v0.7.2

Refactoring improvements based on linting issues

.circleci/config.yml

@@ -0,0 +1,19 @@
+version: 2
+jobs:
+  build:
+    working_directory: ~/build
+    docker:
+      - image: circleci/golang:latest
+    steps:
+      - checkout
+      - setup_remote_docker:
+          version: 17.05.0-ce
+      - run: make image
+      - deploy: 
+          command: |
+            if [[ "$CIRCLE_BRANCH" == "master" ]]; then
+              docker tag ctop quay.io/vektorlab/ctop:latest
+              docker tag ctop quay.io/vektorlab/ctop:$(cat VERSION)
+              docker login -u $DOCKER_USER -p $DOCKER_PASS quay.io
+              docker push quay.io/vektorlab/ctop
+            fi

.gitignore

@@ -1,2 +1,3 @@
 ctop
 .idea
+/vendor/

Dockerfile

@@ -1,3 +1,17 @@
+FROM quay.io/vektorcloud/go:1.11
+
+RUN apk add --no-cache make
+
+WORKDIR /app
+COPY go.mod .
+RUN go mod download
+
+COPY . .
+RUN make build && \
+    mkdir -p /go/bin && \
+    mv -v ctop /go/bin/
+
 FROM scratch
-COPY ./ctop /ctop
+ENV TERM=linux
+COPY --from=0 /go/bin/ctop /ctop
 ENTRYPOINT ["/ctop"]

Dockerfile_build

@@ -1,12 +0,0 @@
-FROM quay.io/vektorcloud/go:1.8
-
-RUN apk add --no-cache make
-
-COPY glide.* /go/src/github.com/bcicen/ctop/
-WORKDIR /go/src/github.com/bcicen/ctop/
-RUN glide install
-
-COPY . /go/src/github.com/bcicen/ctop
-RUN make build && \
-    mkdir -p /go/bin && \
-    mv -v ctop /go/bin/

Makefile

@@ -5,32 +5,32 @@ EXT_LD_FLAGS="-Wl,--allow-multiple-definition"
 LD_FLAGS="-w -X main.version=$(VERSION) -X main.build=$(BUILD) -extldflags=$(EXT_LD_FLAGS)"
 
 clean:
-	rm -rf build/ release/
+	rm -rf _build/ release/
 
 build:
-	glide install
+	go mod download
 	CGO_ENABLED=0 go build -tags release -ldflags $(LD_FLAGS) -o ctop
 
 build-dev:
 	go build -ldflags "-w -X main.version=$(VERSION)-dev -X main.build=$(BUILD) -extldflags=$(EXT_LD_FLAGS)"
 
 build-all:
-	mkdir -p build
+	mkdir -p _build
-	GOOS=darwin GOARCH=amd64 go build -tags release -ldflags $(LD_FLAGS) -o build/ctop-$(VERSION)-darwin-amd64
+	GOOS=darwin  GOARCH=amd64 go build -tags release -ldflags $(LD_FLAGS) -o _build/ctop-$(VERSION)-darwin-amd64
-	GOOS=linux  GOARCH=amd64 go build -tags release -ldflags $(LD_FLAGS) -o build/ctop-$(VERSION)-linux-amd64
+	GOOS=linux   GOARCH=amd64 go build -tags release -ldflags $(LD_FLAGS) -o _build/ctop-$(VERSION)-linux-amd64
-	GOOS=linux  GOARCH=arm   go build -tags release -ldflags $(LD_FLAGS) -o build/ctop-$(VERSION)-linux-arm
+	GOOS=linux   GOARCH=arm   go build -tags release -ldflags $(LD_FLAGS) -o _build/ctop-$(VERSION)-linux-arm
-	GOOS=linux  GOARCH=arm64 go build -tags release -ldflags $(LD_FLAGS) -o build/ctop-$(VERSION)-linux-arm64
+	GOOS=linux   GOARCH=arm64 go build -tags release -ldflags $(LD_FLAGS) -o _build/ctop-$(VERSION)-linux-arm64
+	GOOS=windows GOARCH=amd64 go build -tags release -ldflags $(LD_FLAGS) -o _build/ctop-$(VERSION)-windows-amd64
+	cd _build; sha256sum * > sha256sums.txt
 
 image:
-	docker build -t ctop_build -f Dockerfile_build .
-	docker create --name=ctop_built ctop_build ctop -v
-	docker cp ctop_built:/go/bin/ctop .
 	docker build -t ctop -f Dockerfile .
 
 release:
 	mkdir release
 	go get github.com/progrium/gh-release/...
-	cp build/* release
+	cp _build/* release
+	cd release; sha256sum --quiet --check sha256sums.txt
 	gh-release create bcicen/$(NAME) $(VERSION) \
 		$(shell git rev-parse --abbrev-ref HEAD) $(VERSION)
 

README.md

@@ -9,7 +9,7 @@ Top-like interface for container metrics
 `ctop` provides a concise and condensed overview of real-time metrics for multiple containers:
 <p align="center"><img src="_docs/img/grid.gif" alt="ctop"/></p>
 
-as well as an [expanded view][expanded_view] for inspecting a specific container.
+as well as an [single container view][single_view] for inspecting a specific container.
 
 `ctop` comes with built-in support for Docker and runC; connectors for other container and cluster systems are planned for future releases.
 
@@ -20,7 +20,7 @@ Fetch the [latest release](https://github.com/bcicen/ctop/releases) for your pla
 #### Linux
 
 ```bash
-sudo wget https://github.com/bcicen/ctop/releases/download/v0.6/ctop-0.6-linux-amd64 -O /usr/local/bin/ctop
+sudo wget https://github.com/bcicen/ctop/releases/download/v0.7.2/ctop-0.7.2-linux-amd64 -O /usr/local/bin/ctop
 sudo chmod +x /usr/local/bin/ctop
 ```
 
@@ -31,7 +31,7 @@ brew install ctop
 ```
 or
 ```bash
-sudo curl -Lo /usr/local/bin/ctop https://github.com/bcicen/ctop/releases/download/v0.6/ctop-0.6-darwin-amd64
+sudo curl -Lo /usr/local/bin/ctop https://github.com/bcicen/ctop/releases/download/v0.7.2/ctop-0.7.2-darwin-amd64
 sudo chmod +x /usr/local/bin/ctop
 ```
 
@@ -54,32 +54,41 @@ Build steps can be found [here][build].
 
 `ctop` requires no arguments and uses Docker host variables by default. See [connectors][connectors] for further configuration options.
 
+### Config file
+
+While running, use `S` to save the current filters, sort field, and other options to a default config path. These settings will be loaded and applied the next time `ctop` is started.
+
 ### Options
 
 Option | Description
 --- | ---
 -a	| show active containers only
--f <string> | set an initial filter string
+-f \<string\> | set an initial filter string
 -h	| display help dialog
 -i  | invert default colors
 -r	| reverse container sort order
 -s  | select initial container sort field
+-scale-cpu	| show cpu as % of system total
 -v	| output version information and exit
 
 ### Keybindings
 
 Key | Action
 --- | ---
+\<enter\> | Open container menu
 a | Toggle display of all (running and non-running) containers
 f | Filter displayed containers (`esc` to clear when open)
 H | Toggle ctop header
 h | Open help dialog
 s | Select container sort field
 r | Reverse container sort order
+o | Open single view
+l | View container logs (`t` to toggle timestamp when open)
+S | Save current configuration to file
 q | Quit ctop
 
 [build]: _docs/build.md
 [connectors]: _docs/connectors.md
-[expanded_view]: _docs/expanded.md
+[single_view]: _docs/single.md
 [release]: https://img.shields.io/github/release/bcicen/ctop.svg "ctop"
 [homebrew]: https://img.shields.io/homebrew/v/ctop.svg "ctop"

VERSION

@@ -1 +1 @@
-0.6.0
+0.7.2

_docs/build.md

@@ -1,6 +1,6 @@
 # Build
 
-To build `ctop` from source, ensure you have a recent version of [glide](https://github.com/Masterminds/glide) installed and run:
+To build `ctop` from source, ensure you have [dep](https://github.com/golang/dep) installed and run:
 
 ```bash
 go get github.com/bcicen/ctop && \

_docs/connectors.md

@@ -16,11 +16,11 @@ DOCKER_HOST | Daemon socket to connect to (default: `unix://var/run/docker.sock`
 
 ## RunC
 
-Using this connector requires full privileges to the local runC root dir (default: `/run/runc`)
+Using this connector requires full privileges to the local runC root dir of container state (default: `/run/runc`)
 
 #### Options
 
 Var | Description
 --- | ---
-RUNC_ROOT | path to runc root (default: `/run/runc`)
+RUNC_ROOT | path to runc root for container state (default: `/run/runc`)
 RUNC_SYSTEMD_CGROUP | if set, enable systemd cgroups

_docs/expanded.md

@@ -1,4 +0,0 @@
-# Expanded View
-
-ctop provides an expanded, rolling view for following container metrics
-<p align="center"><img width="80%" src="img/expanded.gif" alt="ctop"/></p>

_docs/single.md

@@ -0,0 +1,4 @@
+# Single Container View
+
+ctop provides a rolling, single container view for following metrics
+<p align="center"><img width="80%" src="img/single.gif" alt="ctop"/></p>

circle.yml

@@ -1,23 +0,0 @@
-machine:
-  services:
-    - docker
-  environment:
-    IMAGE_NAME: quay.io/vektorlab/ctop
-
-dependencies:
-  override:
-    - docker info
-    - make image
-
-test:
-  override:
-    - docker run -ti ctop -v
-
-deployment:
-  hub:
-    branch: master
-    commands:
-      - docker tag ctop ${IMAGE_NAME}:latest
-      - docker tag ctop ${IMAGE_NAME}:$(cat VERSION)
-      - docker login -e $DOCKER_EMAIL -u $DOCKER_USER -p $DOCKER_PASS quay.io
-      - docker push ${IMAGE_NAME}

colors.go

@@ -45,11 +45,14 @@ var ColorMap = map[string]ui.Attribute{
 	"par.text.hi":        ui.ColorBlack,
 	"sparkline.line.fg":  ui.ColorGreen,
 	"sparkline.title.fg": ui.ColorWhite,
+	"status.ok":          ui.ColorGreen,
+	"status.warn":        ui.ColorYellow,
+	"status.danger":      ui.ColorRed,
 }
 
 func InvertColorMap() {
 	re := regexp.MustCompile(".*.fg")
-	for k, _ := range ColorMap {
+	for k := range ColorMap {
 		if re.FindAllString(k, 1) != nil {
 			ColorMap[k] = ui.ColorBlack
 		}

config/file.go

@@ -0,0 +1,119 @@
+package config
+
+import (
+	"fmt"
+	"os"
+	"regexp"
+	"strings"
+
+	"github.com/BurntSushi/toml"
+)
+
+var (
+	xdgRe = regexp.MustCompile("^XDG_*")
+)
+
+type File struct {
+	Options map[string]string `toml:"options"`
+	Toggles map[string]bool   `toml:"toggles"`
+}
+
+func exportConfig() File {
+	c := File{
+		Options: make(map[string]string),
+		Toggles: make(map[string]bool),
+	}
+	for _, p := range GlobalParams {
+		c.Options[p.Key] = p.Val
+	}
+	for _, sw := range GlobalSwitches {
+		c.Toggles[sw.Key] = sw.Val
+	}
+	return c
+}
+
+func Read() error {
+	var config File
+
+	path, err := getConfigPath()
+	if err != nil {
+		return err
+	}
+
+	if _, err := toml.DecodeFile(path, &config); err != nil {
+		return err
+	}
+
+	for k, v := range config.Options {
+		Update(k, v)
+	}
+	for k, v := range config.Toggles {
+		UpdateSwitch(k, v)
+	}
+	return nil
+}
+
+func Write() (path string, err error) {
+	path, err = getConfigPath()
+	if err != nil {
+		return path, err
+	}
+
+	cfgdir := basedir(path)
+	// create config dir if not exist
+	if _, err := os.Stat(cfgdir); err != nil {
+		err = os.MkdirAll(cfgdir, 0755)
+		if err != nil {
+			return path, fmt.Errorf("failed to create config dir [%s]: %s", cfgdir, err)
+		}
+	}
+
+	file, err := os.OpenFile(path, os.O_RDWR|os.O_CREATE, 0644)
+	if err != nil {
+		return path, fmt.Errorf("failed to open config for writing: %s", err)
+	}
+
+	writer := toml.NewEncoder(file)
+	err = writer.Encode(exportConfig())
+	if err != nil {
+		return path, fmt.Errorf("failed to write config: %s", err)
+	}
+
+	return path, nil
+}
+
+// determine config path from environment
+func getConfigPath() (path string, err error) {
+	homeDir, ok := os.LookupEnv("HOME")
+	if !ok {
+		return path, fmt.Errorf("$HOME not set")
+	}
+
+	// use xdg config home if possible
+	if xdgSupport() {
+		xdgHome, ok := os.LookupEnv("XDG_CONFIG_HOME")
+		if !ok {
+			xdgHome = fmt.Sprintf("%s/.config", homeDir)
+		}
+		path = fmt.Sprintf("%s/ctop/config", xdgHome)
+	} else {
+		path = fmt.Sprintf("%s/.ctop", homeDir)
+	}
+
+	return path, nil
+}
+
+// test for environemnt supporting XDG spec
+func xdgSupport() bool {
+	for _, e := range os.Environ() {
+		if xdgRe.FindAllString(e, 1) != nil {
+			return true
+		}
+	}
+	return false
+}
+
+func basedir(path string) string {
+	parts := strings.Split(path, "/")
+	return strings.Join((parts[0 : len(parts)-1]), "/")
+}

config/switch.go

@@ -5,17 +5,27 @@ var switches = []*Switch{
 	&Switch{
 		Key:   "sortReversed",
 		Val:   false,
-		Label: "Reverse Sort Order",
+		Label: "Reverse sort order",
 	},
 	&Switch{
 		Key:   "allContainers",
 		Val:   true,
-		Label: "Show All Containers",
+		Label: "Show all containers",
+	},
+	&Switch{
+		Key:   "fullRowCursor",
+		Val:   true,
+		Label: "Highlight entire cursor row (vs. name only)",
 	},
 	&Switch{
 		Key:   "enableHeader",
 		Val:   true,
-		Label: "Enable Status Header",
+		Label: "Enable status header",
+	},
+	&Switch{
+		Key:   "scaleCpu",
+		Val:   false,
+		Label: "Show CPU as %% of system total",
 	},
 }
 
@@ -40,10 +50,18 @@ func GetSwitchVal(k string) bool {
 	return GetSwitch(k).Val
 }
 
+func UpdateSwitch(k string, val bool) {
+	sw := GetSwitch(k)
+	if sw.Val != val {
+		log.Noticef("config change: %s: %t -> %t", k, sw.Val, val)
+		sw.Val = val
+	}
+}
+
 // Toggle a boolean switch
 func Toggle(k string) {
 	sw := GetSwitch(k)
-	newVal := sw.Val != true
+	newVal := !sw.Val
 	log.Noticef("config change: %s: %t -> %t", k, sw.Val, newVal)
 	sw.Val = newVal
 	//log.Errorf("ignoring toggle for non-existant switch: %s", k)

connector/collector/docker.go

@@ -1,33 +1,36 @@
 package collector
 
 import (
-	"github.com/bcicen/ctop/metrics"
+	"github.com/bcicen/ctop/config"
+	"github.com/bcicen/ctop/models"
 	api "github.com/fsouza/go-dockerclient"
 )
 
 // Docker collector
 type Docker struct {
-	metrics.Metrics
+	models.Metrics
 	id         string
 	client     *api.Client
 	running    bool
-	stream     chan metrics.Metrics
+	stream     chan models.Metrics
 	done       chan bool
 	lastCpu    float64
 	lastSysCpu float64
+	scaleCpu   bool
 }
 
 func NewDocker(client *api.Client, id string) *Docker {
 	return &Docker{
-		Metrics: metrics.Metrics{},
+		Metrics:  models.Metrics{},
 		id:       id,
 		client:   client,
+		scaleCpu: config.GetSwitchVal("scaleCpu"),
 	}
 }
 
 func (c *Docker) Start() {
 	c.done = make(chan bool)
-	c.stream = make(chan metrics.Metrics)
+	c.stream = make(chan models.Metrics)
 	stats := make(chan *api.Stats)
 
 	go func() {
@@ -61,10 +64,14 @@ func (c *Docker) Running() bool {
 	return c.running
 }
 
-func (c *Docker) Stream() chan metrics.Metrics {
+func (c *Docker) Stream() chan models.Metrics {
 	return c.stream
 }
 
+func (c *Docker) Logs() LogCollector {
+	return NewDockerLogs(c.id, c.client)
+}
+
 // Stop collector
 func (c *Docker) Stop() {
 	c.done <- true
@@ -78,14 +85,18 @@ func (c *Docker) ReadCPU(stats *api.Stats) {
 	cpudiff := total - c.lastCpu
 	syscpudiff := system - c.lastSysCpu
 
+	if c.scaleCpu {
+		c.CPUUtil = round((cpudiff / syscpudiff * 100))
+	} else {
 		c.CPUUtil = round((cpudiff / syscpudiff * 100) * ncpus)
+	}
 	c.lastCpu = total
 	c.lastSysCpu = system
 	c.Pids = int(stats.PidsStats.Current)
 }
 
 func (c *Docker) ReadMem(stats *api.Stats) {
-	c.MemUsage = int64(stats.MemoryStats.Usage)
+	c.MemUsage = int64(stats.MemoryStats.Usage - stats.MemoryStats.Stats.Cache)
 	c.MemLimit = int64(stats.MemoryStats.Limit)
 	c.MemPercent = percent(float64(c.MemUsage), float64(c.MemLimit))
 }

connector/collector/docker_logs.go

@@ -0,0 +1,82 @@
+package collector
+
+import (
+	"bufio"
+	"context"
+	"io"
+	"strings"
+	"time"
+
+	"github.com/bcicen/ctop/models"
+	api "github.com/fsouza/go-dockerclient"
+)
+
+type DockerLogs struct {
+	id     string
+	client *api.Client
+	done   chan bool
+}
+
+func NewDockerLogs(id string, client *api.Client) *DockerLogs {
+	return &DockerLogs{
+		id:     id,
+		client: client,
+		done:   make(chan bool),
+	}
+}
+
+func (l *DockerLogs) Stream() chan models.Log {
+	r, w := io.Pipe()
+	logCh := make(chan models.Log)
+	ctx, cancel := context.WithCancel(context.Background())
+
+	opts := api.LogsOptions{
+		Context:      ctx,
+		Container:    l.id,
+		OutputStream: w,
+		ErrorStream:  w,
+		Stdout:       true,
+		Stderr:       true,
+		Tail:         "10",
+		Follow:       true,
+		Timestamps:   true,
+	}
+
+	// read io pipe into channel
+	go func() {
+		scanner := bufio.NewScanner(r)
+		for scanner.Scan() {
+			parts := strings.Split(scanner.Text(), " ")
+			ts := l.parseTime(parts[0])
+			logCh <- models.Log{Timestamp: ts, Message: strings.Join(parts[1:], " ")}
+		}
+	}()
+
+	// connect to container log stream
+	go func() {
+		err := l.client.Logs(opts)
+		if err != nil {
+			log.Errorf("error reading container logs: %s", err)
+		}
+		log.Infof("log reader stopped for container: %s", l.id)
+	}()
+
+	go func() {
+		<-l.done
+		cancel()
+	}()
+
+	log.Infof("log reader started for container: %s", l.id)
+	return logCh
+}
+
+func (l *DockerLogs) Stop() { l.done <- true }
+
+func (l *DockerLogs) parseTime(s string) time.Time {
+	ts, err := time.Parse("2006-01-02T15:04:05.000000000Z", s)
+	if err != nil {
+		log.Errorf("failed to parse container log: %s", err)
+		ts = time.Now()
+	}
+	return ts
+}

connector/collector/main.go

@@ -4,10 +4,24 @@ import (
 	"math"
 
 	"github.com/bcicen/ctop/logging"
+	"github.com/bcicen/ctop/models"
 )
 
 var log = logging.Init()
 
+type LogCollector interface {
+	Stream() chan models.Log
+	Stop()
+}
+
+type Collector interface {
+	Stream() chan models.Metrics
+	Logs() LogCollector
+	Running() bool
+	Start()
+	Stop()
+}
+
 func round(num float64) int {
 	return int(num + math.Copysign(0.5, num))
 }

connector/collector/mock.go

@@ -6,13 +6,13 @@ import (
 	"math/rand"
 	"time"
 
-	"github.com/bcicen/ctop/metrics"
+	"github.com/bcicen/ctop/models"
 )
 
 // Mock collector
 type Mock struct {
-	metrics.Metrics
+	models.Metrics
-	stream     chan metrics.Metrics
+	stream     chan models.Metrics
 	done       bool
 	running    bool
 	aggression int64
@@ -20,7 +20,7 @@ type Mock struct {
 
 func NewMock(a int64) *Mock {
 	c := &Mock{
-		Metrics:    metrics.Metrics{},
+		Metrics:    models.Metrics{},
 		aggression: a,
 	}
 	c.MemLimit = 2147483648
@@ -33,7 +33,7 @@ func (c *Mock) Running() bool {
 
 func (c *Mock) Start() {
 	c.done = false
-	c.stream = make(chan metrics.Metrics)
+	c.stream = make(chan models.Metrics)
 	go c.run()
 }
 
@@ -41,10 +41,14 @@ func (c *Mock) Stop() {
 	c.done = true
 }
 
-func (c *Mock) Stream() chan metrics.Metrics {
+func (c *Mock) Stream() chan models.Metrics {
 	return c.stream
 }
 
+func (c *Mock) Logs() LogCollector {
+	return &MockLogs{make(chan bool)}
+}
+
 func (c *Mock) run() {
 	c.running = true
 	rand.Seed(int64(time.Now().Nanosecond()))

connector/collector/mock_logs.go

@@ -0,0 +1,31 @@
+package collector
+
+import (
+	"time"
+
+	"github.com/bcicen/ctop/models"
+)
+
+const mockLog = "Cura ob pro qui tibi inveni dum qua fit donec amare illic mea, regem falli contexo pro peregrinorum heremo absconditi araneae meminerim deliciosas actionibus facere modico dura sonuerunt psalmi contra rerum, tempus mala anima volebant dura quae o modis."
+
+type MockLogs struct {
+	done chan bool
+}
+
+func (l *MockLogs) Stream() chan models.Log {
+	logCh := make(chan models.Log)
+	go func() {
+		for {
+			select {
+			case <-l.done:
+				break
+			default:
+				logCh <- models.Log{Timestamp: time.Now(), Message: mockLog}
+				time.Sleep(250 * time.Millisecond)
+			}
+		}
+	}()
+	return logCh
+}
+
+func (l *MockLogs) Stop() { l.done <- true }

connector/collector/proc.go

@@ -1,4 +1,4 @@
-// +build !darwin
+// +build linux
 
 package collector
 

connector/collector/runc.go

@@ -1,34 +1,37 @@
-// +build !darwin
+// +build linux
 
 package collector
 
 import (
 	"time"
 
-	"github.com/bcicen/ctop/metrics"
+	"github.com/bcicen/ctop/config"
+	"github.com/bcicen/ctop/models"
 	"github.com/opencontainers/runc/libcontainer"
 	"github.com/opencontainers/runc/libcontainer/cgroups"
 )
 
 // Runc collector
 type Runc struct {
-	metrics.Metrics
+	models.Metrics
 	id         string
 	libc       libcontainer.Container
-	stream     chan metrics.Metrics
+	stream     chan models.Metrics
 	done       bool
 	running    bool
 	interval   int // collection interval, in seconds
 	lastCpu    float64
 	lastSysCpu float64
+	scaleCpu   bool
 }
 
 func NewRunc(libc libcontainer.Container) *Runc {
 	c := &Runc{
-		Metrics:  metrics.Metrics{},
+		Metrics:  models.Metrics{},
 		id:       libc.ID(),
 		libc:     libc,
 		interval: 1,
+		scaleCpu: config.GetSwitchVal("scaleCpu"),
 	}
 	return c
 }
@@ -39,7 +42,7 @@ func (c *Runc) Running() bool {
 
 func (c *Runc) Start() {
 	c.done = false
-	c.stream = make(chan metrics.Metrics)
+	c.stream = make(chan models.Metrics)
 	go c.run()
 }
 
@@ -47,10 +50,14 @@ func (c *Runc) Stop() {
 	c.done = true
 }
 
-func (c *Runc) Stream() chan metrics.Metrics {
+func (c *Runc) Stream() chan models.Metrics {
 	return c.stream
 }
 
+func (c *Runc) Logs() LogCollector {
+	return nil
+}
+
 func (c *Runc) run() {
 	c.running = true
 	defer close(c.stream)
@@ -86,7 +93,11 @@ func (c *Runc) ReadCPU(stats *cgroups.Stats) {
 	cpudiff := total - c.lastCpu
 	syscpudiff := system - c.lastSysCpu
 
+	if c.scaleCpu {
+		c.CPUUtil = round((cpudiff / syscpudiff * 100))
+	} else {
 		c.CPUUtil = round((cpudiff / syscpudiff * 100) * ncpus)
+	}
 	c.lastCpu = total
 	c.lastSysCpu = system
 	c.Pids = int(stats.PidsStats.Current)

connector/docker.go

@@ -6,10 +6,13 @@ import (
 	"sync"
 
 	"github.com/bcicen/ctop/connector/collector"
+	"github.com/bcicen/ctop/connector/manager"
 	"github.com/bcicen/ctop/container"
 	api "github.com/fsouza/go-dockerclient"
 )
 
+func init() { enabled["docker"] = NewDocker }
+
 type Docker struct {
 	client       *api.Client
 	containers   map[string]*container.Container
@@ -45,8 +48,11 @@ func (cm *Docker) watchEvents() {
 		if e.Type != "container" {
 			continue
 		}
-		switch e.Action {
+
-		case "start", "die", "pause", "unpause":
+		actionName := strings.Split(e.Action, ":")[0]
+
+		switch actionName {
+		case "start", "die", "pause", "unpause", "health_status":
 			log.Debugf("handling docker event: action=%s id=%s", e.Action, e.ID)
 			cm.needsRefresh <- e.ID
 		case "destroy":
@@ -66,7 +72,7 @@ func portsFormat(ports map[api.Port][]api.PortBinding) string {
 			continue
 		}
 		for _, binding := range v {
-			s := fmt.Sprintf("%s -> %s:%s", k, binding.HostIP, binding.HostPort)
+			s := fmt.Sprintf("%s:%s -> %s", binding.HostIP, binding.HostPort, k)
 			published = append(published, s)
 		}
 	}
@@ -74,6 +80,17 @@ func portsFormat(ports map[api.Port][]api.PortBinding) string {
 	return strings.Join(append(exposed, published...), "\n")
 }
 
+func ipsFormat(networks map[string]api.ContainerNetwork) string {
+	var ips []string
+
+	for k, v := range networks {
+		s := fmt.Sprintf("%s:%s", k, v.IPAddress)
+		ips = append(ips, s)
+	}
+
+	return strings.Join(ips, "\n")
+}
+
 func (cm *Docker) refresh(c *container.Container) {
 	insp := cm.inspect(c.Id)
 	// remove container if no longer exists
@@ -83,15 +100,20 @@ func (cm *Docker) refresh(c *container.Container) {
 	}
 	c.SetMeta("name", shortName(insp.Name))
 	c.SetMeta("image", insp.Config.Image)
+	c.SetMeta("IPs", ipsFormat(insp.NetworkSettings.Networks))
 	c.SetMeta("ports", portsFormat(insp.NetworkSettings.Ports))
 	c.SetMeta("created", insp.Created.Format("Mon Jan 2 15:04:05 2006"))
+	c.SetMeta("health", insp.State.Health.Status)
+	for _, env := range insp.Config.Env {
+		c.SetMeta("[ENV-VAR]", env)
+	}
 	c.SetState(insp.State.Status)
 }
 
 func (cm *Docker) inspect(id string) *api.Container {
 	c, err := cm.client.InspectContainer(id)
 	if err != nil {
-		if _, ok := err.(*api.NoSuchContainer); ok == false {
+		if _, ok := err.(*api.NoSuchContainer); !ok {
 			log.Errorf(err.Error())
 		}
 	}
@@ -128,8 +150,10 @@ func (cm *Docker) MustGet(id string) *container.Container {
 	if !ok {
 		// create collector
 		collector := collector.NewDocker(cm.client, id)
+		// create manager
+		manager := manager.NewDocker(cm.client, id)
 		// create container
-		c = container.New(id, collector)
+		c = container.New(id, collector, manager)
 		cm.lock.Lock()
 		cm.containers[id] = c
 		cm.lock.Unlock()
@@ -159,6 +183,7 @@ func (cm *Docker) All() (containers container.Containers) {
 	for _, c := range cm.containers {
 		containers = append(containers, c)
 	}
+
 	containers.Sort()
 	containers.Filter()
 	cm.lock.Unlock()

connector/enabled_darwin.go

@@ -1,7 +0,0 @@
-// +build !linux
-
-package connector
-
-var enabled = map[string]func() Connector{
-	"docker": NewDocker,
-}

connector/enabled_linux.go

@@ -1,8 +0,0 @@
-// +build !darwin
-
-package connector
-
-var enabled = map[string]func() Connector{
-	"docker": NewDocker,
-	"runc":   NewRunc,
-}

connector/main.go

@@ -2,22 +2,31 @@ package connector
 
 import (
 	"fmt"
+	"sort"
 
 	"github.com/bcicen/ctop/container"
 	"github.com/bcicen/ctop/logging"
 )
 
-var log = logging.Init()
+var (
+	log     = logging.Init()
+	enabled = make(map[string]func() Connector)
+)
+
+// return names for all enabled connectors on the current platform
+func Enabled() (a []string) {
+	for k, _ := range enabled {
+		a = append(a, k)
+	}
+	sort.Strings(a)
+	return a
+}
 
 func ByName(s string) (Connector, error) {
-	if _, ok := enabled[s]; !ok {
+	if cfn, ok := enabled[s]; ok {
-		msg := fmt.Sprintf("invalid connector type \"%s\"\nconnector must be one of:", s)
+		return cfn(), nil
-		for k, _ := range enabled {
-			msg += fmt.Sprintf("\n  %s", k)
 	}
-		return nil, fmt.Errorf(msg)
+	return nil, fmt.Errorf("invalid connector type \"%s\"", s)
-	}
-	return enabled[s](), nil
 }
 
 type Connector interface {

connector/manager/docker.go

@@ -0,0 +1,65 @@
+package manager
+
+import (
+	"fmt"
+	api "github.com/fsouza/go-dockerclient"
+)
+
+type Docker struct {
+	id     string
+	client *api.Client
+}
+
+func NewDocker(client *api.Client, id string) *Docker {
+	return &Docker{
+		id:     id,
+		client: client,
+	}
+}
+
+func (dc *Docker) Start() error {
+	c, err := dc.client.InspectContainer(dc.id)
+	if err != nil {
+		return fmt.Errorf("cannot inspect container: %v", err)
+	}
+
+	if err := dc.client.StartContainer(c.ID, c.HostConfig); err != nil {
+		return fmt.Errorf("cannot start container: %v", err)
+	}
+	return nil
+}
+
+func (dc *Docker) Stop() error {
+	if err := dc.client.StopContainer(dc.id, 3); err != nil {
+		return fmt.Errorf("cannot stop container: %v", err)
+	}
+	return nil
+}
+
+func (dc *Docker) Remove() error {
+	if err := dc.client.RemoveContainer(api.RemoveContainerOptions{ID: dc.id}); err != nil {
+		return fmt.Errorf("cannot remove container: %v", err)
+	}
+	return nil
+}
+
+func (dc *Docker) Pause() error {
+	if err := dc.client.PauseContainer(dc.id); err != nil {
+		return fmt.Errorf("cannot pause container: %v", err)
+	}
+	return nil
+}
+
+func (dc *Docker) Unpause() error {
+	if err := dc.client.UnpauseContainer(dc.id); err != nil {
+		return fmt.Errorf("cannot unpause container: %v", err)
+	}
+	return nil
+}
+
+func (dc *Docker) Restart() error {
+	if err := dc.client.RestartContainer(dc.id, 3); err != nil {
+		return fmt.Errorf("cannot restart container: %v", err)
+	}
+	return nil
+}

connector/manager/main.go

@@ -0,0 +1,10 @@
+package manager
+
+type Manager interface {
+	Start() error
+	Stop() error
+	Remove() error
+	Pause() error
+	Unpause() error
+	Restart() error
+}

connector/manager/mock.go

@@ -0,0 +1,31 @@
+package manager
+
+type Mock struct{}
+
+func NewMock() *Mock {
+	return &Mock{}
+}
+
+func (m *Mock) Start() error {
+	return nil
+}
+
+func (m *Mock) Stop() error {
+	return nil
+}
+
+func (m *Mock) Remove() error {
+	return nil
+}
+
+func (m *Mock) Pause() error {
+	return nil
+}
+
+func (m *Mock) Unpause() error {
+	return nil
+}
+
+func (m *Mock) Restart() error {
+	return nil
+}

connector/manager/runc.go

@@ -0,0 +1,31 @@
+package manager
+
+type Runc struct{}
+
+func NewRunc() *Runc {
+	return &Runc{}
+}
+
+func (rc *Runc) Start() error {
+	return nil
+}
+
+func (rc *Runc) Stop() error {
+	return nil
+}
+
+func (rc *Runc) Remove() error {
+	return nil
+}
+
+func (rc *Runc) Pause() error {
+	return nil
+}
+
+func (rc *Runc) Unpause() error {
+	return nil
+}
+
+func (rc *Runc) Restart() error {
+	return nil
+}

connector/mock.go

@@ -8,16 +8,19 @@ import (
 	"time"
 
 	"github.com/bcicen/ctop/connector/collector"
+	"github.com/bcicen/ctop/connector/manager"
 	"github.com/bcicen/ctop/container"
 	"github.com/jgautheron/codename-generator"
 	"github.com/nu7hatch/gouuid"
 )
 
+func init() { enabled["mock"] = NewMock }
+
 type Mock struct {
 	containers container.Containers
 }
 
-func NewMock() *Mock {
+func NewMock() Connector {
 	cs := &Mock{}
 	go cs.Init()
 	go cs.Loop()
@@ -40,7 +43,8 @@ func (cs *Mock) Init() {
 
 func (cs *Mock) makeContainer(aggression int64) {
 	collector := collector.NewMock(aggression)
-	c := container.New(makeID(), collector)
+	manager := manager.NewMock()
+	c := container.New(makeID(), collector, manager)
 	c.SetMeta("name", makeName())
 	c.SetState(makeState())
 	cs.containers = append(cs.containers, c)

connector/runc.go

@@ -1,4 +1,4 @@
-// +build !darwin
+// +build linux
 
 package connector
 
@@ -11,11 +11,14 @@ import (
 	"time"
 
 	"github.com/bcicen/ctop/connector/collector"
+	"github.com/bcicen/ctop/connector/manager"
 	"github.com/bcicen/ctop/container"
 	"github.com/opencontainers/runc/libcontainer"
 	"github.com/opencontainers/runc/libcontainer/cgroups/systemd"
 )
 
+func init() { enabled["runc"] = NewRunc }
+
 type RuncOpts struct {
 	root           string // runc root path
 	systemdCgroups bool   // use systemd cgroups
@@ -175,7 +178,8 @@ func (cm *Runc) MustGet(id string) *container.Container {
 		collector := collector.NewRunc(libc)
 
 		// create container
-		c = container.New(id, collector)
+		manager := manager.NewRunc()
+		c = container.New(id, collector, manager)
 
 		name := libc.ID()
 		// set initial metadata

container/container.go

@@ -1,81 +0,0 @@
-package container
-
-import (
-	"github.com/bcicen/ctop/cwidgets"
-	"github.com/bcicen/ctop/cwidgets/compact"
-	"github.com/bcicen/ctop/logging"
-	"github.com/bcicen/ctop/metrics"
-)
-
-var (
-	log = logging.Init()
-)
-
-// Metrics and metadata representing a container
-type Container struct {
-	metrics.Metrics
-	Id        string
-	Meta      map[string]string
-	Widgets   *compact.Compact
-	Display   bool // display this container in compact view
-	updater   cwidgets.WidgetUpdater
-	collector metrics.Collector
-}
-
-func New(id string, collector metrics.Collector) *Container {
-	widgets := compact.NewCompact(id)
-	return &Container{
-		Metrics:   metrics.NewMetrics(),
-		Id:        id,
-		Meta:      make(map[string]string),
-		Widgets:   widgets,
-		updater:   widgets,
-		collector: collector,
-	}
-}
-
-func (c *Container) SetUpdater(u cwidgets.WidgetUpdater) {
-	c.updater = u
-	for k, v := range c.Meta {
-		c.updater.SetMeta(k, v)
-	}
-}
-
-func (c *Container) SetMeta(k, v string) {
-	c.Meta[k] = v
-	c.updater.SetMeta(k, v)
-}
-
-func (c *Container) GetMeta(k string) string {
-	if v, ok := c.Meta[k]; ok {
-		return v
-	}
-	return ""
-}
-
-func (c *Container) SetState(s string) {
-	c.SetMeta("state", s)
-	// start collector, if needed
-	if s == "running" && !c.collector.Running() {
-		c.collector.Start()
-		c.Read(c.collector.Stream())
-	}
-	// stop collector, if needed
-	if s != "running" && c.collector.Running() {
-		c.collector.Stop()
-	}
-}
-
-// Read metric stream, updating widgets
-func (c *Container) Read(stream chan metrics.Metrics) {
-	go func() {
-		for metrics := range stream {
-			c.Metrics = metrics
-			c.updater.SetMetrics(metrics)
-		}
-		log.Infof("reader stopped for container: %s", c.Id)
-		c.Metrics = metrics.NewMetrics()
-		c.Widgets.Reset()
-	}()
-	log.Infof("reader started for container: %s", c.Id)
-}

container/main.go

@@ -0,0 +1,155 @@
+package container
+
+import (
+	"github.com/bcicen/ctop/connector/collector"
+	"github.com/bcicen/ctop/connector/manager"
+	"github.com/bcicen/ctop/cwidgets"
+	"github.com/bcicen/ctop/cwidgets/compact"
+	"github.com/bcicen/ctop/logging"
+	"github.com/bcicen/ctop/models"
+)
+
+var (
+	log = logging.Init()
+)
+
+const (
+	running = "running"
+)
+
+// Metrics and metadata representing a container
+type Container struct {
+	models.Metrics
+	Id        string
+	Meta      map[string]string
+	Widgets   *compact.Compact
+	Display   bool // display this container in compact view
+	updater   cwidgets.WidgetUpdater
+	collector collector.Collector
+	manager   manager.Manager
+}
+
+func New(id string, collector collector.Collector, manager manager.Manager) *Container {
+	widgets := compact.NewCompact(id)
+	return &Container{
+		Metrics:   models.NewMetrics(),
+		Id:        id,
+		Meta:      make(map[string]string),
+		Widgets:   widgets,
+		updater:   widgets,
+		collector: collector,
+		manager:   manager,
+	}
+}
+
+func (c *Container) SetUpdater(u cwidgets.WidgetUpdater) {
+	c.updater = u
+	for k, v := range c.Meta {
+		c.updater.SetMeta(k, v)
+	}
+}
+
+func (c *Container) SetMeta(k, v string) {
+	c.Meta[k] = v
+	c.updater.SetMeta(k, v)
+}
+
+func (c *Container) GetMeta(k string) string {
+	if v, ok := c.Meta[k]; ok {
+		return v
+	}
+	return ""
+}
+
+func (c *Container) SetState(s string) {
+	c.SetMeta("state", s)
+	// start collector, if needed
+	if s == running && !c.collector.Running() {
+		c.collector.Start()
+		c.Read(c.collector.Stream())
+	}
+	// stop collector, if needed
+	if s != running && c.collector.Running() {
+		c.collector.Stop()
+	}
+}
+
+// Return container log collector
+func (c *Container) Logs() collector.LogCollector {
+	return c.collector.Logs()
+}
+
+// Read metric stream, updating widgets
+func (c *Container) Read(stream chan models.Metrics) {
+	go func() {
+		for metrics := range stream {
+			c.Metrics = metrics
+			c.updater.SetMetrics(metrics)
+		}
+		log.Infof("reader stopped for container: %s", c.Id)
+		c.Metrics = models.NewMetrics()
+		c.Widgets.Reset()
+	}()
+	log.Infof("reader started for container: %s", c.Id)
+}
+
+func (c *Container) Start() {
+	if c.Meta["state"] != running {
+		if err := c.manager.Start(); err != nil {
+			log.Warningf("container %s: %v", c.Id, err)
+			log.StatusErr(err)
+			return
+		}
+		c.SetState(running)
+	}
+}
+
+func (c *Container) Stop() {
+	if c.Meta["state"] == running {
+		if err := c.manager.Stop(); err != nil {
+			log.Warningf("container %s: %v", c.Id, err)
+			log.StatusErr(err)
+			return
+		}
+		c.SetState("exited")
+	}
+}
+
+func (c *Container) Remove() {
+	if err := c.manager.Remove(); err != nil {
+		log.Warningf("container %s: %v", c.Id, err)
+		log.StatusErr(err)
+	}
+}
+
+func (c *Container) Pause() {
+	if c.Meta["state"] == running {
+		if err := c.manager.Pause(); err != nil {
+			log.Warningf("container %s: %v", c.Id, err)
+			log.StatusErr(err)
+			return
+		}
+		c.SetState("paused")
+	}
+}
+
+func (c *Container) Unpause() {
+	if c.Meta["state"] == "paused" {
+		if err := c.manager.Unpause(); err != nil {
+			log.Warningf("container %s: %v", c.Id, err)
+			log.StatusErr(err)
+			return
+		}
+		c.SetState(running)
+	}
+}
+
+func (c *Container) Restart() {
+	if c.Meta["state"] == running {
+		if err := c.manager.Restart(); err != nil {
+			log.Warningf("container %s: %v", c.Id, err)
+			log.StatusErr(err)
+			return
+		}
+	}
+}

cursor.go

@@ -57,11 +57,11 @@ func (gc *GridCursor) RefreshContainers() (lenChanged bool) {
 // Set an initial cursor position, if possible
 func (gc *GridCursor) Reset() {
 	for _, c := range gc.cSource.All() {
-		c.Widgets.Name.UnHighlight()
+		c.Widgets.UnHighlight()
 	}
 	if gc.Len() > 0 {
 		gc.selectedID = gc.filtered[0].Id
-		gc.filtered[0].Widgets.Name.Highlight()
+		gc.filtered[0].Widgets.Highlight()
 	}
 }
 
@@ -109,9 +109,9 @@ func (gc *GridCursor) Up() {
 	active := gc.filtered[idx]
 	next := gc.filtered[idx-1]
 
-	active.Widgets.Name.UnHighlight()
+	active.Widgets.UnHighlight()
 	gc.selectedID = next.Id
-	next.Widgets.Name.Highlight()
+	next.Widgets.Highlight()
 
 	gc.ScrollPage()
 	ui.Render(cGrid)
@@ -128,9 +128,9 @@ func (gc *GridCursor) Down() {
 	active := gc.filtered[idx]
 	next := gc.filtered[idx+1]
 
-	active.Widgets.Name.UnHighlight()
+	active.Widgets.UnHighlight()
 	gc.selectedID = next.Id
-	next.Widgets.Name.Highlight()
+	next.Widgets.Highlight()
 
 	gc.ScrollPage()
 	ui.Render(cGrid)
@@ -142,17 +142,18 @@ func (gc *GridCursor) PgUp() {
 		return
 	}
 
-	var nextidx int
+	nextidx := int(math.Max(0.0, float64(idx-cGrid.MaxRows())))
-	nextidx = int(math.Max(0.0, float64(idx-cGrid.MaxRows())))
+	if gc.pgCount() > 0 {
 		cGrid.Offset = int(math.Max(float64(cGrid.Offset-cGrid.MaxRows()),
 			float64(0)))
+	}
 
 	active := gc.filtered[idx]
 	next := gc.filtered[nextidx]
 
-	active.Widgets.Name.UnHighlight()
+	active.Widgets.UnHighlight()
 	gc.selectedID = next.Id
-	next.Widgets.Name.Highlight()
+	next.Widgets.Highlight()
 
 	cGrid.Align()
 	ui.Render(cGrid)
@@ -164,19 +165,28 @@ func (gc *GridCursor) PgDown() {
 		return
 	}
 
-	var nextidx int
+	nextidx := int(math.Min(float64(gc.Len()-1), float64(idx+cGrid.MaxRows())))
-	nextidx = int(math.Min(float64(gc.Len()-1),
+	if gc.pgCount() > 0 {
-		float64(idx+cGrid.MaxRows())))
 		cGrid.Offset = int(math.Min(float64(cGrid.Offset+cGrid.MaxRows()),
 			float64(gc.Len()-cGrid.MaxRows())))
+	}
 
 	active := gc.filtered[idx]
 	next := gc.filtered[nextidx]
 
-	active.Widgets.Name.UnHighlight()
+	active.Widgets.UnHighlight()
 	gc.selectedID = next.Id
-	next.Widgets.Name.Highlight()
+	next.Widgets.Highlight()
 
 	cGrid.Align()
 	ui.Render(cGrid)
 }
+
+// number of pages at current row count and term height
+func (gc *GridCursor) pgCount() int {
+	pages := gc.Len() / cGrid.MaxRows()
+	if gc.Len()%cGrid.MaxRows() > 0 {
+		pages++
+	}
+	return pages
+}

cwidgets/compact/gauge.go

@@ -23,12 +23,22 @@ func (w *GaugeCol) Reset() {
 	w.Percent = 0
 }
 
+func (w *GaugeCol) Highlight() {
+	w.Bg = ui.ThemeAttr("par.text.fg")
+	w.PercentColor = ui.ThemeAttr("par.text.hi")
+}
+
+func (w *GaugeCol) UnHighlight() {
+	w.Bg = ui.ThemeAttr("par.text.bg")
+	w.PercentColor = ui.ThemeAttr("par.text.bg")
+}
+
 func colorScale(n int) ui.Attribute {
 	if n > 70 {
-		return ui.ColorRed
+		return ui.ThemeAttr("status.danger")
 	}
 	if n > 30 {
-		return ui.ColorYellow
+		return ui.ThemeAttr("status.warn")
 	}
-	return ui.ColorGreen
+	return ui.ThemeAttr("status.ok")
 }

cwidgets/compact/grid.go

@@ -22,9 +22,11 @@ func NewCompactGrid() *CompactGrid {
 
 func (cg *CompactGrid) Align() {
 	y := cg.Y
-	if cg.Offset >= len(cg.Rows) {
+
+	if cg.Offset >= len(cg.Rows) || cg.Offset < 0 {
 		cg.Offset = 0
 	}
+
 	// update row ypos, width recursively
 	for _, r := range cg.pageRows() {
 		r.SetY(y)
@@ -55,7 +57,5 @@ func (cg *CompactGrid) Buffer() ui.Buffer {
 }
 
 func (cg *CompactGrid) AddRows(rows ...ui.GridBufferer) {
-	for _, r := range rows {
+	cg.Rows = append(cg.Rows, rows...)
-		cg.Rows = append(cg.Rows, r)
-	}
 }

cwidgets/compact/main.go

@@ -1,8 +1,9 @@
 package compact
 
 import (
+	"github.com/bcicen/ctop/config"
 	"github.com/bcicen/ctop/logging"
-	"github.com/bcicen/ctop/metrics"
+	"github.com/bcicen/ctop/models"
 	ui "github.com/gizak/termui"
 )
 
@@ -13,10 +14,11 @@ type Compact struct {
 	Name   *TextCol
 	Cid    *TextCol
 	Cpu    *GaugeCol
-	Memory *GaugeCol
+	Mem    *GaugeCol
 	Net    *TextCol
 	IO     *TextCol
 	Pids   *TextCol
+	Bg     *RowBg
 	X, Y   int
 	Width  int
 	Height int
@@ -32,10 +34,11 @@ func NewCompact(id string) *Compact {
 		Name:   NewTextCol("-"),
 		Cid:    NewTextCol(id),
 		Cpu:    NewGaugeCol(),
-		Memory: NewGaugeCol(),
+		Mem:    NewGaugeCol(),
 		Net:    NewTextCol("-"),
 		IO:     NewTextCol("-"),
 		Pids:   NewTextCol("-"),
+		Bg:     NewRowBg(),
 		X:      1,
 		Height: 1,
 	}
@@ -56,10 +59,12 @@ func (row *Compact) SetMeta(k, v string) {
 		row.Name.Set(v)
 	case "state":
 		row.Status.Set(v)
+	case "health":
+		row.Status.SetHealth(v)
 	}
 }
 
-func (row *Compact) SetMetrics(m metrics.Metrics) {
+func (row *Compact) SetMetrics(m models.Metrics) {
 	row.SetCPU(m.CPUUtil)
 	row.SetNet(m.NetRx, m.NetTx)
 	row.SetMem(m.MemUsage, m.MemLimit, m.MemPercent)
@@ -70,7 +75,7 @@ func (row *Compact) SetMetrics(m metrics.Metrics) {
 // Set gauges, counters to default unread values
 func (row *Compact) Reset() {
 	row.Cpu.Reset()
-	row.Memory.Reset()
+	row.Mem.Reset()
 	row.Net.Reset()
 	row.IO.Reset()
 	row.Pids.Reset()
@@ -88,6 +93,8 @@ func (row *Compact) SetY(y int) {
 	if y == row.Y {
 		return
 	}
+
+	row.Bg.Y = y
 	for _, col := range row.all() {
 		col.SetY(y)
 	}
@@ -99,6 +106,10 @@ func (row *Compact) SetWidth(width int) {
 		return
 	}
 	x := row.X
+
+	row.Bg.SetX(x + colWidths[0] + 1)
+	row.Bg.SetWidth(width)
+
 	autoWidth := calcWidth(width)
 	for n, col := range row.all() {
 		if colWidths[n] != 0 {
@@ -117,11 +128,12 @@ func (row *Compact) SetWidth(width int) {
 func (row *Compact) Buffer() ui.Buffer {
 	buf := ui.NewBuffer()
 
+	buf.Merge(row.Bg.Buffer())
 	buf.Merge(row.Status.Buffer())
 	buf.Merge(row.Name.Buffer())
 	buf.Merge(row.Cid.Buffer())
 	buf.Merge(row.Cpu.Buffer())
-	buf.Merge(row.Memory.Buffer())
+	buf.Merge(row.Mem.Buffer())
 	buf.Merge(row.Net.Buffer())
 	buf.Merge(row.IO.Buffer())
 	buf.Merge(row.Pids.Buffer())
@@ -134,9 +146,50 @@ func (row *Compact) all() []ui.GridBufferer {
 		row.Name,
 		row.Cid,
 		row.Cpu,
-		row.Memory,
+		row.Mem,
 		row.Net,
 		row.IO,
 		row.Pids,
 	}
 }
+
+func (row *Compact) Highlight() {
+	row.Name.Highlight()
+	if config.GetSwitchVal("fullRowCursor") {
+		row.Bg.Highlight()
+		row.Cid.Highlight()
+		row.Cpu.Highlight()
+		row.Mem.Highlight()
+		row.Net.Highlight()
+		row.IO.Highlight()
+		row.Pids.Highlight()
+	}
+}
+
+func (row *Compact) UnHighlight() {
+	row.Name.UnHighlight()
+	if config.GetSwitchVal("fullRowCursor") {
+		row.Bg.UnHighlight()
+		row.Cid.UnHighlight()
+		row.Cpu.UnHighlight()
+		row.Mem.UnHighlight()
+		row.Net.UnHighlight()
+		row.IO.UnHighlight()
+		row.Pids.UnHighlight()
+	}
+}
+
+type RowBg struct {
+	*ui.Par
+}
+
+func NewRowBg() *RowBg {
+	bg := ui.NewPar("")
+	bg.Height = 1
+	bg.Border = false
+	bg.Bg = ui.ThemeAttr("par.text.bg")
+	return &RowBg{bg}
+}
+
+func (w *RowBg) Highlight()   { w.Bg = ui.ThemeAttr("par.text.fg") }
+func (w *RowBg) UnHighlight() { w.Bg = ui.ThemeAttr("par.text.bg") }

cwidgets/compact/setters.go

@@ -19,7 +19,7 @@ func (row *Compact) SetIO(read int64, write int64) {
 }
 
 func (row *Compact) SetPids(val int) {
-	label := fmt.Sprintf("%s", strconv.Itoa(val))
+	label := strconv.Itoa(val)
 	row.Pids.Set(label)
 }
 
@@ -37,12 +37,12 @@ func (row *Compact) SetCPU(val int) {
 }
 
 func (row *Compact) SetMem(val int64, limit int64, percent int) {
-	row.Memory.Label = fmt.Sprintf("%s / %s", cwidgets.ByteFormat(val), cwidgets.ByteFormat(limit))
+	row.Mem.Label = fmt.Sprintf("%s / %s", cwidgets.ByteFormat(val), cwidgets.ByteFormat(limit))
 	if percent < 5 {
 		percent = 5
-		row.Memory.BarColor = ui.ColorBlack
+		row.Mem.BarColor = ui.ColorBlack
 	} else {
-		row.Memory.BarColor = ui.ThemeAttr("gauge.bar.bg")
+		row.Mem.BarColor = ui.ThemeAttr("gauge.bar.bg")
 	}
-	row.Memory.Percent = percent
+	row.Mem.Percent = percent
 }

cwidgets/compact/status.go

@@ -1,28 +1,42 @@
 package compact
 
 import (
-	"fmt"
-
 	ui "github.com/gizak/termui"
 )
 
 const (
 	mark       = string('\u25C9')
-	vBar        = string('\u25AE')
+	healthMark = string('\u207A')
-	statusWidth = 3
+	vBar       = string('\u25AE') + string('\u25AE')
 )
 
 // Status indicator
 type Status struct {
-	*ui.Par
+	*ui.Block
+	status []ui.Cell
+	health []ui.Cell
 }
 
 func NewStatus() *Status {
-	p := ui.NewPar(mark)
+	s := &Status{Block: ui.NewBlock()}
-	p.Border = false
+	s.Height = 1
-	p.Height = 1
+	s.Border = false
-	p.Width = statusWidth
+	s.Set("")
-	return &Status{p}
+	return s
+}
+
+func (s *Status) Buffer() ui.Buffer {
+	buf := s.Block.Buffer()
+	x := 0
+	for _, c := range s.status {
+		buf.Set(s.InnerX()+x, s.InnerY(), c)
+		x += c.Width()
+	}
+	for _, c := range s.health {
+		buf.Set(s.InnerX()+x, s.InnerY(), c)
+		x += c.Width()
+	}
+	return buf
 }
 
 func (s *Status) Set(val string) {
@@ -32,13 +46,38 @@ func (s *Status) Set(val string) {
 
 	switch val {
 	case "running":
-		color = ui.ColorGreen
+		color = ui.ThemeAttr("status.ok")
 	case "exited":
-		color = ui.ColorRed
+		color = ui.ThemeAttr("status.danger")
 	case "paused":
-		text = fmt.Sprintf("%s%s", vBar, vBar)
+		text = vBar
 	}
 
-	s.Text = text
+	var cells []ui.Cell
-	s.TextFgColor = color
+	for _, ch := range text {
+		cells = append(cells, ui.Cell{Ch: ch, Fg: color})
+	}
+	s.status = cells
+}
+
+func (s *Status) SetHealth(val string) {
+	if val == "" {
+		return
+	}
+	color := ui.ColorDefault
+
+	switch val {
+	case "healthy":
+		color = ui.ThemeAttr("status.ok")
+	case "unhealthy":
+		color = ui.ThemeAttr("status.danger")
+	case "starting":
+		color = ui.ThemeAttr("status.warn")
+	}
+
+	var cells []ui.Cell
+	for _, ch := range healthMark {
+		cells = append(cells, ui.Cell{Ch: ch, Fg: color})
+	}
+	s.health = cells
 }

cwidgets/compact/text.go

@@ -17,11 +17,13 @@ func NewTextCol(s string) *TextCol {
 }
 
 func (w *TextCol) Highlight() {
+	w.Bg = ui.ThemeAttr("par.text.fg")
 	w.TextFgColor = ui.ThemeAttr("par.text.hi")
 	w.TextBgColor = ui.ThemeAttr("par.text.fg")
 }
 
 func (w *TextCol) UnHighlight() {
+	w.Bg = ui.ThemeAttr("par.text.bg")
 	w.TextFgColor = ui.ThemeAttr("par.text.fg")
 	w.TextBgColor = ui.ThemeAttr("par.text.bg")
 }

cwidgets/compact/util.go

@@ -4,6 +4,7 @@ package compact
 
 import (
 	"fmt"
+
 	ui "github.com/gizak/termui"
 )
 
@@ -28,7 +29,7 @@ func calcWidth(width int) int {
 	for _, w := range colWidths {
 		width -= w
 		if w == 0 {
-			staticCols += 1
+			staticCols++
 		}
 	}
 	return (width - spacing) / staticCols

cwidgets/main.go

@@ -2,12 +2,12 @@ package cwidgets
 
 import (
 	"github.com/bcicen/ctop/logging"
-	"github.com/bcicen/ctop/metrics"
+	"github.com/bcicen/ctop/models"
 )
 
 var log = logging.Init()
 
 type WidgetUpdater interface {
 	SetMeta(string, string)
-	SetMetrics(metrics.Metrics)
+	SetMetrics(models.Metrics)
 }

cwidgets/single/cpu.go

@@ -1,4 +1,4 @@
-package expanded
+package single
 
 import (
 	ui "github.com/gizak/termui"

cwidgets/single/env.go

@@ -0,0 +1,36 @@
+package single
+
+import (
+	ui "github.com/gizak/termui"
+	"regexp"
+)
+
+var envPattern = regexp.MustCompile(`(?P<KEY>[^=]+)=(?P<VALUJE>.*)`)
+
+type Env struct {
+	*ui.Table
+	data map[string]string
+}
+
+func NewEnv() *Env {
+	p := ui.NewTable()
+	p.Height = 4
+	p.Width = colWidth[0]
+	p.FgColor = ui.ThemeAttr("par.text.fg")
+	p.Separator = false
+	i := &Env{p, make(map[string]string)}
+	i.BorderLabel = "Env"
+	return i
+}
+
+func (w *Env) Set(k, v string) {
+	match := envPattern.FindStringSubmatch(v)
+	key := match[1]
+	value := match[2]
+	w.data[key] = value
+
+	w.Rows = [][]string{}
+	w.Rows = append(w.Rows, mkInfoRows(key, value)...)
+
+	w.Height = len(w.Rows) + 2
+}

cwidgets/single/hist.go

@@ -1,4 +1,4 @@
-package expanded
+package single
 
 type IntHist struct {
 	Val    int   // most current data point

cwidgets/single/info.go

@@ -1,4 +1,4 @@
-package expanded
+package single
 
 import (
 	"strings"
@@ -6,7 +6,7 @@ import (
 	ui "github.com/gizak/termui"
 )
 
-var displayInfo = []string{"id", "name", "image", "ports", "state", "created"}
+var displayInfo = []string{"id", "name", "image", "ports", "IPs", "state", "created", "health"}
 
 type Info struct {
 	*ui.Table
@@ -45,7 +45,7 @@ func mkInfoRows(k, v string) (rows [][]string) {
 	// initial row with field name
 	rows = append(rows, []string{k, lines[0]})
 
-	// append any additional lines in seperate row
+	// append any additional lines in separate row
 	if len(lines) > 1 {
 		for _, line := range lines[1:] {
 			if line != "" {

cwidgets/single/io.go

@@ -1,4 +1,4 @@
-package expanded
+package single
 
 import (
 	"fmt"

cwidgets/single/logs.go

@@ -0,0 +1,83 @@
+package single
+
+import (
+	"time"
+
+	"github.com/bcicen/ctop/models"
+	ui "github.com/gizak/termui"
+)
+
+type LogLines struct {
+	ts   []time.Time
+	data []string
+}
+
+func NewLogLines(max int) *LogLines {
+	ll := &LogLines{
+		ts:   make([]time.Time, max),
+		data: make([]string, max),
+	}
+	return ll
+}
+
+func (ll *LogLines) tail(n int) []string {
+	lines := make([]string, n)
+	for i := 0; i < n; i++ {
+		lines = append(lines, ll.data[len(ll.data)-i])
+	}
+	return lines
+}
+func (ll *LogLines) getLines(start, end int) []string {
+	if end < 0 {
+		return ll.data[start:]
+	}
+	return ll.data[start:end]
+}
+
+func (ll *LogLines) add(l models.Log) {
+	if len(ll.data) == cap(ll.data) {
+		ll.data = append(ll.data[:0], ll.data[1:]...)
+		ll.ts = append(ll.ts[:0], ll.ts[1:]...)
+	}
+	ll.ts = append(ll.ts, l.Timestamp)
+	ll.data = append(ll.data, l.Message)
+	log.Debugf("recorded log line: %v", l)
+}
+
+type Logs struct {
+	*ui.List
+	lines *LogLines
+}
+
+func NewLogs(stream chan models.Log) *Logs {
+	p := ui.NewList()
+	p.Y = ui.TermHeight() / 2
+	p.X = 0
+	p.Height = ui.TermHeight() - p.Y
+	p.Width = ui.TermWidth()
+	//p.Overflow = "wrap"
+	p.ItemFgColor = ui.ThemeAttr("par.text.fg")
+	i := &Logs{p, NewLogLines(4098)}
+	go func() {
+		for line := range stream {
+			i.lines.add(line)
+			ui.Render(i)
+		}
+	}()
+	return i
+}
+
+func (w *Logs) Align() {
+	w.X = colWidth[0]
+	w.List.Align()
+}
+
+func (w *Logs) Buffer() ui.Buffer {
+	maxLines := w.Height - 2
+	offset := len(w.lines.data) - maxLines
+	w.Items = w.lines.getLines(offset, -1)
+	return w.List.Buffer()
+}
+
+// number of rows a line will occupy at current panel width
+func (w *Logs) lineHeight(s string) int { return (len(s) / w.InnerWidth()) + 1 }

cwidgets/single/main.go

@@ -1,8 +1,8 @@
-package expanded
+package single
 
 import (
 	"github.com/bcicen/ctop/logging"
-	"github.com/bcicen/ctop/metrics"
+	"github.com/bcicen/ctop/models"
 	ui "github.com/gizak/termui"
 )
 
@@ -12,31 +12,33 @@ var (
 	colWidth  = [2]int{65, 0} // left,right column width
 )
 
-type Expanded struct {
+type Single struct {
 	Info  *Info
 	Net   *Net
 	Cpu   *Cpu
 	Mem   *Mem
 	IO    *IO
+	Env   *Env
 	X, Y  int
 	Width int
 }
 
-func NewExpanded(id string) *Expanded {
+func NewSingle(id string) *Single {
 	if len(id) > 12 {
 		id = id[:12]
 	}
-	return &Expanded{
+	return &Single{
 		Info:  NewInfo(id),
 		Net:   NewNet(),
 		Cpu:   NewCpu(),
 		Mem:   NewMem(),
 		IO:    NewIO(),
+		Env:   NewEnv(),
 		Width: ui.TermWidth(),
 	}
 }
 
-func (e *Expanded) Up() {
+func (e *Single) Up() {
 	if e.Y < 0 {
 		e.Y++
 		e.Align()
@@ -44,7 +46,7 @@ func (e *Expanded) Up() {
 	}
 }
 
-func (e *Expanded) Down() {
+func (e *Single) Down() {
 	if e.Y > (ui.TermHeight() - e.GetHeight()) {
 		e.Y--
 		e.Align()
@@ -52,10 +54,16 @@ func (e *Expanded) Down() {
 	}
 }
 
-func (e *Expanded) SetWidth(w int)      { e.Width = w }
+func (e *Single) SetWidth(w int) { e.Width = w }
-func (e *Expanded) SetMeta(k, v string) { e.Info.Set(k, v) }
+func (e *Single) SetMeta(k, v string) {
+	if k == "[ENV-VAR]" {
+		e.Env.Set(k, v)
+	} else {
+		e.Info.Set(k, v)
+	}
+}
 
-func (e *Expanded) SetMetrics(m metrics.Metrics) {
+func (e *Single) SetMetrics(m models.Metrics) {
 	e.Cpu.Update(m.CPUUtil)
 	e.Net.Update(m.NetRx, m.NetTx)
 	e.Mem.Update(int(m.MemUsage), int(m.MemLimit))
@@ -63,16 +71,17 @@ func (e *Expanded) SetMetrics(m metrics.Metrics) {
 }
 
 // Return total column height
-func (e *Expanded) GetHeight() (h int) {
+func (e *Single) GetHeight() (h int) {
 	h += e.Info.Height
 	h += e.Net.Height
 	h += e.Cpu.Height
 	h += e.Mem.Height
 	h += e.IO.Height
+	h += e.Env.Height
 	return h
 }
 
-func (e *Expanded) Align() {
+func (e *Single) Align() {
 	// reset offset if needed
 	if e.GetHeight() <= ui.TermHeight() {
 		e.Y = 0
@@ -91,10 +100,7 @@ func (e *Expanded) Align() {
 	log.Debugf("align: width=%v left-col=%v right-col=%v", e.Width, colWidth[0], colWidth[1])
 }
 
-func calcWidth(w int) {
+func (e *Single) Buffer() ui.Buffer {
-}
-
-func (e *Expanded) Buffer() ui.Buffer {
 	buf := ui.NewBuffer()
 	if e.Width < (colWidth[0] + colWidth[1]) {
 		ui.Clear()
@@ -106,16 +112,18 @@ func (e *Expanded) Buffer() ui.Buffer {
 	buf.Merge(e.Mem.Buffer())
 	buf.Merge(e.Net.Buffer())
 	buf.Merge(e.IO.Buffer())
+	buf.Merge(e.Env.Buffer())
 	return buf
 }
 
-func (e *Expanded) all() []ui.GridBufferer {
+func (e *Single) all() []ui.GridBufferer {
 	return []ui.GridBufferer{
 		e.Info,
 		e.Cpu,
 		e.Mem,
 		e.Net,
 		e.IO,
+		e.Env,
 	}
 }
 

cwidgets/single/mem.go

@@ -1,4 +1,4 @@
-package expanded
+package single
 
 import (
 	"fmt"

cwidgets/single/net.go

@@ -1,4 +1,4 @@
-package expanded
+package single
 
 import (
 	"fmt"

debug.go

@@ -3,11 +3,14 @@ package main
 import (
 	"fmt"
 	"reflect"
+	"runtime"
 
 	"github.com/bcicen/ctop/container"
 	ui "github.com/gizak/termui"
 )
 
+var mstats = &runtime.MemStats{}
+
 func logEvent(e ui.Event) {
 	var s string
 	s += fmt.Sprintf("Type=%s", quote(e.Type))
@@ -19,6 +22,22 @@ func logEvent(e ui.Event) {
 	log.Debugf("new event: %s", s)
 }
 
+func runtimeStats() {
+	var msg string
+	msg += fmt.Sprintf("cgo calls=%v", runtime.NumCgoCall())
+	msg += fmt.Sprintf(" routines=%v", runtime.NumGoroutine())
+	runtime.ReadMemStats(mstats)
+	msg += fmt.Sprintf(" numgc=%v", mstats.NumGC)
+	msg += fmt.Sprintf(" alloc=%v", mstats.Alloc)
+	log.Debugf("runtime: %v", msg)
+}
+
+func runtimeStack() {
+	buf := make([]byte, 32768)
+	buf = buf[:runtime.Stack(buf, true)]
+	log.Infof(fmt.Sprintf("stack:\n%v", string(buf)))
+}
+
 // log container, metrics, and widget state
 func dumpContainer(c *container.Container) {
 	msg := fmt.Sprintf("logging state for container: %s\n", c.Id)

glide.lock

@@ -1,129 +0,0 @@
-hash: 0d550b01b3a1c4751a8f5c3fba0c43f62252055e231712729628e514bb494da8
-updated: 2017-06-09T18:11:10.930196504-03:00
-imports:
-- name: github.com/Azure/go-ansiterm
-  version: fa152c58bc15761d0200cb75fe958b89a9d4888e
-  subpackages:
-  - winterm
-- name: github.com/c9s/goprocinfo
-  version: b34328d6e0cd139894ea7347d2624ccf31fa3c58
-  subpackages:
-  - linux
-- name: github.com/coreos/go-systemd
-  version: b4a58d95188dd092ae20072bac14cece0e67c388
-  subpackages:
-  - activation
-  - dbus
-  - util
-- name: github.com/docker/docker
-  version: 90d35abf7b3535c1c319c872900fbd76374e521c
-  subpackages:
-  - api/types
-  - api/types/blkiodev
-  - api/types/container
-  - api/types/filters
-  - api/types/mount
-  - api/types/network
-  - api/types/registry
-  - api/types/strslice
-  - api/types/swarm
-  - api/types/versions
-  - opts
-  - pkg/archive
-  - pkg/fileutils
-  - pkg/homedir
-  - pkg/idtools
-  - pkg/ioutils
-  - pkg/jsonlog
-  - pkg/jsonmessage
-  - pkg/longpath
-  - pkg/mount
-  - pkg/pools
-  - pkg/promise
-  - pkg/stdcopy
-  - pkg/symlink
-  - pkg/system
-  - pkg/term
-  - pkg/term/windows
-- name: github.com/docker/go-connections
-  version: a2afab9802043837035592f1c24827fb70766de9
-  subpackages:
-  - nat
-- name: github.com/docker/go-units
-  version: 0dadbb0345b35ec7ef35e228dabb8de89a65bf52
-- name: github.com/fsouza/go-dockerclient
-  version: 318513eb1ab27495afbc67f671ba1080513d8aa0
-- name: github.com/gizak/termui
-  version: ea10e6ccee219e572ffad0ac1909f1a17f6db7d6
-  repo: https://github.com/bcicen/termui
-  vcs: git
-- name: github.com/godbus/dbus
-  version: c7fdd8b5cd55e87b4e1f4e372cdb1db61dd6c66f
-- name: github.com/golang/protobuf
-  version: f7137ae6b19afbfd61a94b746fda3b3fe0491874
-  subpackages:
-  - proto
-- name: github.com/hashicorp/go-cleanhttp
-  version: 3573b8b52aa7b37b9358d966a898feb387f62437
-- name: github.com/jgautheron/codename-generator
-  version: 16d037c7cc3c9b552fe4af9828b7338d752dbaf9
-- name: github.com/maruel/panicparse
-  version: 25bcac0d793cf4109483505a0d66e066a3a90a80
-  subpackages:
-  - stack
-- name: github.com/mattn/go-runewidth
-  version: 14207d285c6c197daabb5c9793d63e7af9ab2d50
-- name: github.com/Microsoft/go-winio
-  version: fff283ad5116362ca252298cfc9b95828956d85d
-- name: github.com/mitchellh/go-wordwrap
-  version: ad45545899c7b13c020ea92b2072220eefad42b8
-- name: github.com/nsf/termbox-go
-  version: 91bae1bb5fa9ee504905ecbe7043fa30e92feaa3
-- name: github.com/nu7hatch/gouuid
-  version: 179d4d0c4d8d407a32af483c2354df1d2c91e6c3
-- name: github.com/Nvveen/Gotty
-  version: cd527374f1e5bff4938207604a14f2e38a9cf512
-- name: github.com/op/go-logging
-  version: b2cb9fa56473e98db8caba80237377e83fe44db5
-- name: github.com/opencontainers/runc
-  version: baf6536d6259209c3edfa2b22237af82942d3dfa
-  subpackages:
-  - libcontainer
-  - libcontainer/apparmor
-  - libcontainer/cgroups
-  - libcontainer/cgroups/fs
-  - libcontainer/cgroups/systemd
-  - libcontainer/configs
-  - libcontainer/configs/validate
-  - libcontainer/criurpc
-  - libcontainer/keys
-  - libcontainer/label
-  - libcontainer/seccomp
-  - libcontainer/selinux
-  - libcontainer/stacktrace
-  - libcontainer/system
-  - libcontainer/user
-  - libcontainer/utils
-- name: github.com/seccomp/libseccomp-golang
-  version: 1b506fc7c24eec5a3693cdcbed40d9c226cfc6a1
-- name: github.com/Sirupsen/logrus
-  version: 26709e2714106fb8ad40b773b711ebce25b78914
-- name: github.com/syndtr/gocapability
-  version: 2c00daeb6c3b45114c80ac44119e7b8801fdd852
-  subpackages:
-  - capability
-- name: github.com/vishvananda/netlink
-  version: 1e2e08e8a2dcdacaae3f14ac44c5cfa31361f270
-  subpackages:
-  - nl
-- name: golang.org/x/net
-  version: a6577fac2d73be281a500b310739095313165611
-  subpackages:
-  - context
-  - context/ctxhttp
-- name: golang.org/x/sys
-  version: 99f16d856c9836c42d24e7ab64ea72916925fa97
-  subpackages:
-  - unix
-  - windows
-testImports: []

glide.yaml

@@ -1,18 +0,0 @@
-package: github.com/bcicen/ctop
-import:
-- package: github.com/c9s/goprocinfo/linux
-- package: github.com/docker/docker
-  version: ^17.5.0-ce-rc3
-- package: github.com/opencontainers/runc
-  version: 0.1.1
-- package: github.com/fsouza/go-dockerclient
-  version: 318513eb1ab27495afbc67f671ba1080513d8aa0
-- package: github.com/gizak/termui
-  version: barchart-numfmt
-  repo: https://github.com/bcicen/termui
-  vcs: git
-- package: github.com/jgautheron/codename-generator
-- package: github.com/nu7hatch/gouuid
-- package: github.com/c9s/goprocinfo/linux
-- package: github.com/op/go-logging
-  version: ^1.0.0

go.mod

@@ -0,0 +1,41 @@
+module github.com/bcicen/ctop
+
+require (
+	github.com/Azure/go-ansiterm v0.0.0-20160622173216-fa152c58bc15 // indirect
+	github.com/BurntSushi/toml v0.3.0
+	github.com/Microsoft/go-winio v0.3.8 // indirect
+	github.com/Nvveen/Gotty v0.0.0-20120604004816-cd527374f1e5 // indirect
+	github.com/Sirupsen/logrus v0.0.0-20150423025312-26709e271410 // indirect
+	github.com/c9s/goprocinfo v0.0.0-20170609001544-b34328d6e0cd
+	github.com/coreos/go-systemd v0.0.0-20151104194251-b4a58d95188d // indirect
+	github.com/davecgh/go-spew v1.1.1 // indirect
+	github.com/docker/docker v0.0.0-20170502054910-90d35abf7b35 // indirect
+	github.com/docker/go-connections v0.0.0-20170301234100-a2afab980204 // indirect
+	github.com/docker/go-units v0.3.2 // indirect
+	github.com/fsouza/go-dockerclient v0.0.0-20170307141636-318513eb1ab2
+	github.com/gizak/termui v2.3.0+incompatible
+	github.com/godbus/dbus v0.0.0-20151105175453-c7fdd8b5cd55 // indirect
+	github.com/golang/protobuf v0.0.0-20170712042213-0a4f71a498b7 // indirect
+	github.com/hashicorp/go-cleanhttp v0.0.0-20170211013415-3573b8b52aa7 // indirect
+	github.com/jgautheron/codename-generator v0.0.0-20150829203204-16d037c7cc3c
+	github.com/kr/pretty v0.1.0 // indirect
+	github.com/maruel/panicparse v0.0.0-20170227222818-25bcac0d793c // indirect
+	github.com/maruel/ut v1.0.0 // indirect
+	github.com/mattn/go-runewidth v0.0.0-20170201023540-14207d285c6c // indirect
+	github.com/mitchellh/go-wordwrap v0.0.0-20150314170334-ad45545899c7 // indirect
+	github.com/nsf/termbox-go v0.0.0-20180303152453-e2050e41c884
+	github.com/nu7hatch/gouuid v0.0.0-20131221200532-179d4d0c4d8d
+	github.com/op/go-logging v0.0.0-20160211212156-b2cb9fa56473
+	github.com/opencontainers/runc v0.1.1
+	github.com/pmezard/go-difflib v1.0.0 // indirect
+	github.com/seccomp/libseccomp-golang v0.0.0-20150813023252-1b506fc7c24e // indirect
+	github.com/stretchr/testify v1.2.2 // indirect
+	github.com/syndtr/gocapability v0.0.0-20150716010906-2c00daeb6c3b // indirect
+	github.com/vishvananda/netlink v0.0.0-20150820014904-1e2e08e8a2dc // indirect
+	github.com/vishvananda/netns v0.0.0-20180720170159-13995c7128cc // indirect
+	golang.org/x/net v0.0.0-20170308210134-a6577fac2d73 // indirect
+	golang.org/x/sync v0.0.0-20181108010431-42b317875d0f // indirect
+	golang.org/x/sys v0.0.0-20170308153327-99f16d856c98 // indirect
+)
+
+replace github.com/gizak/termui => github.com/bcicen/termui v0.0.0-20180326052246-4eb80249d3f5

grid.go

@@ -2,8 +2,7 @@ package main
 
 import (
 	"github.com/bcicen/ctop/config"
-	"github.com/bcicen/ctop/container"
+	"github.com/bcicen/ctop/cwidgets/single"
-	"github.com/bcicen/ctop/cwidgets/expanded"
 	ui "github.com/gizak/termui"
 )
 
@@ -18,6 +17,7 @@ func RedrawRows(clr bool) {
 		header.SetFilter(config.GetVal("filterStr"))
 		y += header.Height()
 	}
+
 	cGrid.SetY(y)
 
 	for _, c := range cursor.filtered {
@@ -33,14 +33,20 @@ func RedrawRows(clr bool) {
 	}
 	cGrid.Align()
 	ui.Render(cGrid)
+
 }
 
-func ExpandView(c *container.Container) {
+func SingleView() MenuFn {
+	c := cursor.Selected()
+	if c == nil {
+		return nil
+	}
+
 	ui.Clear()
 	ui.DefaultEvtStream.ResetHandlers()
 	defer ui.DefaultEvtStream.ResetHandlers()
 
-	ex := expanded.NewExpanded(c.Id)
+	ex := single.NewSingle(c.Id)
 	c.SetUpdater(ex)
 
 	ex.Align()
@@ -59,6 +65,7 @@ func ExpandView(c *container.Container) {
 
 	ui.Loop()
 	c.SetUpdater(c.Widgets)
+	return nil
 }
 
 func RefreshDisplay() {
@@ -70,14 +77,14 @@ func RefreshDisplay() {
 }
 
 func Display() bool {
-	var menu func()
+	var menu MenuFn
-	var expand bool
 
 	cGrid.SetWidth(ui.TermWidth())
 	ui.DefaultEvtStream.Hook(logEvent)
 
 	// initial draw
 	header.Align()
+	status.Align()
 	cursor.RefreshContainers()
 	RedrawRows(true)
 
@@ -94,7 +101,23 @@ func Display() bool {
 	})
 
 	ui.Handle("/sys/kbd/<enter>", func(ui.Event) {
-		expand = true
+		menu = ContainerMenu
+		ui.StopLoop()
+	})
+	ui.Handle("/sys/kbd/<left>", func(ui.Event) {
+		menu = LogMenu
+		ui.StopLoop()
+	})
+	ui.Handle("/sys/kbd/<right>", func(ui.Event) {
+		menu = SingleView
+		ui.StopLoop()
+	})
+	ui.Handle("/sys/kbd/l", func(ui.Event) {
+		menu = LogMenu
+		ui.StopLoop()
+	})
+	ui.Handle("/sys/kbd/o", func(ui.Event) {
+		menu = SingleView
 		ui.StopLoop()
 	})
 	ui.Handle("/sys/kbd/a", func(ui.Event) {
@@ -119,13 +142,26 @@ func Display() bool {
 		menu = SortMenu
 		ui.StopLoop()
 	})
+	ui.Handle("/sys/kbd/S", func(ui.Event) {
+		path, err := config.Write()
+		if err == nil {
+			log.Statusf("wrote config to %s", path)
+		} else {
+			log.StatusErr(err)
+		}
+		ui.StopLoop()
+	})
 
 	ui.Handle("/timer/1s", func(e ui.Event) {
+		if log.StatusQueued() {
+			ui.StopLoop()
+		}
 		RefreshDisplay()
 	})
 
 	ui.Handle("/sys/wnd/resize", func(e ui.Event) {
 		header.Align()
+		status.Align()
 		cursor.ScrollPage()
 		cGrid.SetWidth(ui.TermWidth())
 		log.Infof("resize: width=%v max-rows=%v", cGrid.Width, cGrid.MaxRows())
@@ -133,16 +169,24 @@ func Display() bool {
 	})
 
 	ui.Loop()
+
+	if log.StatusQueued() {
+		for sm := range log.FlushStatus() {
+			if sm.IsError {
+				status.ShowErr(sm.Text)
+			} else {
+				status.Show(sm.Text)
+			}
+		}
+		return false
+	}
+
 	if menu != nil {
-		menu()
+		for menu != nil {
-		return false
+			menu = menu()
-	}
-	if expand {
-		c := cursor.Selected()
-		if c != nil {
-			ExpandView(c)
 		}
 		return false
 	}
+
 	return true
 }

install.sh

@@ -0,0 +1,84 @@
+#!/usr/bin/env bash
+# a simple install script for ctop
+
+KERNEL=$(uname -s)
+
+function output() { echo -e "\033[32mctop-install\033[0m $@"; }
+
+function command_exists() {
+  command -v "$@" > /dev/null 2>&1
+}
+
+# extract github download url matching pattern
+function extract_url() {
+  match=$1; shift
+  echo "$@" | while read line; do
+    case $line in
+      *browser_download_url*${match}*)
+        url=$(echo $line | sed -e 's/^.*"browser_download_url":[ ]*"//' -e 's/".*//;s/\ //g')
+        echo $url
+        break
+      ;;
+    esac
+  done
+}
+
+case $KERNEL in
+  Linux) MATCH_BUILD="linux-amd64" ;;
+  Darwin) MATCH_BUILD="darwin-amd64" ;;
+  *)
+    echo "platform not supported by this install script"
+    exit 1
+    ;;
+esac
+
+for req in curl wget; do
+  command_exists $req || {
+    output "missing required $req binary"
+    req_failed=1
+  }
+done
+[ "$req_failed" == 1 ] && exit 1
+
+sh_c='sh -c'
+if [ "$CURRENT_USER" != 'root' ]; then
+  if command_exists sudo; then
+    sh_c='sudo -E sh -c'
+  elif command_exists su; then
+    sh_c='su -c'
+  else
+    output "Error: this installer needs the ability to run commands as root. We are unable to find either "sudo" or "su" available to make this happen."
+    exit 1
+  fi
+fi
+
+TMP=$(mktemp -d "${TMPDIR:-/tmp}/ctop.XXXXX")
+cd ${TMP}
+
+output "fetching latest release info"
+resp=$(curl -s https://api.github.com/repos/bcicen/ctop/releases/latest)
+
+output "fetching release checksums"
+checksum_url=$(extract_url sha256sums.txt "$resp")
+wget -q $checksum_url -O sha256sums.txt
+
+# skip if latest already installed
+cur_ctop=$(which ctop 2> /dev/null)
+if [[ -n "$cur_ctop" ]]; then
+  cur_sum=$(sha256sum $cur_ctop | sed 's/ .*//')
+  (grep -q $cur_sum sha256sums.txt) && {
+    output "already up-to-date"
+    exit 0
+  }
+fi
+
+output "fetching latest ctop"
+url=$(extract_url $MATCH_BUILD "$resp")
+wget -q --show-progress $url
+(sha256sum -c --quiet --ignore-missing sha256sums.txt) || exit 1
+
+output "installing to /usr/local/bin"
+chmod +x ctop-*
+$sh_c "mv ctop-* /usr/local/bin/ctop"
+
+output "done!"

logging/main.go

@@ -1,6 +1,7 @@
 package logging
 
 import (
+	"fmt"
 	"os"
 	"time"
 
@@ -20,11 +21,36 @@ var (
 	)
 )
 
+type statusMsg struct {
+	Text    string
+	IsError bool
+}
+
 type CTopLogger struct {
 	*logging.Logger
 	backend *logging.MemoryBackend
+	sLog    []statusMsg
 }
 
+func (c *CTopLogger) FlushStatus() chan statusMsg {
+	ch := make(chan statusMsg)
+	go func() {
+		for _, sm := range c.sLog {
+			ch <- sm
+		}
+		close(ch)
+		c.sLog = []statusMsg{}
+	}()
+	return ch
+}
+
+func (c *CTopLogger) StatusQueued() bool     { return len(c.sLog) > 0 }
+func (c *CTopLogger) Status(s string)        { c.addStatus(statusMsg{s, false}) }
+func (c *CTopLogger) StatusErr(err error)    { c.addStatus(statusMsg{err.Error(), true}) }
+func (c *CTopLogger) addStatus(sm statusMsg) { c.sLog = append(c.sLog, sm) }
+
+func (c *CTopLogger) Statusf(s string, a ...interface{}) { c.Status(fmt.Sprintf(s, a...)) }
+
 func Init() *CTopLogger {
 	if Log == nil {
 		logging.SetFormatter(format) // setup default formatter
@@ -32,6 +58,7 @@ func Init() *CTopLogger {
 		Log = &CTopLogger{
 			logging.MustGetLogger("ctop"),
 			logging.NewMemoryBackend(size),
+			[]statusMsg{},
 		}
 
 		if debugMode() {

logging/server.go

@@ -2,6 +2,7 @@ package logging
 
 import (
 	"fmt"
+	"io"
 	"net"
 	"sync"
 )
@@ -56,13 +57,13 @@ func StopServer() {
 	}
 }
 
-func handler(conn net.Conn) {
+func handler(wc io.WriteCloser) {
 	server.wg.Add(1)
 	defer server.wg.Done()
-	defer conn.Close()
+	defer wc.Close()
 	for msg := range Log.tail() {
 		msg = fmt.Sprintf("%s\n", msg)
-		conn.Write([]byte(msg))
+		wc.Write([]byte(msg))
 	}
-	conn.Write([]byte("bye\n"))
+	wc.Write([]byte("bye\n"))
 }

main.go

@@ -4,6 +4,8 @@ import (
 	"flag"
 	"fmt"
 	"os"
+	"runtime"
+	"strings"
 
 	"github.com/bcicen/ctop/config"
 	"github.com/bcicen/ctop/connector"
@@ -18,27 +20,32 @@ import (
 var (
 	build     = "none"
 	version   = "dev-build"
+	goVersion = runtime.Version()
 
 	log    *logging.CTopLogger
 	cursor *GridCursor
 	cGrid  *compact.CompactGrid
 	header *widgets.CTopHeader
+	status *widgets.StatusLine
 
-	versionStr = fmt.Sprintf("ctop version %v, build %v", version, build)
+	versionStr = fmt.Sprintf("ctop version %v, build %v %v", version, build, goVersion)
 )
 
 func main() {
 	defer panicExit()
 
 	// parse command line arguments
-	var versionFlag = flag.Bool("v", false, "output version information and exit")
+	var (
-	var helpFlag = flag.Bool("h", false, "display this help dialog")
+		versionFlag     = flag.Bool("v", false, "output version information and exit")
-	var filterFlag = flag.String("f", "", "filter containers")
+		helpFlag        = flag.Bool("h", false, "display this help dialog")
-	var activeOnlyFlag = flag.Bool("a", false, "show active containers only")
+		filterFlag      = flag.String("f", "", "filter containers")
-	var sortFieldFlag = flag.String("s", "", "select container sort field")
+		activeOnlyFlag  = flag.Bool("a", false, "show active containers only")
-	var reverseSortFlag = flag.Bool("r", false, "reverse container sort order")
+		sortFieldFlag   = flag.String("s", "", "select container sort field")
-	var invertFlag = flag.Bool("i", false, "invert default colors")
+		reverseSortFlag = flag.Bool("r", false, "reverse container sort order")
-	var connectorFlag = flag.String("connector", "docker", "container connector to use")
+		invertFlag      = flag.Bool("i", false, "invert default colors")
+		scaleCpu        = flag.Bool("scale-cpu", false, "show cpu as % of system total")
+		connectorFlag   = flag.String("connector", "docker", "container connector to use")
+	)
 	flag.Parse()
 
 	if *versionFlag {
@@ -54,8 +61,9 @@ func main() {
 	// init logger
 	log = logging.Init()
 
-	// init global config
+	// init global config and read config file if exists
 	config.Init()
+	config.Read()
 
 	// override default config values with command line flags
 	if *filterFlag != "" {
@@ -75,6 +83,10 @@ func main() {
 		config.Toggle("sortReversed")
 	}
 
+	if *scaleCpu {
+		config.Toggle("scaleCpu")
+	}
+
 	// init ui
 	if *invertFlag {
 		InvertColorMap()
@@ -83,6 +95,7 @@ func main() {
 	if err := ui.Init(); err != nil {
 		panic(err)
 	}
+	tm.SetInputMode(tm.InputAlt)
 
 	defer Shutdown()
 	// init grid, cursor, header
@@ -93,6 +106,7 @@ func main() {
 	cursor = &GridCursor{cSource: conn}
 	cGrid = compact.NewCompactGrid()
 	header = widgets.NewCTopHeader()
+	status = widgets.NewStatusLine()
 
 	for {
 		exit := Display()
@@ -126,7 +140,7 @@ func panicExit() {
 	}
 }
 
-var helpMsg = `ctop - container metric viewer
+var helpMsg = `ctop - interactive container viewer
 
 usage: ctop [options]
 
@@ -136,4 +150,6 @@ options:
 func printHelp() {
 	fmt.Println(helpMsg)
 	flag.PrintDefaults()
+	fmt.Printf("\navailable connectors: ")
+	fmt.Println(strings.Join(connector.Enabled(), ", "))
 }

menus.go

@@ -1,6 +1,9 @@
 package main
 
 import (
+	"fmt"
+	"time"
+
 	"github.com/bcicen/ctop/config"
 	"github.com/bcicen/ctop/container"
 	"github.com/bcicen/ctop/widgets"
@@ -8,17 +11,25 @@ import (
 	ui "github.com/gizak/termui"
 )
 
+// MenuFn executes a menu window, returning the next menu or nil
+type MenuFn func() MenuFn
+
 var helpDialog = []menu.Item{
-	menu.Item{"[a] - toggle display of all containers", ""},
+	{"<enter> - open container menu", ""},
-	menu.Item{"[f] - filter displayed containers", ""},
+	{"", ""},
-	menu.Item{"[h] - open this help dialog", ""},
+	{"[a] - toggle display of all containers", ""},
-	menu.Item{"[H] - toggle ctop header", ""},
+	{"[f] - filter displayed containers", ""},
-	menu.Item{"[s] - select container sort field", ""},
+	{"[h] - open this help dialog", ""},
-	menu.Item{"[r] - reverse container sort order", ""},
+	{"[H] - toggle ctop header", ""},
-	menu.Item{"[q] - exit ctop", ""},
+	{"[s] - select container sort field", ""},
+	{"[r] - reverse container sort order", ""},
+	{"[o] - open single view", ""},
+	{"[l] - view container logs ([t] to toggle timestamp when open)", ""},
+	{"[S] - save current configuration to file", ""},
+	{"[q] - exit ctop", ""},
 }
 
-func HelpMenu() {
+func HelpMenu() MenuFn {
 	ui.Clear()
 	ui.DefaultEvtStream.ResetHandlers()
 	defer ui.DefaultEvtStream.ResetHandlers()
@@ -26,14 +37,18 @@ func HelpMenu() {
 	m := menu.NewMenu()
 	m.BorderLabel = "Help"
 	m.AddItems(helpDialog...)
+	ui.Handle("/sys/wnd/resize", func(e ui.Event) {
+		ui.Clear()
 		ui.Render(m)
+	})
 	ui.Handle("/sys/kbd/", func(ui.Event) {
 		ui.StopLoop()
 	})
 	ui.Loop()
+	return nil
 }
 
-func FilterMenu() {
+func FilterMenu() MenuFn {
 	ui.DefaultEvtStream.ResetHandlers()
 	defer ui.DefaultEvtStream.ResetHandlers()
 
@@ -63,9 +78,10 @@ func FilterMenu() {
 		ui.StopLoop()
 	})
 	ui.Loop()
+	return nil
 }
 
-func SortMenu() {
+func SortMenu() MenuFn {
 	ui.Clear()
 	ui.DefaultEvtStream.ResetHandlers()
 	defer ui.DefaultEvtStream.ResetHandlers()
@@ -93,4 +109,192 @@ func SortMenu() {
 
 	ui.Render(m)
 	ui.Loop()
+	return nil
 }
+
+func ContainerMenu() MenuFn {
+	c := cursor.Selected()
+	if c == nil {
+		return nil
+	}
+
+	ui.DefaultEvtStream.ResetHandlers()
+	defer ui.DefaultEvtStream.ResetHandlers()
+
+	m := menu.NewMenu()
+	m.Selectable = true
+	m.BorderLabel = "Menu"
+
+	items := []menu.Item{
+		menu.Item{Val: "single", Label: "single view"},
+		menu.Item{Val: "logs", Label: "log view"},
+	}
+
+	if c.Meta["state"] == "running" {
+		items = append(items, menu.Item{Val: "stop", Label: "stop"})
+		items = append(items, menu.Item{Val: "pause", Label: "pause"})
+		items = append(items, menu.Item{Val: "restart", Label: "restart"})
+	}
+	if c.Meta["state"] == "exited" || c.Meta["state"] == "created" {
+		items = append(items, menu.Item{Val: "start", Label: "start"})
+		items = append(items, menu.Item{Val: "remove", Label: "remove"})
+	}
+	if c.Meta["state"] == "paused" {
+		items = append(items, menu.Item{Val: "unpause", Label: "unpause"})
+	}
+	items = append(items, menu.Item{Val: "cancel", Label: "cancel"})
+
+	m.AddItems(items...)
+	ui.Render(m)
+
+	var nextMenu MenuFn
+	HandleKeys("up", m.Up)
+	HandleKeys("down", m.Down)
+	ui.Handle("/sys/kbd/<enter>", func(ui.Event) {
+		switch m.SelectedItem().Val {
+		case "single":
+			nextMenu = SingleView
+		case "logs":
+			nextMenu = LogMenu
+		case "start":
+			nextMenu = Confirm(confirmTxt("start", c.GetMeta("name")), c.Start)
+		case "stop":
+			nextMenu = Confirm(confirmTxt("stop", c.GetMeta("name")), c.Stop)
+		case "remove":
+			nextMenu = Confirm(confirmTxt("remove", c.GetMeta("name")), c.Remove)
+		case "pause":
+			nextMenu = Confirm(confirmTxt("pause", c.GetMeta("name")), c.Pause)
+		case "unpause":
+			nextMenu = Confirm(confirmTxt("unpause", c.GetMeta("name")), c.Unpause)
+		case "restart":
+			nextMenu = Confirm(confirmTxt("restart", c.GetMeta("name")), c.Restart)
+		}
+		ui.StopLoop()
+	})
+	ui.Handle("/sys/kbd/", func(ui.Event) {
+		ui.StopLoop()
+	})
+	ui.Loop()
+	return nextMenu
+}
+
+func LogMenu() MenuFn {
+
+	c := cursor.Selected()
+	if c == nil {
+		return nil
+	}
+
+	ui.DefaultEvtStream.ResetHandlers()
+	defer ui.DefaultEvtStream.ResetHandlers()
+
+	logs, quit := logReader(c)
+	m := widgets.NewTextView(logs)
+	m.BorderLabel = fmt.Sprintf("Logs [%s]", c.GetMeta("name"))
+	ui.Render(m)
+
+	ui.Handle("/sys/wnd/resize", func(e ui.Event) {
+		m.Resize()
+	})
+	ui.Handle("/sys/kbd/t", func(ui.Event) {
+		m.Toggle()
+	})
+	ui.Handle("/sys/kbd/", func(ui.Event) {
+		quit <- true
+		ui.StopLoop()
+	})
+	ui.Loop()
+	return nil
+}
+
+// Create a confirmation dialog with a given description string and
+// func to perform if confirmed
+func Confirm(txt string, fn func()) MenuFn {
+	menu := func() MenuFn {
+		ui.DefaultEvtStream.ResetHandlers()
+		defer ui.DefaultEvtStream.ResetHandlers()
+
+		m := menu.NewMenu()
+		m.Selectable = true
+		m.BorderLabel = "Confirm"
+		m.SubText = txt
+
+		items := []menu.Item{
+			menu.Item{Val: "cancel", Label: "[c]ancel"},
+			menu.Item{Val: "yes", Label: "[y]es"},
+		}
+
+		var response bool
+
+		m.AddItems(items...)
+		ui.Render(m)
+
+		yes := func() {
+			response = true
+			ui.StopLoop()
+		}
+
+		no := func() {
+			response = false
+			ui.StopLoop()
+		}
+
+		HandleKeys("up", m.Up)
+		HandleKeys("down", m.Down)
+		HandleKeys("exit", no)
+		ui.Handle("/sys/kbd/c", func(ui.Event) { no() })
+		ui.Handle("/sys/kbd/y", func(ui.Event) { yes() })
+
+		ui.Handle("/sys/kbd/<enter>", func(ui.Event) {
+			switch m.SelectedItem().Val {
+			case "cancel":
+				no()
+			case "yes":
+				yes()
+			}
+		})
+
+		ui.Loop()
+		if response {
+			fn()
+		}
+		return nil
+	}
+	return menu
+}
+
+type toggleLog struct {
+	timestamp time.Time
+	message   string
+}
+
+func (t *toggleLog) Toggle(on bool) string {
+	if on {
+		return fmt.Sprintf("%s %s", t.timestamp.Format("2006-01-02T15:04:05.999Z07:00"), t.message)
+	}
+	return t.message
+}
+
+func logReader(container *container.Container) (logs chan widgets.ToggleText, quit chan bool) {
+
+	logCollector := container.Logs()
+	stream := logCollector.Stream()
+	logs = make(chan widgets.ToggleText)
+	quit = make(chan bool)
+
+	go func() {
+		for {
+			select {
+			case log := <-stream:
+				logs <- &toggleLog{timestamp: log.Timestamp, message: log.Message}
+			case <-quit:
+				logCollector.Stop()
+				close(logs)
+				return
+			}
+		}
+	}()
+	return
+}
+
+func confirmTxt(a, n string) string { return fmt.Sprintf("%s container %s?", a, n) }

models/main.go

@@ -1,4 +1,11 @@
-package metrics
+package models
+
+import "time"
+
+type Log struct {
+	Timestamp time.Time
+	Message   string
+}
 
 type Metrics struct {
 	CPUUtil      int
@@ -24,10 +31,3 @@ func NewMetrics() Metrics {
 		Pids:         -1,
 	}
 }
-
-type Collector interface {
-	Stream() chan Metrics
-	Running() bool
-	Start()
-	Stop()
-}

widgets/header.go

@@ -17,8 +17,8 @@ type CTopHeader struct {
 func NewCTopHeader() *CTopHeader {
 	return &CTopHeader{
 		Time:   headerPar(2, timeStr()),
-		Count:  headerPar(27, "-"),
+		Count:  headerPar(24, "-"),
-		Filter: headerPar(47, ""),
+		Filter: headerPar(40, ""),
 		bg:     headerBg(),
 	}
 }

widgets/input.go

@@ -77,7 +77,7 @@ func (i *Input) KeyPress(e ui.Event) {
 	if len(i.Data) >= i.MaxLen {
 		return
 	}
-	if strings.Index(input_chars, ch) > -1 {
+	if strings.Contains(input_chars, ch) {
 		i.Data += ch
 		i.stream <- i.Data
 		ui.Render(i)

widgets/menu/main.go

@@ -11,6 +11,7 @@ type Padding [2]int // x,y padding
 type Menu struct {
 	ui.Block
 	SortItems   bool   // enable automatic sorting of menu items
+	SubText     string // optional text to display before items
 	TextFgColor ui.Attribute
 	TextBgColor ui.Attribute
 	Selectable  bool
@@ -82,9 +83,19 @@ func (m *Menu) Buffer() ui.Buffer {
 	var cell ui.Cell
 	buf := m.Block.Buffer()
 
+	y := m.Y + m.padding[1]
+
+	if m.SubText != "" {
+		x := m.X + m.padding[0]
+		for i, ch := range m.SubText {
+			cell = ui.Cell{Ch: ch, Fg: m.TextFgColor, Bg: m.TextBgColor}
+			buf.Set(x+i, y, cell)
+		}
+		y += 2
+	}
+
 	for n, item := range m.items {
 		x := m.X + m.padding[0]
-		y := m.Y + m.padding[1]
 		for _, ch := range item.Text() {
 			// invert bg/fg colors on currently selected row
 			if m.Selectable && n == m.cursorPos {
@@ -118,14 +129,22 @@ func (m *Menu) Down() {
 func (m *Menu) calcSize() {
 	m.Width = 7 // minimum width
 
-	items := m.items
+	var height int
 	for _, i := range m.items {
 		s := i.Text()
 		if len(s) > m.Width {
 			m.Width = len(s)
 		}
+		height++
+	}
+
+	if m.SubText != "" {
+		if len(m.SubText) > m.Width {
+			m.Width = len(m.SubText)
+		}
+		height += 2
 	}
 
 	m.Width += (m.padding[0] * 2)
-	m.Height = len(items) + (m.padding[1] * 2)
+	m.Height = height + (m.padding[1] * 2)
 }

widgets/status.go

@@ -0,0 +1,87 @@
+package widgets
+
+import (
+	ui "github.com/gizak/termui"
+)
+
+var (
+	statusHeight = 1
+	statusIter   = 3
+)
+
+type StatusLine struct {
+	Message *ui.Par
+	bg      *ui.Par
+}
+
+func NewStatusLine() *StatusLine {
+	p := ui.NewPar("")
+	p.X = 2
+	p.Border = false
+	p.Height = statusHeight
+	p.Bg = ui.ThemeAttr("header.bg")
+	p.TextFgColor = ui.ThemeAttr("header.fg")
+	p.TextBgColor = ui.ThemeAttr("header.bg")
+	return &StatusLine{
+		Message: p,
+		bg:      statusBg(),
+	}
+}
+
+func (sl *StatusLine) Display() {
+	ui.DefaultEvtStream.ResetHandlers()
+	defer ui.DefaultEvtStream.ResetHandlers()
+
+	iter := statusIter
+	ui.Handle("/sys/kbd/", func(ui.Event) {
+		ui.StopLoop()
+	})
+	ui.Handle("/timer/1s", func(ui.Event) {
+		iter--
+		if iter <= 0 {
+			ui.StopLoop()
+		}
+	})
+
+	ui.Render(sl)
+	ui.Loop()
+}
+
+// change given message on the status line
+func (sl *StatusLine) Show(s string) {
+	sl.Message.TextFgColor = ui.ThemeAttr("header.fg")
+	sl.Message.Text = s
+	sl.Display()
+}
+
+func (sl *StatusLine) ShowErr(s string) {
+	sl.Message.TextFgColor = ui.ThemeAttr("status.danger")
+	sl.Message.Text = s
+	sl.Display()
+}
+
+func (sl *StatusLine) Buffer() ui.Buffer {
+	buf := ui.NewBuffer()
+	buf.Merge(sl.bg.Buffer())
+	buf.Merge(sl.Message.Buffer())
+	return buf
+}
+
+func (sl *StatusLine) Align() {
+	sl.bg.SetWidth(ui.TermWidth() - 1)
+	sl.Message.SetWidth(ui.TermWidth() - 2)
+
+	sl.bg.Y = ui.TermHeight() - 1
+	sl.Message.Y = ui.TermHeight() - 1
+}
+
+func (sl *StatusLine) Height() int { return statusHeight }
+
+func statusBg() *ui.Par {
+	bg := ui.NewPar("")
+	bg.X = 1
+	bg.Height = statusHeight
+	bg.Border = false
+	bg.Bg = ui.ThemeAttr("header.bg")
+	return bg
+}

widgets/view.go

@@ -0,0 +1,124 @@
+package widgets
+
+import (
+	ui "github.com/gizak/termui"
+)
+
+type ToggleText interface {
+	// returns text for toggle on/off
+	Toggle(on bool) string
+}
+
+type TextView struct {
+	ui.Block
+	inputStream <-chan ToggleText
+	render      chan bool
+	toggleState bool
+	Text        []ToggleText // all the text
+	TextOut     []string     // text to be displayed
+	TextFgColor ui.Attribute
+	TextBgColor ui.Attribute
+	padding     Padding
+}
+
+func NewTextView(lines <-chan ToggleText) *TextView {
+	t := &TextView{
+		Block:       *ui.NewBlock(),
+		inputStream: lines,
+		render:      make(chan bool),
+		Text:        []ToggleText{},
+		TextOut:     []string{},
+		TextFgColor: ui.ThemeAttr("menu.text.fg"),
+		TextBgColor: ui.ThemeAttr("menu.text.bg"),
+		padding:     Padding{4, 2},
+	}
+
+	t.BorderFg = ui.ThemeAttr("menu.border.fg")
+	t.BorderLabelFg = ui.ThemeAttr("menu.label.fg")
+	t.Height = ui.TermHeight()
+	t.Width = ui.TermWidth()
+
+	t.readInputLoop()
+	t.renderLoop()
+	return t
+}
+
+// Adjusts text inside this view according to the window size. No need to call ui.Render(...)
+// after calling this method, it is called automatically
+func (t *TextView) Resize() {
+	ui.Clear()
+	t.Height = ui.TermHeight()
+	t.Width = ui.TermWidth()
+	t.render <- true
+}
+
+// Toggles text inside this view. No need to call ui.Render(...) after calling this method,
+// it is called automatically
+func (t *TextView) Toggle() {
+	t.toggleState = !t.toggleState
+	t.render <- true
+}
+
+func (t *TextView) Buffer() ui.Buffer {
+	var cell ui.Cell
+	buf := t.Block.Buffer()
+
+	x := t.Block.X + t.padding[0]
+	y := t.Block.Y + t.padding[1]
+
+	for _, line := range t.TextOut {
+		for _, ch := range line {
+			cell = ui.Cell{Ch: ch, Fg: t.TextFgColor, Bg: t.TextBgColor}
+			buf.Set(x, y, cell)
+			x++
+		}
+		x = t.Block.X + t.padding[0]
+		y++
+	}
+	return buf
+}
+
+func (t *TextView) renderLoop() {
+	go func() {
+		for range t.render {
+			maxWidth := t.Width - (t.padding[0] * 2)
+			height := t.Height - (t.padding[1] * 2)
+			t.TextOut = []string{}
+			for i := len(t.Text) - 1; i >= 0; i-- {
+				lines := splitLine(t.Text[i].Toggle(t.toggleState), maxWidth)
+				t.TextOut = append(lines, t.TextOut...)
+				if len(t.TextOut) > height {
+					t.TextOut = t.TextOut[:height]
+					break
+				}
+			}
+			ui.Render(t)
+		}
+	}()
+}
+
+func (t *TextView) readInputLoop() {
+	go func() {
+		for line := range t.inputStream {
+			t.Text = append(t.Text, line)
+			t.render <- true
+		}
+		close(t.render)
+	}()
+}
+
+func splitLine(line string, lineSize int) []string {
+	if line == "" {
+		return []string{}
+	}
+
+	var lines []string
+	for {
+		if len(line) <= lineSize {
+			lines = append(lines, line)
+			return lines
+		}
+		lines = append(lines, line[:lineSize])
+		line = line[lineSize:]
+	}
+}

widgets/view_test.go

@@ -0,0 +1,35 @@
+package widgets
+
+import "testing"
+
+func TestSplitEmptyLine(t *testing.T) {
+
+	result := splitLine("", 5)
+	if len(result) != 0 {
+		t.Errorf("expected: 0 lines, got: %d", len(result))
+	}
+}
+
+func TestSplitLineShorterThanLimit(t *testing.T) {
+
+	result := splitLine("hello", 7)
+	if len(result) != 1 {
+		t.Errorf("expected: 0 lines, got: %d", len(result))
+	}
+}
+
+func TestSplitLineLongerThanLimit(t *testing.T) {
+
+	result := splitLine("hello", 3)
+	if len(result) != 2 {
+		t.Errorf("expected: 0 lines, got: %d", len(result))
+	}
+}
+
+func TestSplitLineSameAsLimit(t *testing.T) {
+
+	result := splitLine("hello", 5)
+	if len(result) != 1 {
+		t.Errorf("expected: 0 lines, got: %d", len(result))
+	}
+}