/
cli.go
427 lines (373 loc) · 11.5 KB
/
cli.go
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package crane
import (
"fmt"
"os"
"strings"
"text/tabwriter"
"github.com/alecthomas/kingpin"
)
var cfg Config
var allowed []string
var (
app = kingpin.New("crane", "Lift containers with ease").Interspersed(false).DefaultEnvars()
verboseFlag = app.Flag("verbose", "Enable verbose output.").Short('v').Bool()
dryRunFlag = app.Flag("dry-run", "Dry run (implicit verbose, no side effects).").Bool()
configFlag = app.Flag(
"config",
"Location of config file.",
).Short('c').PlaceHolder("~/crane.yaml").String()
overrideFlag = app.Flag(
"override",
"Location of override file.",
).String()
prefixFlag = app.Flag(
"prefix",
"Container prefix.",
).Short('p').String()
excludeFlag = app.Flag(
"exclude",
"Exclude group or container. Can be repeated.",
).Short('e').PlaceHolder("container|group").Strings()
onlyFlag = app.Flag(
"only",
"Include only group or container.",
).Short('o').PlaceHolder("container|group").String()
tagFlag = app.Flag(
"tag",
"Override image tags.",
).OverrideDefaultFromEnvar("CRANE_TAG").String()
liftCommand = app.Command(
"lift",
"Build or pull images if they don't exist, then run or start the containers.",
)
liftNoCacheFlag = liftCommand.Flag(
"no-cache",
"Build the image without any cache.",
).Short('n').Bool()
liftParallelFlag = liftCommand.Flag(
"parallel",
"Define how many containers are provisioned in parallel.",
).Short('l').Default("1").Int()
liftTargetArg = liftCommand.Arg("target", "Target of command").String()
liftCmdArg = liftCommand.Arg("cmd", "Command for container").Strings()
versionCommand = app.Command(
"version",
"Displays the version of Crane.",
)
statsCommand = app.Command(
"stats",
"Displays statistics about containers.",
)
statsNoStreamFlag = statsCommand.Flag(
"no-stream",
"Disable stats streaming (Docker >= 1.7).",
).Short('n').Bool()
statsTargetArg = statsCommand.Arg("target", "Target of command").String()
statusCommand = app.Command(
"status",
"Displays status of containers.",
)
noTruncFlag = liftCommand.Flag(
"no-trunc",
"Don't truncate output.",
).Bool()
statusTargetArg = statusCommand.Arg("target", "Target of command").String()
pushCommand = app.Command(
"push",
"Push the containers to the registry.",
)
pushTargetArg = pushCommand.Arg("target", "Target of command").String()
pauseCommand = app.Command(
"pause",
"Pause the containers.",
)
pauseTargetArg = pauseCommand.Arg("target", "Target of command").String()
unpauseCommand = app.Command(
"unpause",
"Unpause the containers.",
)
unpauseTargetArg = unpauseCommand.Arg("target", "Target of command").String()
startCommand = app.Command(
"start",
"Start the containers.",
)
startTargetArg = startCommand.Arg("target", "Target of command").String()
stopCommand = app.Command(
"stop",
"Stop the containers.",
)
stopTargetArg = stopCommand.Arg("target", "Target of command").String()
killCommand = app.Command(
"kill",
"Kill the containers.",
)
killTargetArg = killCommand.Arg("target", "Target of command").String()
execCommand = app.Command(
"exec",
"Execute command in the container(s).",
)
execTargetArg = execCommand.Arg("target", "Target of command").String()
execCmdArg = execCommand.Arg("cmd", "Command for container").Strings()
rmCommand = app.Command(
"rm",
"Remove the containers.",
)
forceRmFlag = rmCommand.Flag(
"force",
"Kill containers if they are running first.",
).Short('f').Bool()
rmTargetArg = rmCommand.Arg("target", "Target of command").String()
runCommand = app.Command(
"run",
"Run the containers.",
)
runTargetArg = runCommand.Arg("target", "Target of command").String()
runCmdArg = runCommand.Arg("cmd", "Command for container").Strings()
createCommand = app.Command(
"create",
"Create the containers.",
)
createTargetArg = createCommand.Arg("target", "Target of command").String()
createCmdArg = createCommand.Arg("cmd", "Command for container").Strings()
provisionCommand = app.Command(
"provision",
"Build or pull images.",
)
provisionNoCacheFlag = provisionCommand.Flag(
"no-cache",
"Build the image without any cache.",
).Short('n').Bool()
provisionParallelFlag = provisionCommand.Flag(
"parallel",
"Define how many containers are provisioned in parallel.",
).Short('l').Default("1").Int()
provisionTargetArg = provisionCommand.Arg("target", "Target of command").String()
pullCommand = app.Command(
"pull",
"Pull images.",
)
pullTargetArg = pullCommand.Arg("target", "Target of command").String()
logsCommand = app.Command(
"logs",
"Display container logs.",
)
followFlag = logsCommand.Flag(
"follow",
"Follow log output.",
).Short('f').Bool()
tailFlag = logsCommand.Flag(
"tail",
"Output the specified number of lines at the end of logs.",
).String()
timestampsFlag = logsCommand.Flag(
"timestamps",
"Show timestamps.",
).Short('t').Bool()
colorizeFlag = logsCommand.Flag(
"colorize",
"Output the lines with one color per container.",
).Short('z').Bool()
sinceFlag = logsCommand.Flag(
"since",
"Show logs since timestamp (Docker >= 1.7).",
).String()
logsTargetArg = logsCommand.Arg("target", "Target of command").String()
generateCommand = app.Command(
"generate",
"Generate files by passing the config to a given template.",
)
templateFlag = generateCommand.Flag(
"template",
"Template to use.",
).Short('t').String()
outputFlag = generateCommand.Flag(
"output",
"The file(s) to write the output to.",
).Short('O').String()
generateTargetArg = generateCommand.Arg("target", "Target of command").String()
syncCommand = app.Command(
"mac-sync",
"Docker for Mac sync",
)
syncStartCommand = syncCommand.Command(
"start",
"Start Docker for Mac sync",
)
syncStartDebugFlag = syncStartCommand.Flag("debug", "Debug mode (verbose and in foreground)").Bool()
syncStartVolumeArg = syncStartCommand.Arg("volume", "Folders to sync").String()
syncStopCommand = syncCommand.Command(
"stop",
"Stop Docker for Mac sync",
)
syncStopVolumeArg = syncStopCommand.Arg("volume", "Folders to sync").String()
syncStatusCommand = syncCommand.Command(
"status",
"Status of Docker for Mac syncs",
)
)
func isVerbose() bool {
return *verboseFlag || *dryRunFlag || *syncStartDebugFlag
}
func isDryRun() bool {
return *dryRunFlag
}
func commandAction(targetFlag string, wrapped func(unitOfWork *UnitOfWork), mightStartRelated bool) {
cfg = NewConfig(*configFlag, *overrideFlag, *prefixFlag, *tagFlag)
allowed = allowedContainers(*excludeFlag, *onlyFlag)
dependencyMap := cfg.DependencyMap()
target, err := NewTarget(dependencyMap, targetFlag)
if err != nil {
panic(StatusError{err, 78})
}
unitOfWork, err := NewUnitOfWork(dependencyMap, target.all())
if err != nil {
panic(StatusError{err, 78})
}
if isVerbose() {
printInfof("Command will be applied to: %s", strings.Join(unitOfWork.targeted, ", "))
if mightStartRelated {
associated := unitOfWork.Associated()
if len(associated) > 0 {
printInfof("\nIf needed, also starts containers: %s", strings.Join(associated, ", "))
}
requiredNetworks := unitOfWork.RequiredNetworks()
if len(requiredNetworks) > 0 {
printInfof("\nIf needed, also creates networks: %s", strings.Join(requiredNetworks, ", "))
}
requiredVolumes := unitOfWork.RequiredVolumes()
if len(requiredVolumes) > 0 {
printInfof("\nIf needed, also creates volumes: %s", strings.Join(requiredVolumes, ", "))
}
}
fmt.Printf("\n\n")
}
wrapped(unitOfWork)
}
func allowedContainers(excludedReference []string, onlyReference string) (containers []string) {
allContainers := []string{}
if len(onlyReference) == 0 {
for name := range cfg.ContainerMap() {
allContainers = append(allContainers, name)
}
} else {
allContainers = cfg.ContainersForReference(onlyReference)
}
excludedContainers := []string{}
for _, reference := range excludedReference {
excludedContainers = append(excludedContainers, cfg.ContainersForReference(reference)...)
}
for _, name := range allContainers {
if !includes(excludedContainers, name) {
containers = append(containers, name)
}
}
return
}
func runCli() {
switch kingpin.MustParse(app.Parse(os.Args[1:])) {
case liftCommand.FullCommand():
commandAction(*liftTargetArg, func(uow *UnitOfWork) {
uow.Lift(*liftCmdArg, *liftNoCacheFlag, *liftParallelFlag)
}, true)
case versionCommand.FullCommand():
fmt.Println("v2.11.0")
case statsCommand.FullCommand():
commandAction(*statsTargetArg, func(uow *UnitOfWork) {
uow.Stats(*statsNoStreamFlag)
}, false)
case statusCommand.FullCommand():
commandAction(*statusTargetArg, func(uow *UnitOfWork) {
uow.Status(*noTruncFlag)
}, false)
case pushCommand.FullCommand():
commandAction(*pushTargetArg, func(uow *UnitOfWork) {
uow.Push()
}, false)
case unpauseCommand.FullCommand():
commandAction(*unpauseTargetArg, func(uow *UnitOfWork) {
uow.Unpause()
}, false)
case pauseCommand.FullCommand():
commandAction(*pauseTargetArg, func(uow *UnitOfWork) {
uow.Pause()
}, false)
case startCommand.FullCommand():
commandAction(*startTargetArg, func(uow *UnitOfWork) {
uow.Start()
}, true)
case stopCommand.FullCommand():
commandAction(*stopTargetArg, func(uow *UnitOfWork) {
uow.Stop()
}, false)
case killCommand.FullCommand():
commandAction(*killTargetArg, func(uow *UnitOfWork) {
uow.Kill()
}, false)
case execCommand.FullCommand():
commandAction(*execTargetArg, func(uow *UnitOfWork) {
uow.Exec(*execCmdArg)
}, false)
case rmCommand.FullCommand():
commandAction(*rmTargetArg, func(uow *UnitOfWork) {
uow.Rm(*forceRmFlag)
}, false)
case runCommand.FullCommand():
commandAction(*runTargetArg, func(uow *UnitOfWork) {
uow.Run(*runCmdArg)
}, true)
case createCommand.FullCommand():
commandAction(*createTargetArg, func(uow *UnitOfWork) {
uow.Create(*createCmdArg)
}, true)
case provisionCommand.FullCommand():
commandAction(*provisionTargetArg, func(uow *UnitOfWork) {
uow.Provision(*provisionNoCacheFlag, *provisionParallelFlag)
}, false)
case pullCommand.FullCommand():
commandAction(*pullTargetArg, func(uow *UnitOfWork) {
uow.PullImage()
}, false)
case logsCommand.FullCommand():
commandAction(*logsTargetArg, func(uow *UnitOfWork) {
uow.Logs(*followFlag, *timestampsFlag, *tailFlag, *colorizeFlag, *sinceFlag)
}, false)
case generateCommand.FullCommand():
if len(*templateFlag) == 0 {
printErrorf("ERROR: No template specified. The flag `--template` is required.\n")
return
}
commandAction(*generateTargetArg, func(uow *UnitOfWork) {
uow.Generate(*templateFlag, *outputFlag)
}, false)
case syncStartCommand.FullCommand():
cfg = NewConfig(*configFlag, *overrideFlag, *prefixFlag, *tagFlag)
sync := cfg.MacSync(*syncStartVolumeArg)
if sync == nil {
printErrorf("ERROR: No such sync configured: %s.", *syncStartVolumeArg)
return
}
sync.Start(*syncStartDebugFlag)
case syncStopCommand.FullCommand():
cfg = NewConfig(*configFlag, *overrideFlag, *prefixFlag, *tagFlag)
sync := cfg.MacSync(*syncStopVolumeArg)
if sync == nil {
printErrorf("ERROR: No such sync configured: %s.", *syncStartVolumeArg)
return
}
sync.Stop()
case syncStatusCommand.FullCommand():
cfg = NewConfig(*configFlag, *overrideFlag, *prefixFlag, *tagFlag)
w := new(tabwriter.Writer)
w.Init(os.Stdout, 0, 8, 1, '\t', 0)
fmt.Fprintln(w, "VOLUME\tCONTAINER\tSTATUS")
for _, name := range cfg.MacSyncNames() {
s := cfg.MacSync(name)
syncContainerName := "-"
if s.Exists() {
syncContainerName = s.ContainerName()
}
fmt.Fprintf(w, "%s\n", s.Volume()+"\t"+syncContainerName+"\t"+s.Status())
}
w.Flush()
}
}