648 lines
19 KiB
Go
648 lines
19 KiB
Go
package command
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import (
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"fmt"
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"math"
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"sort"
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"strconv"
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"strings"
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"time"
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humanize "github.com/dustin/go-humanize"
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"github.com/hashicorp/nomad/api"
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"github.com/hashicorp/nomad/api/contexts"
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"github.com/hashicorp/nomad/client"
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"github.com/posener/complete"
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)
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type AllocStatusCommand struct {
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Meta
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}
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func (c *AllocStatusCommand) Help() string {
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helpText := `
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Usage: nomad alloc status [options] <allocation>
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Display information about existing allocations and its tasks. This command can
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be used to inspect the current status of an allocation, including its running
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status, metadata, and verbose failure messages reported by internal
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subsystems.
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General Options:
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` + generalOptionsUsage() + `
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Alloc Status Options:
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-short
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Display short output. Shows only the most recent task event.
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-stats
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Display detailed resource usage statistics.
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-verbose
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Show full information.
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-json
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Output the allocation in its JSON format.
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-t
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Format and display allocation using a Go template.
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`
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return strings.TrimSpace(helpText)
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}
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func (c *AllocStatusCommand) Synopsis() string {
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return "Display allocation status information and metadata"
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}
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func (c *AllocStatusCommand) AutocompleteFlags() complete.Flags {
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return mergeAutocompleteFlags(c.Meta.AutocompleteFlags(FlagSetClient),
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complete.Flags{
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"-short": complete.PredictNothing,
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"-verbose": complete.PredictNothing,
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"-json": complete.PredictNothing,
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"-t": complete.PredictAnything,
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})
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}
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func (c *AllocStatusCommand) AutocompleteArgs() complete.Predictor {
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return complete.PredictFunc(func(a complete.Args) []string {
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client, err := c.Meta.Client()
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if err != nil {
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return nil
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}
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resp, _, err := client.Search().PrefixSearch(a.Last, contexts.Allocs, nil)
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if err != nil {
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return []string{}
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}
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return resp.Matches[contexts.Allocs]
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})
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}
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func (c *AllocStatusCommand) Run(args []string) int {
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var short, displayStats, verbose, json bool
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var tmpl string
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flags := c.Meta.FlagSet("alloc status", FlagSetClient)
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flags.Usage = func() { c.Ui.Output(c.Help()) }
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flags.BoolVar(&short, "short", false, "")
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flags.BoolVar(&verbose, "verbose", false, "")
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flags.BoolVar(&displayStats, "stats", false, "")
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flags.BoolVar(&json, "json", false, "")
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flags.StringVar(&tmpl, "t", "", "")
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if err := flags.Parse(args); err != nil {
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return 1
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}
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// Check that we got exactly one allocation ID
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args = flags.Args()
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// Get the HTTP client
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client, err := c.Meta.Client()
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if err != nil {
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c.Ui.Error(fmt.Sprintf("Error initializing client: %s", err))
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return 1
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}
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// If args not specified but output format is specified, format and output the allocations data list
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if len(args) == 0 && json || len(tmpl) > 0 {
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allocs, _, err := client.Allocations().List(nil)
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if err != nil {
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c.Ui.Error(fmt.Sprintf("Error querying allocations: %v", err))
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return 1
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}
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out, err := Format(json, tmpl, allocs)
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if err != nil {
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c.Ui.Error(err.Error())
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return 1
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}
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c.Ui.Output(out)
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return 0
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}
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if len(args) != 1 {
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c.Ui.Error(c.Help())
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return 1
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}
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allocID := args[0]
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// Truncate the id unless full length is requested
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length := shortId
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if verbose {
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length = fullId
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}
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// Query the allocation info
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if len(allocID) == 1 {
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c.Ui.Error(fmt.Sprintf("Identifier must contain at least two characters."))
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return 1
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}
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allocID = sanitizeUUIDPrefix(allocID)
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allocs, _, err := client.Allocations().PrefixList(allocID)
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if err != nil {
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c.Ui.Error(fmt.Sprintf("Error querying allocation: %v", err))
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return 1
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}
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if len(allocs) == 0 {
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c.Ui.Error(fmt.Sprintf("No allocation(s) with prefix or id %q found", allocID))
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return 1
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}
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if len(allocs) > 1 {
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out := formatAllocListStubs(allocs, verbose, length)
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c.Ui.Output(fmt.Sprintf("Prefix matched multiple allocations\n\n%s", out))
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return 0
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}
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// Prefix lookup matched a single allocation
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alloc, _, err := client.Allocations().Info(allocs[0].ID, nil)
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if err != nil {
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c.Ui.Error(fmt.Sprintf("Error querying allocation: %s", err))
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return 1
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}
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// If output format is specified, format and output the data
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if json || len(tmpl) > 0 {
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out, err := Format(json, tmpl, alloc)
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if err != nil {
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c.Ui.Error(err.Error())
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return 1
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}
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c.Ui.Output(out)
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return 0
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}
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// Format the allocation data
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output, err := formatAllocBasicInfo(alloc, client, length, verbose)
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if err != nil {
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c.Ui.Error(err.Error())
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return 1
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}
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c.Ui.Output(output)
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if short {
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c.shortTaskStatus(alloc)
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} else {
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var statsErr error
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var stats *api.AllocResourceUsage
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stats, statsErr = client.Allocations().Stats(alloc, nil)
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if statsErr != nil {
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c.Ui.Output("")
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if statsErr != api.NodeDownErr {
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c.Ui.Error(fmt.Sprintf("Couldn't retrieve stats (HINT: ensure Client.Advertise.HTTP is set): %v", statsErr))
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} else {
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c.Ui.Output("Omitting resource statistics since the node is down.")
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}
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}
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c.outputTaskDetails(alloc, stats, displayStats)
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}
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// Format the detailed status
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if verbose {
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c.Ui.Output(c.Colorize().Color("\n[bold]Placement Metrics[reset]"))
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c.Ui.Output(formatAllocMetrics(alloc.Metrics, true, " "))
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}
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return 0
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}
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func formatAllocBasicInfo(alloc *api.Allocation, client *api.Client, uuidLength int, verbose bool) (string, error) {
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var formattedCreateTime, formattedModifyTime string
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if verbose {
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formattedCreateTime = formatUnixNanoTime(alloc.CreateTime)
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formattedModifyTime = formatUnixNanoTime(alloc.ModifyTime)
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} else {
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formattedCreateTime = prettyTimeDiff(time.Unix(0, alloc.CreateTime), time.Now())
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formattedModifyTime = prettyTimeDiff(time.Unix(0, alloc.ModifyTime), time.Now())
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}
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basic := []string{
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fmt.Sprintf("ID|%s", limit(alloc.ID, uuidLength)),
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fmt.Sprintf("Eval ID|%s", limit(alloc.EvalID, uuidLength)),
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fmt.Sprintf("Name|%s", alloc.Name),
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fmt.Sprintf("Node ID|%s", limit(alloc.NodeID, uuidLength)),
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fmt.Sprintf("Job ID|%s", alloc.JobID),
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fmt.Sprintf("Job Version|%d", getVersion(alloc.Job)),
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fmt.Sprintf("Client Status|%s", alloc.ClientStatus),
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fmt.Sprintf("Client Description|%s", alloc.ClientDescription),
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fmt.Sprintf("Desired Status|%s", alloc.DesiredStatus),
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fmt.Sprintf("Desired Description|%s", alloc.DesiredDescription),
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fmt.Sprintf("Created|%s", formattedCreateTime),
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fmt.Sprintf("Modified|%s", formattedModifyTime),
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}
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if alloc.DeploymentID != "" {
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health := "unset"
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if alloc.DeploymentStatus != nil && alloc.DeploymentStatus.Healthy != nil {
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if *alloc.DeploymentStatus.Healthy {
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health = "healthy"
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} else {
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health = "unhealthy"
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}
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}
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basic = append(basic,
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fmt.Sprintf("Deployment ID|%s", limit(alloc.DeploymentID, uuidLength)),
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fmt.Sprintf("Deployment Health|%s", health))
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// Check if this allocation is a canary
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deployment, _, err := client.Deployments().Info(alloc.DeploymentID, nil)
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if err != nil {
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return "", fmt.Errorf("Error querying deployment %q: %s", alloc.DeploymentID, err)
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}
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canary := false
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if state, ok := deployment.TaskGroups[alloc.TaskGroup]; ok {
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for _, id := range state.PlacedCanaries {
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if id == alloc.ID {
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canary = true
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break
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}
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}
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}
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if canary {
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basic = append(basic, fmt.Sprintf("Canary|%v", true))
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}
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}
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if alloc.RescheduleTracker != nil && len(alloc.RescheduleTracker.Events) > 0 {
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attempts, total := alloc.RescheduleInfo(time.Unix(0, alloc.ModifyTime))
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// Show this section only if the reschedule policy limits the number of attempts
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if total > 0 {
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reschedInfo := fmt.Sprintf("Reschedule Attempts|%d/%d", attempts, total)
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basic = append(basic, reschedInfo)
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}
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}
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if alloc.NextAllocation != "" {
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basic = append(basic,
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fmt.Sprintf("Replacement Alloc ID|%s", limit(alloc.NextAllocation, uuidLength)))
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}
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if alloc.FollowupEvalID != "" {
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nextEvalTime := futureEvalTimePretty(alloc.FollowupEvalID, client)
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if nextEvalTime != "" {
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basic = append(basic,
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fmt.Sprintf("Reschedule Eligibility|%s", nextEvalTime))
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}
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}
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if verbose {
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basic = append(basic,
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fmt.Sprintf("Evaluated Nodes|%d", alloc.Metrics.NodesEvaluated),
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fmt.Sprintf("Filtered Nodes|%d", alloc.Metrics.NodesFiltered),
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fmt.Sprintf("Exhausted Nodes|%d", alloc.Metrics.NodesExhausted),
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fmt.Sprintf("Allocation Time|%s", alloc.Metrics.AllocationTime),
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fmt.Sprintf("Failures|%d", alloc.Metrics.CoalescedFailures))
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}
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return formatKV(basic), nil
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}
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// futureEvalTimePretty returns when the eval is eligible to reschedule
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// relative to current time, based on the WaitUntil field
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func futureEvalTimePretty(evalID string, client *api.Client) string {
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evaluation, _, err := client.Evaluations().Info(evalID, nil)
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// Eval time is not a critical output,
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// don't return it on errors, if its not set or already in the past
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if err != nil || evaluation.WaitUntil.IsZero() || time.Now().After(evaluation.WaitUntil) {
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return ""
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}
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return prettyTimeDiff(evaluation.WaitUntil, time.Now())
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}
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// outputTaskDetails prints task details for each task in the allocation,
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// optionally printing verbose statistics if displayStats is set
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func (c *AllocStatusCommand) outputTaskDetails(alloc *api.Allocation, stats *api.AllocResourceUsage, displayStats bool) {
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for task := range c.sortedTaskStateIterator(alloc.TaskStates) {
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state := alloc.TaskStates[task]
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c.Ui.Output(c.Colorize().Color(fmt.Sprintf("\n[bold]Task %q is %q[reset]", task, state.State)))
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c.outputTaskResources(alloc, task, stats, displayStats)
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c.Ui.Output("")
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c.outputTaskStatus(state)
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}
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}
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func formatTaskTimes(t time.Time) string {
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if t.IsZero() {
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return "N/A"
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}
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return formatTime(t)
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}
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// outputTaskStatus prints out a list of the most recent events for the given
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// task state.
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func (c *AllocStatusCommand) outputTaskStatus(state *api.TaskState) {
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basic := []string{
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fmt.Sprintf("Started At|%s", formatTaskTimes(state.StartedAt)),
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fmt.Sprintf("Finished At|%s", formatTaskTimes(state.FinishedAt)),
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fmt.Sprintf("Total Restarts|%d", state.Restarts),
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fmt.Sprintf("Last Restart|%s", formatTaskTimes(state.LastRestart))}
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c.Ui.Output("Task Events:")
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c.Ui.Output(formatKV(basic))
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c.Ui.Output("")
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c.Ui.Output("Recent Events:")
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events := make([]string, len(state.Events)+1)
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events[0] = "Time|Type|Description"
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size := len(state.Events)
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for i, event := range state.Events {
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msg := event.DisplayMessage
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if msg == "" {
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msg = buildDisplayMessage(event)
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}
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formattedTime := formatUnixNanoTime(event.Time)
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events[size-i] = fmt.Sprintf("%s|%s|%s", formattedTime, event.Type, msg)
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// Reverse order so we are sorted by time
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}
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c.Ui.Output(formatList(events))
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}
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func buildDisplayMessage(event *api.TaskEvent) string {
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// Build up the description based on the event type.
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var desc string
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switch event.Type {
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case api.TaskSetup:
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desc = event.Message
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case api.TaskStarted:
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desc = "Task started by client"
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case api.TaskReceived:
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desc = "Task received by client"
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case api.TaskFailedValidation:
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if event.ValidationError != "" {
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desc = event.ValidationError
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} else {
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desc = "Validation of task failed"
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}
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case api.TaskSetupFailure:
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if event.SetupError != "" {
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desc = event.SetupError
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} else {
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desc = "Task setup failed"
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}
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case api.TaskDriverFailure:
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if event.DriverError != "" {
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desc = event.DriverError
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} else {
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desc = "Failed to start task"
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}
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case api.TaskDownloadingArtifacts:
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desc = "Client is downloading artifacts"
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case api.TaskArtifactDownloadFailed:
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if event.DownloadError != "" {
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desc = event.DownloadError
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} else {
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desc = "Failed to download artifacts"
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}
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case api.TaskKilling:
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if event.KillReason != "" {
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desc = fmt.Sprintf("Killing task: %v", event.KillReason)
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} else if event.KillTimeout != 0 {
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desc = fmt.Sprintf("Sent interrupt. Waiting %v before force killing", event.KillTimeout)
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} else {
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desc = "Sent interrupt"
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}
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case api.TaskKilled:
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if event.KillError != "" {
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desc = event.KillError
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} else {
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desc = "Task successfully killed"
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}
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case api.TaskTerminated:
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var parts []string
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parts = append(parts, fmt.Sprintf("Exit Code: %d", event.ExitCode))
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if event.Signal != 0 {
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parts = append(parts, fmt.Sprintf("Signal: %d", event.Signal))
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}
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if event.Message != "" {
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parts = append(parts, fmt.Sprintf("Exit Message: %q", event.Message))
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}
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desc = strings.Join(parts, ", ")
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case api.TaskRestarting:
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in := fmt.Sprintf("Task restarting in %v", time.Duration(event.StartDelay))
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if event.RestartReason != "" && event.RestartReason != client.ReasonWithinPolicy {
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desc = fmt.Sprintf("%s - %s", event.RestartReason, in)
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} else {
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desc = in
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}
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case api.TaskNotRestarting:
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if event.RestartReason != "" {
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desc = event.RestartReason
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} else {
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desc = "Task exceeded restart policy"
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}
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case api.TaskSiblingFailed:
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if event.FailedSibling != "" {
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desc = fmt.Sprintf("Task's sibling %q failed", event.FailedSibling)
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} else {
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desc = "Task's sibling failed"
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}
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case api.TaskSignaling:
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sig := event.TaskSignal
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reason := event.TaskSignalReason
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if sig == "" && reason == "" {
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desc = "Task being sent a signal"
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} else if sig == "" {
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desc = reason
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} else if reason == "" {
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desc = fmt.Sprintf("Task being sent signal %v", sig)
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} else {
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desc = fmt.Sprintf("Task being sent signal %v: %v", sig, reason)
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}
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case api.TaskRestartSignal:
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if event.RestartReason != "" {
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desc = event.RestartReason
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} else {
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desc = "Task signaled to restart"
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}
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case api.TaskDriverMessage:
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desc = event.DriverMessage
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case api.TaskLeaderDead:
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desc = "Leader Task in Group dead"
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default:
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desc = event.Message
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}
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return desc
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}
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// outputTaskResources prints the task resources for the passed task and if
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// displayStats is set, verbose resource usage statistics
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func (c *AllocStatusCommand) outputTaskResources(alloc *api.Allocation, task string, stats *api.AllocResourceUsage, displayStats bool) {
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resource, ok := alloc.TaskResources[task]
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if !ok {
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return
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}
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c.Ui.Output("Task Resources")
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var addr []string
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for _, nw := range resource.Networks {
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ports := append(nw.DynamicPorts, nw.ReservedPorts...)
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for _, port := range ports {
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addr = append(addr, fmt.Sprintf("%v: %v:%v\n", port.Label, nw.IP, port.Value))
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}
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}
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var resourcesOutput []string
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resourcesOutput = append(resourcesOutput, "CPU|Memory|Disk|IOPS|Addresses")
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firstAddr := ""
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if len(addr) > 0 {
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firstAddr = addr[0]
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}
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// Display the rolled up stats. If possible prefer the live statistics
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cpuUsage := strconv.Itoa(*resource.CPU)
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memUsage := humanize.IBytes(uint64(*resource.MemoryMB * bytesPerMegabyte))
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if stats != nil {
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if ru, ok := stats.Tasks[task]; ok && ru != nil && ru.ResourceUsage != nil {
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if cs := ru.ResourceUsage.CpuStats; cs != nil {
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cpuUsage = fmt.Sprintf("%v/%v", math.Floor(cs.TotalTicks), cpuUsage)
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}
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if ms := ru.ResourceUsage.MemoryStats; ms != nil {
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memUsage = fmt.Sprintf("%v/%v", humanize.IBytes(ms.RSS), memUsage)
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}
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}
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}
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resourcesOutput = append(resourcesOutput, fmt.Sprintf("%v MHz|%v|%v|%v|%v",
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cpuUsage,
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memUsage,
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humanize.IBytes(uint64(*alloc.Resources.DiskMB*bytesPerMegabyte)),
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*resource.IOPS,
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firstAddr))
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for i := 1; i < len(addr); i++ {
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resourcesOutput = append(resourcesOutput, fmt.Sprintf("||||%v", addr[i]))
|
|
}
|
|
c.Ui.Output(formatListWithSpaces(resourcesOutput))
|
|
|
|
if stats != nil {
|
|
if ru, ok := stats.Tasks[task]; ok && ru != nil && displayStats && ru.ResourceUsage != nil {
|
|
c.Ui.Output("")
|
|
c.outputVerboseResourceUsage(task, ru.ResourceUsage)
|
|
}
|
|
}
|
|
}
|
|
|
|
// outputVerboseResourceUsage outputs the verbose resource usage for the passed
|
|
// task
|
|
func (c *AllocStatusCommand) outputVerboseResourceUsage(task string, resourceUsage *api.ResourceUsage) {
|
|
memoryStats := resourceUsage.MemoryStats
|
|
cpuStats := resourceUsage.CpuStats
|
|
if memoryStats != nil && len(memoryStats.Measured) > 0 {
|
|
c.Ui.Output("Memory Stats")
|
|
|
|
// Sort the measured stats
|
|
sort.Strings(memoryStats.Measured)
|
|
|
|
var measuredStats []string
|
|
for _, measured := range memoryStats.Measured {
|
|
switch measured {
|
|
case "RSS":
|
|
measuredStats = append(measuredStats, humanize.IBytes(memoryStats.RSS))
|
|
case "Cache":
|
|
measuredStats = append(measuredStats, humanize.IBytes(memoryStats.Cache))
|
|
case "Swap":
|
|
measuredStats = append(measuredStats, humanize.IBytes(memoryStats.Swap))
|
|
case "Max Usage":
|
|
measuredStats = append(measuredStats, humanize.IBytes(memoryStats.MaxUsage))
|
|
case "Kernel Usage":
|
|
measuredStats = append(measuredStats, humanize.IBytes(memoryStats.KernelUsage))
|
|
case "Kernel Max Usage":
|
|
measuredStats = append(measuredStats, humanize.IBytes(memoryStats.KernelMaxUsage))
|
|
}
|
|
}
|
|
|
|
out := make([]string, 2)
|
|
out[0] = strings.Join(memoryStats.Measured, "|")
|
|
out[1] = strings.Join(measuredStats, "|")
|
|
c.Ui.Output(formatList(out))
|
|
c.Ui.Output("")
|
|
}
|
|
|
|
if cpuStats != nil && len(cpuStats.Measured) > 0 {
|
|
c.Ui.Output("CPU Stats")
|
|
|
|
// Sort the measured stats
|
|
sort.Strings(cpuStats.Measured)
|
|
|
|
var measuredStats []string
|
|
for _, measured := range cpuStats.Measured {
|
|
switch measured {
|
|
case "Percent":
|
|
percent := strconv.FormatFloat(cpuStats.Percent, 'f', 2, 64)
|
|
measuredStats = append(measuredStats, fmt.Sprintf("%v%%", percent))
|
|
case "Throttled Periods":
|
|
measuredStats = append(measuredStats, fmt.Sprintf("%v", cpuStats.ThrottledPeriods))
|
|
case "Throttled Time":
|
|
measuredStats = append(measuredStats, fmt.Sprintf("%v", cpuStats.ThrottledTime))
|
|
case "User Mode":
|
|
percent := strconv.FormatFloat(cpuStats.UserMode, 'f', 2, 64)
|
|
measuredStats = append(measuredStats, fmt.Sprintf("%v%%", percent))
|
|
case "System Mode":
|
|
percent := strconv.FormatFloat(cpuStats.SystemMode, 'f', 2, 64)
|
|
measuredStats = append(measuredStats, fmt.Sprintf("%v%%", percent))
|
|
}
|
|
}
|
|
|
|
out := make([]string, 2)
|
|
out[0] = strings.Join(cpuStats.Measured, "|")
|
|
out[1] = strings.Join(measuredStats, "|")
|
|
c.Ui.Output(formatList(out))
|
|
}
|
|
}
|
|
|
|
// shortTaskStatus prints out the current state of each task.
|
|
func (c *AllocStatusCommand) shortTaskStatus(alloc *api.Allocation) {
|
|
tasks := make([]string, 0, len(alloc.TaskStates)+1)
|
|
tasks = append(tasks, "Name|State|Last Event|Time")
|
|
for task := range c.sortedTaskStateIterator(alloc.TaskStates) {
|
|
state := alloc.TaskStates[task]
|
|
lastState := state.State
|
|
var lastEvent, lastTime string
|
|
|
|
l := len(state.Events)
|
|
if l != 0 {
|
|
last := state.Events[l-1]
|
|
lastEvent = last.Type
|
|
lastTime = formatUnixNanoTime(last.Time)
|
|
}
|
|
|
|
tasks = append(tasks, fmt.Sprintf("%s|%s|%s|%s",
|
|
task, lastState, lastEvent, lastTime))
|
|
}
|
|
|
|
c.Ui.Output(c.Colorize().Color("\n[bold]Tasks[reset]"))
|
|
c.Ui.Output(formatList(tasks))
|
|
}
|
|
|
|
// sortedTaskStateIterator is a helper that takes the task state map and returns a
|
|
// channel that returns the keys in a sorted order.
|
|
func (c *AllocStatusCommand) sortedTaskStateIterator(m map[string]*api.TaskState) <-chan string {
|
|
output := make(chan string, len(m))
|
|
keys := make([]string, len(m))
|
|
i := 0
|
|
for k := range m {
|
|
keys[i] = k
|
|
i++
|
|
}
|
|
sort.Strings(keys)
|
|
|
|
for _, key := range keys {
|
|
output <- key
|
|
}
|
|
|
|
close(output)
|
|
return output
|
|
}
|