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status-get.go
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status-get.go
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// Copyright 2015 Canonical Ltd.
// Licensed under the AGPLv3, see LICENCE file for details.
package jujuc
import (
"github.com/juju/cmd"
"github.com/juju/errors"
"github.com/juju/gnuflag"
jujucmd "github.com/juju/juju/cmd"
"github.com/juju/juju/core/status"
)
// StatusGetCommand implements the status-get command.
type StatusGetCommand struct {
cmd.CommandBase
ctx Context
includeData bool
applicationWide bool
out cmd.Output
}
func NewStatusGetCommand(ctx Context) (cmd.Command, error) {
return &StatusGetCommand{ctx: ctx}, nil
}
func (c *StatusGetCommand) Info() *cmd.Info {
doc := `
By default, only the status value is printed.
If the --include-data flag is passed, the associated data are printed also.
`
return jujucmd.Info(&cmd.Info{
Name: "status-get",
Args: "[--include-data] [--application]",
Purpose: "print status information",
Doc: doc,
})
}
func (c *StatusGetCommand) SetFlags(f *gnuflag.FlagSet) {
c.out.AddFlags(f, "smart", cmd.DefaultFormatters.Formatters())
f.BoolVar(&c.includeData, "include-data", false, "print all status data")
f.BoolVar(&c.applicationWide, "application", false, "print status for all units of this application if this unit is the leader")
}
func (c *StatusGetCommand) Init(args []string) error {
return cmd.CheckEmpty(args)
}
// StatusInfo is a record of the status information for a application or a unit's workload.
type StatusInfo struct {
Tag string
Status string
Info string
Data map[string]interface{}
}
// ApplicationStatusInfo holds StatusInfo for an Application and all its Units.
type ApplicationStatusInfo struct {
Application StatusInfo
Units []StatusInfo
}
func toDetails(info StatusInfo, includeData bool) map[string]interface{} {
details := make(map[string]interface{})
details["status"] = info.Status
if includeData {
data := make(map[string]interface{})
for k, v := range info.Data {
data[k] = v
}
details["status-data"] = data
details["message"] = info.Info
}
return details
}
func (c *StatusGetCommand) ApplicationStatus(ctx *cmd.Context) error {
applicationStatus, err := c.ctx.ApplicationStatus()
if err != nil {
if errors.IsNotImplemented(err) {
return c.out.Write(ctx, status.Unknown)
}
return errors.Annotatef(err, "finding application status")
}
if !c.includeData && c.out.Name() == "smart" {
return c.out.Write(ctx, applicationStatus.Application.Status)
}
statusDetails := make(map[string]interface{})
details := toDetails(applicationStatus.Application, c.includeData)
units := make(map[string]interface{}, len(applicationStatus.Units))
for _, unit := range applicationStatus.Units {
units[unit.Tag] = toDetails(unit, c.includeData)
}
details["units"] = units
statusDetails["application-status"] = details
c.out.Write(ctx, statusDetails)
return nil
}
func (c *StatusGetCommand) unitOrApplicationStatus(ctx *cmd.Context) error {
var err error
if c.applicationWide {
return c.ApplicationStatus(ctx)
}
unitStatus, err := c.ctx.UnitStatus()
if err != nil {
if errors.IsNotImplemented(err) {
return c.out.Write(ctx, status.Unknown)
}
return errors.Annotatef(err, "finding workload status")
}
if !c.includeData && c.out.Name() == "smart" {
return c.out.Write(ctx, unitStatus.Status)
}
c.out.Write(ctx, toDetails(*unitStatus, c.includeData))
return nil
}
func (c *StatusGetCommand) Run(ctx *cmd.Context) error {
return c.unitOrApplicationStatus(ctx)
}