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|
package main
import (
"fmt"
"os"
"os/signal"
"syscall"
"time"
"github.com/docker/cli/cli-plugins/manager"
"github.com/docker/cli/cli-plugins/plugin"
"github.com/docker/cli/cli/command"
"github.com/spf13/cobra"
)
func main() {
plugin.Run(RootCmd, manager.Metadata{
SchemaVersion: "0.1.0",
Vendor: "Docker Inc.",
Version: "test",
})
}
func RootCmd(dockerCli command.Cli) *cobra.Command {
cmd := cobra.Command{
Use: "presocket",
Short: "testing plugin that does not connect to the socket",
// override PersistentPreRunE so that the plugin default
// PersistentPreRunE doesn't run, simulating a plugin built
// with a pre-socket-communication version of the CLI
PersistentPreRunE: func(cmd *cobra.Command, args []string) error {
return nil
},
}
cmd.AddCommand(&cobra.Command{
Use: "test-no-socket",
Short: "test command that runs until it receives a SIGINT",
RunE: func(cmd *cobra.Command, args []string) error {
go func() {
<-cmd.Context().Done()
fmt.Fprintln(dockerCli.Out(), "context cancelled")
os.Exit(2)
}()
signalCh := make(chan os.Signal, 10)
signal.Notify(signalCh, syscall.SIGINT, syscall.SIGTERM)
go func() {
for range signalCh {
fmt.Fprintln(dockerCli.Out(), "received SIGINT")
}
}()
<-time.After(3 * time.Second)
fmt.Fprintln(dockerCli.Err(), "exit after 3 seconds")
return nil
},
})
cmd.AddCommand(&cobra.Command{
Use: "test-socket",
Short: "test command that runs until it receives a SIGINT",
PreRunE: func(cmd *cobra.Command, args []string) error {
return plugin.PersistentPreRunE(cmd, args)
},
RunE: func(cmd *cobra.Command, args []string) error {
go func() {
<-cmd.Context().Done()
fmt.Fprintln(dockerCli.Out(), "context cancelled")
os.Exit(2)
}()
signalCh := make(chan os.Signal, 10)
signal.Notify(signalCh, syscall.SIGINT, syscall.SIGTERM)
go func() {
for range signalCh {
fmt.Fprintln(dockerCli.Out(), "received SIGINT")
}
}()
<-time.After(3 * time.Second)
fmt.Fprintln(dockerCli.Err(), "exit after 3 seconds")
return nil
},
})
cmd.AddCommand(&cobra.Command{
Use: "test-socket-ignore-context",
Short: "test command that runs until it receives a SIGINT",
PreRunE: func(cmd *cobra.Command, args []string) error {
return plugin.PersistentPreRunE(cmd, args)
},
RunE: func(cmd *cobra.Command, args []string) error {
signalCh := make(chan os.Signal, 10)
signal.Notify(signalCh, syscall.SIGINT, syscall.SIGTERM)
go func() {
for range signalCh {
fmt.Fprintln(dockerCli.Out(), "received SIGINT")
}
}()
<-time.After(3 * time.Second)
fmt.Fprintln(dockerCli.Err(), "exit after 3 seconds")
return nil
},
})
cmd.AddCommand(&cobra.Command{
Use: "tty",
Short: "test command that attempts to read from the TTY",
RunE: func(cmd *cobra.Command, args []string) error {
done := make(chan struct{})
go func() {
b := make([]byte, 1)
_, _ = dockerCli.In().Read(b)
done <- struct{}{}
}()
select {
case <-done:
case <-time.After(2 * time.Second):
fmt.Fprint(dockerCli.Err(), "timeout after 2 seconds")
}
return nil
},
})
return &cmd
}
|
