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logs.go
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logs.go
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// SPDX-License-Identifier: BSD-3-Clause
// Copyright (c) 2022, Unikraft GmbH and The KraftKit Authors.
// Licensed under the BSD-3-Clause License (the "License").
// You may not use this file except in compliance with the License.
package logs
import (
"context"
"fmt"
"os"
"github.com/MakeNowJust/heredoc"
"github.com/spf13/cobra"
kraftcloud "sdk.kraft.cloud"
"kraftkit.sh/cmdfactory"
"kraftkit.sh/config"
"kraftkit.sh/internal/cli/kraft/cloud/utils"
"kraftkit.sh/iostreams"
"kraftkit.sh/log"
)
type LogOptions struct {
Tail int `local:"true" long:"tail" short:"n" usage:"Lines of recent logs to display" default:"-1"`
metro string
}
// Log retrieves the console output from a KraftCloud instance.
func Log(ctx context.Context, opts *LogOptions, args ...string) error {
if opts == nil {
opts = &LogOptions{}
}
return opts.Run(ctx, args)
}
func NewCmd() *cobra.Command {
cmd, err := cmdfactory.New(&LogOptions{}, cobra.Command{
Short: "Get console output of an instance",
Use: "logs [UUID|NAME]",
Args: cobra.ExactArgs(1),
Example: heredoc.Doc(`
# Get console output of a kraftcloud instance
$ kraft cloud inst logs 77d0316a-fbbe-488d-8618-5bf7a612477a
`),
Annotations: map[string]string{
cmdfactory.AnnotationHelpGroup: "kraftcloud-instance",
},
})
if err != nil {
panic(err)
}
return cmd
}
func (opts *LogOptions) Pre(cmd *cobra.Command, _ []string) error {
opts.metro = cmd.Flag("metro").Value.String()
if opts.metro == "" {
opts.metro = os.Getenv("KRAFTCLOUD_METRO")
}
if opts.metro == "" {
return fmt.Errorf("kraftcloud metro is unset")
}
log.G(cmd.Context()).WithField("metro", opts.metro).Debug("using")
return nil
}
func (opts *LogOptions) Run(ctx context.Context, args []string) error {
auth, err := config.GetKraftCloudAuthConfigFromContext(ctx)
if err != nil {
return fmt.Errorf("could not retrieve credentials: %w", err)
}
client := kraftcloud.NewInstancesClient(
kraftcloud.WithToken(config.GetKraftCloudTokenAuthConfig(*auth)),
)
var logs string
if utils.IsUUID(args[0]) {
logs, err = client.WithMetro(opts.metro).LogsByUUID(ctx, args[0], opts.Tail, true)
} else {
logs, err = client.WithMetro(opts.metro).LogsByName(ctx, args[0], opts.Tail, true)
}
if err != nil {
return fmt.Errorf("could not retrieve logs: %w", err)
}
fmt.Fprintf(iostreams.G(ctx).Out, "%s\n", logs)
return nil
}