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describe.go
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describe.go
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package describe
import (
"context"
"net/http"
kafkaflagutil "github.com/redhat-developer/app-services-cli/pkg/cmd/kafka/flagutil"
"github.com/redhat-developer/app-services-cli/pkg/cmd/kafka/kafkacmdutil"
"github.com/redhat-developer/app-services-cli/pkg/core/cmdutil/flagutil"
"github.com/redhat-developer/app-services-cli/pkg/core/ioutil/dump"
"github.com/redhat-developer/app-services-cli/pkg/core/ioutil/iostreams"
"github.com/redhat-developer/app-services-cli/pkg/core/localize"
"github.com/redhat-developer/app-services-cli/pkg/core/logging"
"github.com/redhat-developer/app-services-cli/pkg/core/servicecontext"
"github.com/redhat-developer/app-services-cli/pkg/shared/contextutil"
"github.com/redhat-developer/app-services-cli/pkg/shared/factory"
"github.com/spf13/cobra"
)
type options struct {
name string
kafkaID string
outputFormat string
IO *iostreams.IOStreams
Connection factory.ConnectionFunc
Logger logging.Logger
localizer localize.Localizer
Context context.Context
ServiceContext servicecontext.IContext
}
// NewDescribeTopicCommand gets a new command for describing a kafka topic.
func NewDescribeTopicCommand(f *factory.Factory) *cobra.Command {
opts := &options{
Connection: f.Connection,
Logger: f.Logger,
IO: f.IOStreams,
localizer: f.Localizer,
Context: f.Context,
ServiceContext: f.ServiceContext,
}
cmd := &cobra.Command{
Use: "describe",
Short: opts.localizer.MustLocalize("kafka.topic.describe.cmd.shortDescription"),
Long: opts.localizer.MustLocalize("kafka.topic.describe.cmd.longDescription"),
Example: opts.localizer.MustLocalize("kafka.topic.describe.cmd.example"),
Args: cobra.NoArgs,
RunE: func(cmd *cobra.Command, args []string) (err error) {
if opts.outputFormat != "" {
if err = flagutil.ValidateOutput(opts.outputFormat); err != nil {
return err
}
}
if opts.kafkaID == "" {
kafkaInstance, err := contextutil.GetCurrentKafkaInstance(f)
if err != nil {
return err
}
opts.kafkaID = kafkaInstance.GetId()
}
return runCmd(opts)
},
}
flags := kafkaflagutil.NewFlagSet(cmd, opts.localizer)
flags.AddOutput(&opts.outputFormat)
flags.AddInstanceID(&opts.kafkaID)
flags.StringVar(&opts.name, "name", "", opts.localizer.MustLocalize("kafka.topic.common.flag.name.description"))
_ = cmd.RegisterFlagCompletionFunc("name", func(cmd *cobra.Command, _ []string, toComplete string) ([]string, cobra.ShellCompDirective) {
return kafkacmdutil.FilterValidTopicNameArgs(f, toComplete)
})
_ = cmd.MarkFlagRequired("name")
flagutil.EnableOutputFlagCompletion(cmd)
return cmd
}
func runCmd(opts *options) error {
conn, err := opts.Connection()
if err != nil {
return err
}
api, kafkaInstance, err := conn.API().KafkaAdmin(opts.kafkaID)
if err != nil {
return err
}
// fetch the topic
topicResponse, httpRes, err := api.TopicsApi.GetTopic(opts.Context, opts.name).Execute()
if httpRes != nil {
defer httpRes.Body.Close()
}
if err != nil {
if httpRes == nil {
return err
}
topicNameTmplPair := localize.NewEntry("TopicName", opts.name)
kafkaNameTmplPair := localize.NewEntry("InstanceName", kafkaInstance.GetName())
operationTmplPair := localize.NewEntry("Operation", "describe")
switch httpRes.StatusCode {
case http.StatusNotFound:
return opts.localizer.MustLocalizeError("kafka.topic.common.error.notFoundError", topicNameTmplPair, kafkaNameTmplPair)
case http.StatusUnauthorized:
return opts.localizer.MustLocalizeError("kafka.topic.common.error.unauthorized", operationTmplPair)
case http.StatusForbidden:
return opts.localizer.MustLocalizeError("kafka.topic.common.error.forbidden", operationTmplPair)
case http.StatusInternalServerError:
return opts.localizer.MustLocalizeError("kafka.topic.common.error.internalServerError")
case http.StatusServiceUnavailable:
return opts.localizer.MustLocalizeError("kafka.topic.common.error.unableToConnectToKafka", localize.NewEntry("Name", kafkaInstance.GetName()))
default:
return err
}
}
return dump.Formatted(opts.IO.Out, opts.outputFormat, topicResponse)
}