mirror of https://github.com/knative/client.git
142 lines
4.3 KiB
Go
142 lines
4.3 KiB
Go
/*
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Copyright 2020 The Knative Authors
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Licensed under the Apache License, Version 2.0 (the "License");
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you may not use this file except in compliance with the License.
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You may obtain a copy of the License at
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http://www.apache.org/licenses/LICENSE-2.0
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Unless required by applicable law or agreed to in writing, software
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distributed under the License is distributed on an "AS IS" BASIS,
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WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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See the License for the specific language governing permissions and
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limitations under the License.
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*/
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package broker
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import (
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"fmt"
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"github.com/spf13/cobra"
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metav1beta1 "k8s.io/apimachinery/pkg/apis/meta/v1beta1"
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"k8s.io/apimachinery/pkg/runtime"
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"knative.dev/client/pkg/kn/commands"
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"knative.dev/client/pkg/kn/commands/flags"
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hprinters "knative.dev/client/pkg/printers"
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eventingv1 "knative.dev/eventing/pkg/apis/eventing/v1"
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)
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var listExample = `
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# List all brokers
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kn broker list
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# List all brokers in JSON output format
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kn broker list -o json`
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// NewBrokerListCommand represents command to list all brokers
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func NewBrokerListCommand(p *commands.KnParams) *cobra.Command {
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brokerListFlags := flags.NewListPrintFlags(ListHandlers)
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cmd := &cobra.Command{
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Use: "list",
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Short: "List brokers",
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Aliases: []string{"ls"},
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Example: listExample,
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RunE: func(cmd *cobra.Command, args []string) (err error) {
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namespace, err := p.GetNamespace(cmd)
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if err != nil {
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return err
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}
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eventingClient, err := p.NewEventingClient(namespace)
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if err != nil {
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return err
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}
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brokerList, err := eventingClient.ListBrokers(cmd.Context())
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if err != nil {
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return err
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}
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if !brokerListFlags.GenericPrintFlags.OutputFlagSpecified() && len(brokerList.Items) == 0 {
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fmt.Fprintf(cmd.OutOrStdout(), "No brokers found.\n")
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return nil
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}
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// empty namespace indicates all-namespaces flag is specified
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if namespace == "" {
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brokerListFlags.EnsureWithNamespace()
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}
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err = brokerListFlags.Print(brokerList, cmd.OutOrStdout())
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if err != nil {
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return err
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}
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return nil
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},
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}
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commands.AddNamespaceFlags(cmd.Flags(), true)
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brokerListFlags.AddFlags(cmd)
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return cmd
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}
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// ListHandlers handles printing human readable table for `kn broker list` command's output
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func ListHandlers(h hprinters.PrintHandler) {
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brokerColumnDefinitions := []metav1beta1.TableColumnDefinition{
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{Name: "Namespace", Type: "string", Description: "Namespace of the Broker instance", Priority: 0},
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{Name: "Name", Type: "string", Description: "Name of the Broker instance", Priority: 1},
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{Name: "URL", Type: "string", Description: "URL of the Broker instance", Priority: 1},
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{Name: "Age", Type: "string", Description: "Age of the Broker instance", Priority: 1},
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{Name: "Conditions", Type: "string", Description: "Ready state conditions", Priority: 1},
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{Name: "Ready", Type: "string", Description: "Ready state of the Broker instance", Priority: 1},
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{Name: "Reason", Type: "string", Description: "Reason if state is not Ready", Priority: 1},
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}
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h.TableHandler(brokerColumnDefinitions, printBroker)
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h.TableHandler(brokerColumnDefinitions, printBrokerList)
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}
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// printBrokerList populates the broker list table rows
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func printBrokerList(kServiceList *eventingv1.BrokerList, options hprinters.PrintOptions) ([]metav1beta1.TableRow, error) {
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rows := make([]metav1beta1.TableRow, 0, len(kServiceList.Items))
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for i := range kServiceList.Items {
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ksvc := &kServiceList.Items[i]
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r, err := printBroker(ksvc, options)
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if err != nil {
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return nil, err
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}
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rows = append(rows, r...)
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}
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return rows, nil
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}
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// printBroker populates the broker table rows
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func printBroker(broker *eventingv1.Broker, options hprinters.PrintOptions) ([]metav1beta1.TableRow, error) {
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name := broker.Name
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url := broker.Status.Address.URL
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age := commands.TranslateTimestampSince(broker.CreationTimestamp)
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conditions := commands.ConditionsValue(broker.Status.Conditions)
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ready := commands.ReadyCondition(broker.Status.Conditions)
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reason := commands.NonReadyConditionReason(broker.Status.Conditions)
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row := metav1beta1.TableRow{
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Object: runtime.RawExtension{Object: broker},
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}
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if options.AllNamespaces {
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row.Cells = append(row.Cells, broker.Namespace)
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}
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row.Cells = append(row.Cells,
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name,
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url,
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age,
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conditions,
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ready,
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reason)
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return []metav1beta1.TableRow{row}, nil
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}
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