79 lines
1.9 KiB
Go
79 lines
1.9 KiB
Go
package cmd
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import (
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"context"
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"os"
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"time"
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"github.com/pkg/errors"
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"github.com/spf13/cobra"
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"github.com/spf13/viper"
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"github.com/ThreeDotsLabs/watermill-io/pkg/io"
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"github.com/ThreeDotsLabs/watermill/message"
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"github.com/ThreeDotsLabs/watermill/message/router/plugin"
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)
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// producer is initialized by parent command to the pub/sub provider of choice.
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var producer message.Publisher
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func addProduceCmd(parent *cobra.Command, topicKey string) *cobra.Command {
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cmd := &cobra.Command{
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Use: "produce",
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Short: "Produce messages to a pub/sub from the stdin",
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Long: `Produce messages to the pub/sub of your choice from the standard input.
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For the configuration of particular pub/sub providers, see the help for the provider commands.`,
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PreRunE: func(cmd *cobra.Command, args []string) error {
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return nil
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},
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RunE: func(cmd *cobra.Command, args []string) error {
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topic := viper.GetString(topicKey)
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router, err := message.NewRouter(
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message.RouterConfig{
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CloseTimeout: 10 * time.Second,
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},
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logger,
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)
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if err != nil {
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return errors.Wrap(err, "could not create router")
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}
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router.AddPlugin(plugin.SignalsHandler)
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in, err := io.NewSubscriber(
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os.Stdin,
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io.SubscriberConfig{
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PollInterval: time.Second,
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UnmarshalFunc: io.PayloadUnmarshalFunc,
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},
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logger,
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)
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if err != nil {
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return errors.Wrap(err, "could not create console subscriber")
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}
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router.AddHandler(
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"produce_from_stdin",
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"stdin",
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in,
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topic,
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producer,
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func(msg *message.Message) ([]*message.Message, error) {
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if string(msg.Payload) == "\n" {
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logger.Trace("Message is empty, don't publish", nil)
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return nil, nil
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}
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// just pass the message along
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return message.Messages{msg}, nil
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},
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)
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return router.Run(context.Background())
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},
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}
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parent.AddCommand(cmd)
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return cmd
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}
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