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89 lines
2.2 KiB
Go
89 lines
2.2 KiB
Go
package persister
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import (
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"fmt"
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"github.com/creekorful/trandoshan/internal/util/http"
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"github.com/creekorful/trandoshan/internal/util/logging"
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natsutil "github.com/creekorful/trandoshan/internal/util/nats"
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"github.com/creekorful/trandoshan/pkg/proto"
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"github.com/nats-io/nats.go"
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"github.com/rs/zerolog/log"
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"github.com/urfave/cli/v2"
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)
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// GetApp return the persister app
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func GetApp() *cli.App {
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return &cli.App{
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Name: "tdsh-persister",
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Version: "0.3.0",
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Usage: "Trandoshan persister process",
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Flags: []cli.Flag{
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logging.GetLogFlag(),
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&cli.StringFlag{
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Name: "nats-uri",
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Usage: "URI to the NATS server",
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Required: true,
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},
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&cli.StringFlag{
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Name: "api-uri",
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Usage: "URI to the API server",
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Required: true,
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},
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},
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Action: execute,
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}
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}
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func execute(ctx *cli.Context) error {
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logging.ConfigureLogger(ctx)
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log.Info().Str("ver", ctx.App.Version).Msg("Starting tdsh-persister")
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log.Debug().Str("uri", ctx.String("nats-uri")).Msg("Using NATS server")
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log.Debug().Str("uri", ctx.String("api-uri")).Msg("Using API server")
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// Create the HTTP client
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httpClient := &http.Client{}
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// Create the NATS subscriber
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sub, err := natsutil.NewSubscriber(ctx.String("nats-uri"))
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if err != nil {
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return err
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}
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defer sub.Close()
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log.Info().Msg("Successfully initialized tdsh-persister. Waiting for resources")
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if err := sub.QueueSubscribe(proto.ResourceSubject, "persisters", handleMessage(httpClient, ctx.String("api-uri"))); 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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func handleMessage(httpClient *http.Client, apiURI string) natsutil.MsgHandler {
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return func(nc *nats.Conn, msg *nats.Msg) error {
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var resMsg proto.ResourceMsg
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if err := natsutil.ReadJSON(msg, &resMsg); err != nil {
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return err
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}
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log.Debug().Str("url", resMsg.URL).Msg("Processing resource")
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url := fmt.Sprintf("%s/v1/resources", apiURI)
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r, err := httpClient.JSONPost(url, &proto.ResourceDto{
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URL: resMsg.URL,
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Body: resMsg.Body,
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}, nil)
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if err != nil || r.StatusCode != http.StatusCreated {
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log.Err(err).Msg("Error while sending resource to the API")
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return err
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}
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log.Debug().Str("url", resMsg.URL).Msg("Successfully processed resource")
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return nil
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}
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}
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