/
webhook.go
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/
webhook.go
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// Copyright 2023 The Authors (see AUTHORS file)
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
package cli
import (
"context"
"fmt"
"net/http"
"google.golang.org/api/option"
"github.com/abcxyz/github-metrics-aggregator/pkg/version"
"github.com/abcxyz/github-metrics-aggregator/pkg/webhook"
"github.com/abcxyz/pkg/cli"
"github.com/abcxyz/pkg/logging"
"github.com/abcxyz/pkg/serving"
)
var _ cli.Command = (*WebhookServerCommand)(nil)
type WebhookServerCommand struct {
cli.BaseCommand
cfg *webhook.Config
// testFlagSetOpts is only used for testing.
testFlagSetOpts []cli.Option
testPubSubClientOptions []option.ClientOption
// testDatastore is only used for testing
testDatastore webhook.Datastore
}
func (c *WebhookServerCommand) Desc() string {
return `Start a webhook server for GitHub Metrics Aggregator`
}
func (c *WebhookServerCommand) Help() string {
return `
Usage: {{ COMMAND }} [options]
Start a webhook server for GitHub Metrics Aggregator.
`
}
func (c *WebhookServerCommand) Flags() *cli.FlagSet {
c.cfg = &webhook.Config{}
set := cli.NewFlagSet(c.testFlagSetOpts...)
return c.cfg.ToFlags(set)
}
func (c *WebhookServerCommand) Run(ctx context.Context, args []string) error {
server, mux, err := c.RunUnstarted(ctx, args)
if err != nil {
return err
}
return server.StartHTTPHandler(ctx, mux)
}
func (c *WebhookServerCommand) RunUnstarted(ctx context.Context, args []string) (*serving.Server, http.Handler, error) {
f := c.Flags()
if err := f.Parse(args); err != nil {
return nil, nil, fmt.Errorf("failed to parse flags: %w", err)
}
args = f.Args()
if len(args) > 0 {
return nil, nil, fmt.Errorf("unexpected arguments: %q", args)
}
logger := logging.FromContext(ctx)
logger.DebugContext(ctx, "server starting",
"name", version.Name,
"commit", version.Commit,
"version", version.Version)
if err := c.cfg.Validate(); err != nil {
return nil, nil, fmt.Errorf("invalid configuration: %w", err)
}
logger.DebugContext(ctx, "loaded configuration", "config", c.cfg)
agent := fmt.Sprintf("abcxyz:github-metrics-aggregator/%s", version.Version)
opts := append([]option.ClientOption{option.WithUserAgent(agent)}, c.testPubSubClientOptions...)
webhookClientOptions := &webhook.WebhookClientOptions{
DLQEventPubsubClientOpts: opts,
EventPubsubClientOpts: opts,
}
// expect tests to pass this attribute
if c.testDatastore != nil {
webhookClientOptions.DatastoreClientOverride = c.testDatastore
}
webhookServer, err := webhook.NewServer(ctx, c.cfg, webhookClientOptions)
if err != nil {
return nil, nil, fmt.Errorf("failed to create server: %w", err)
}
mux := webhookServer.Routes(ctx)
server, err := serving.New(c.cfg.Port)
if err != nil {
return nil, nil, fmt.Errorf("failed to create serving infrastructure: %w", err)
}
return server, mux, nil
}