main.go

// Copyright 2018 Palantir Technologies, Inc.
//
// 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 main

import (
	"fmt"
	"net/http"
	"os"
	"time"

	"github.com/gregjones/httpcache"
	"github.com/palantir/go-githubapp/githubapp"
	"github.com/rcrowley/go-metrics"
	"github.com/rs/zerolog"
)

func main() {
	config, err := ReadConfig("example/config.yml")
	if err != nil {
		panic(err)
	}

	logger := zerolog.New(os.Stdout).With().Timestamp().Logger()
	zerolog.DefaultContextLogger = &logger

	metricsRegistry := metrics.DefaultRegistry

	cc, err := githubapp.NewDefaultCachingClientCreator(
		config.Github,
		githubapp.WithClientUserAgent("example-app/1.0.0"),
		githubapp.WithClientTimeout(3*time.Second),
		githubapp.WithClientCaching(false, func() httpcache.Cache { return httpcache.NewMemoryCache() }),
		githubapp.WithClientMiddleware(
			githubapp.ClientMetrics(metricsRegistry),
		),
	)
	if err != nil {
		panic(err)
	}

	prCommentHandler := &PRCommentHandler{
		ClientCreator: cc,
		preamble:      config.AppConfig.PullRequestPreamble,
	}

	webhookHandler := githubapp.NewDefaultEventDispatcher(config.Github, prCommentHandler)

	http.Handle(githubapp.DefaultWebhookRoute, webhookHandler)

	addr := fmt.Sprintf("%s:%d", config.Server.Address, config.Server.Port)
	logger.Info().Msgf("Starting server on %s...", addr)
	err = http.ListenAndServe(addr, nil)
	if err != nil {
		panic(err)
	}
}