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main.go
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main.go
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// 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 (
"context"
"fmt"
"log"
"net/http"
"os"
"os/signal"
"syscall"
"time"
"github.com/h3mmy/bloopyboi/bot"
"github.com/h3mmy/bloopyboi/bot/providers"
"go.uber.org/zap"
"go.uber.org/zap/zapcore"
"golang.org/x/sync/errgroup"
"sigs.k8s.io/controller-runtime/pkg/manager/signals"
"github.com/alexliesenfeld/health"
)
const (
botLogFieldKey = "bot"
)
// Where the magic happens
func main() {
ctx := signals.SetupSignalHandler()
ctx, cancelCtxFn := context.WithCancel(ctx)
go func() {
sCh := make(chan os.Signal, 3)
signal.Notify(sCh, syscall.SIGINT, syscall.SIGTERM, os.Interrupt)
<-sCh
cancelCtxFn()
}()
logger := providers.NewZapLogger()
commonLogger := logger.With(zapcore.Field{
Key: "group",
Type: zapcore.StringType,
String: "common",
})
boi := bot.New()
boi.WithLogger(commonLogger.With(zapcore.Field{
Key: botLogFieldKey,
Type: zapcore.StringType,
String: "BloopyBoi",
}))
errGroup, ctx := errgroup.WithContext(ctx)
errGroup.Go(func() error {
return boi.Run(ctx)
})
gateway := bot.NewDefaultGateway().WithBotInstance(boi)
// Start server
errGroup.Go(func() error {
if err := gateway.Start(); err != nil && err != http.ErrServerClosed {
return err
}
return nil
})
// Liveness check should mostly contain checks that identify if the service is locked up or in a state that it
// cannot recover from (deadlocks, etc.). In most cases it should just respond with 200 OK to avoid unexpected
// restarts.
livenessChecker := health.NewChecker(
health.WithCheck(health.Check{
Name: "boi",
Check: func(ctx context.Context) error {
return boi.Ping(ctx)
},
}),
)
readinessChecker := boi.GetReadinessChecker()
// Create a new health check http.Handler that returns the health status
// serialized as a JSON string. You can pass pass further configuration
// options to NewHandler to modify default configuration.
http.Handle("/healthz", health.NewHandler(livenessChecker))
http.Handle("/ready", health.NewHandler(readinessChecker))
// Start the HTTP server
log.Fatalln(http.ListenAndServe(":3000", nil))
// Wait here until CTRL-C or other term signal is received.
fmt.Println("Bot is now running. Press CTRL-C to exit.")
err := errGroup.Wait()
if err != nil {
logger.Error("error", zapcore.Field{
Key: "error",
Type: zapcore.ErrorType,
String: err.Error(),
})
} else {
logger.Info("main exited")
}
// Wait for interrupt signal to gracefully shutdown the server with a timeout of 10 seconds.
ctx, cancel := context.WithTimeout(context.Background(), 10*time.Second)
defer cancel()
if err := gateway.Shutdown(ctx); err != nil {
commonLogger.Error("error shutting down gateway", zap.Error(err))
}
}