100 lines
2.3 KiB
Go
100 lines
2.3 KiB
Go
/*
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Copyright 2021 The Dapr Authors
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Licensed under the Apache License, Version 2.0 (the "License");
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you may not use this file except in compliance with the License.
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You may obtain a copy of the License at
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http://www.apache.org/licenses/LICENSE-2.0
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Unless required by applicable law or agreed to in writing, software
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distributed under the License is distributed on an "AS IS" BASIS,
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WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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See the License for the specific language governing permissions and
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limitations under the License.
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*/
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package app
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import (
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"context"
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"errors"
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"fmt"
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"log"
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"net/http"
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"github.com/dapr/go-sdk/service/common"
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daprd "github.com/dapr/go-sdk/service/http"
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"github.com/dapr/components-contrib/tests/certification/flow"
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)
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type App struct {
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appName string
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address string
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setup SetupFn
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}
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type SetupFn func(flow.Context, common.Service) error
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func Run(appName, address string, setup SetupFn) (string, flow.Runnable, flow.Runnable) {
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return New(appName, address, setup).ToStep()
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}
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func New(appName, address string, setup SetupFn) App {
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return App{
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appName: appName,
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address: address,
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setup: setup,
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}
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}
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func (a App) AppName() string {
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return a.appName
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}
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func (a App) ToStep() (string, flow.Runnable, flow.Runnable) {
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return a.appName, a.Start, a.Stop
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}
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func Start(appName, address string, setup SetupFn) flow.Runnable {
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return New(appName, address, setup).Start
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}
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func (a App) Start(ctx flow.Context) error {
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s := daprd.NewService(a.address)
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if err := a.setup(ctx, s); err != nil {
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return err
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}
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go func() {
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if err := s.Start(); err != nil && err != http.ErrServerClosed {
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log.Printf("error listenning: %v", err)
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}
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}()
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ctx.Set(a.appName, s)
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return nil
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}
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func Stop(appName string) flow.Runnable {
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return App{appName: appName}.Stop
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}
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func (a App) Stop(ctx flow.Context) error {
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var s common.Service
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if ctx.Get(a.appName, &s) {
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err := s.Stop()
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if err != nil {
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if errors.Is(err, context.DeadlineExceeded) {
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// If the error is a context deadline exceeded, it just means the HTTP server couldn't shut down gracefully
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// We will log that error but we can safely ignore it
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log.Printf("Service did not shut down gracefully - ignoring the error: %s", err)
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return nil
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}
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return fmt.Errorf("failed to stop service: %w", err)
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}
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}
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return nil
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}
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