mirrored from https://chromium.googlesource.com/infra/luci/luci-go
/
main.go
80 lines (67 loc) · 2.47 KB
/
main.go
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// Copyright 2021 The LUCI Authors.
//
// 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 service
import (
"context"
"flag"
"go.chromium.org/luci/server"
"go.chromium.org/luci/server/gaeemulation"
"go.chromium.org/luci/server/module"
logdog "go.chromium.org/luci/logdog/api/endpoints/coordinator/services/v1"
"go.chromium.org/luci/logdog/common/storage"
"go.chromium.org/luci/logdog/common/storage/bigtable"
"go.chromium.org/luci/logdog/server/config"
)
// Implementations contains some preconfigured Logdog subsystem clients.
type Implementations struct {
Storage storage.Storage // the intermediate storage
Coordinator logdog.ServicesClient // the bundling coordinator client
}
// Main initializes and runs a logdog microservice process.
func Main(init func(srv *server.Server, impl *Implementations) error) {
modules := []module.Module{
gaeemulation.NewModuleFromFlags(), // for fetching LUCI project configs
}
coordFlags := coordinatorFlags{}
coordFlags.register(flag.CommandLine)
storageFlags := bigtable.Flags{}
storageFlags.Register(flag.CommandLine)
server.Main(nil, modules, func(srv *server.Server) error {
if err := coordFlags.validate(); err != nil {
return err
}
if err := storageFlags.Validate(); err != nil {
return err
}
// Add an in-memory config caching to avoid hitting datastore all the time.
srv.Context = config.WithStore(srv.Context, &config.Store{})
// Initialize our Storage.
st, err := bigtable.StorageFromFlags(srv.Context, &storageFlags)
if err != nil {
return err
}
srv.RegisterCleanup(func(context.Context) { st.Close() })
// Initialize a Coordinator client that bundles requests together.
coordClient, err := coordinator(srv.Context, &coordFlags)
if err != nil {
return err
}
srv.RegisterCleanup(func(context.Context) { coordClient.Flush() })
// Let the particular microservice initialize itself.
return init(srv, &Implementations{
Storage: st,
Coordinator: coordClient,
})
})
}