use go module for dependencies (#594)

appservice/appservice.go

@@ -0,0 +1,132 @@
+// Copyright 2018 Vector Creations Ltd
+//
+// 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 appservice
+
+import (
+	"context"
+	"net/http"
+	"sync"
+	"time"
+
+	appserviceAPI "github.com/matrix-org/dendrite/appservice/api"
+	"github.com/matrix-org/dendrite/appservice/consumers"
+	"github.com/matrix-org/dendrite/appservice/query"
+	"github.com/matrix-org/dendrite/appservice/routing"
+	"github.com/matrix-org/dendrite/appservice/storage"
+	"github.com/matrix-org/dendrite/appservice/types"
+	"github.com/matrix-org/dendrite/appservice/workers"
+	"github.com/matrix-org/dendrite/clientapi/auth/storage/accounts"
+	"github.com/matrix-org/dendrite/clientapi/auth/storage/devices"
+	"github.com/matrix-org/dendrite/common/basecomponent"
+	"github.com/matrix-org/dendrite/common/config"
+	"github.com/matrix-org/dendrite/common/transactions"
+	roomserverAPI "github.com/matrix-org/dendrite/roomserver/api"
+	"github.com/matrix-org/gomatrixserverlib"
+	"github.com/sirupsen/logrus"
+)
+
+// SetupAppServiceAPIComponent sets up and registers HTTP handlers for the AppServices
+// component.
+func SetupAppServiceAPIComponent(
+	base *basecomponent.BaseDendrite,
+	accountsDB *accounts.Database,
+	deviceDB *devices.Database,
+	federation *gomatrixserverlib.FederationClient,
+	roomserverAliasAPI roomserverAPI.RoomserverAliasAPI,
+	roomserverQueryAPI roomserverAPI.RoomserverQueryAPI,
+	transactionsCache *transactions.Cache,
+) appserviceAPI.AppServiceQueryAPI {
+	// Create a connection to the appservice postgres DB
+	appserviceDB, err := storage.NewDatabase(string(base.Cfg.Database.AppService))
+	if err != nil {
+		logrus.WithError(err).Panicf("failed to connect to appservice db")
+	}
+
+	// Wrap application services in a type that relates the application service and
+	// a sync.Cond object that can be used to notify workers when there are new
+	// events to be sent out.
+	workerStates := make([]types.ApplicationServiceWorkerState, len(base.Cfg.Derived.ApplicationServices))
+	for i, appservice := range base.Cfg.Derived.ApplicationServices {
+		m := sync.Mutex{}
+		ws := types.ApplicationServiceWorkerState{
+			AppService: appservice,
+			Cond:       sync.NewCond(&m),
+		}
+		workerStates[i] = ws
+
+		// Create bot account for this AS if it doesn't already exist
+		if err = generateAppServiceAccount(accountsDB, deviceDB, appservice); err != nil {
+			logrus.WithFields(logrus.Fields{
+				"appservice": appservice.ID,
+			}).WithError(err).Panicf("failed to generate bot account for appservice")
+		}
+	}
+
+	// Create appserivce query API with an HTTP client that will be used for all
+	// outbound and inbound requests (inbound only for the internal API)
+	appserviceQueryAPI := query.AppServiceQueryAPI{
+		HTTPClient: &http.Client{
+			Timeout: time.Second * 30,
+		},
+		Cfg: base.Cfg,
+	}
+
+	appserviceQueryAPI.SetupHTTP(http.DefaultServeMux)
+
+	consumer := consumers.NewOutputRoomEventConsumer(
+		base.Cfg, base.KafkaConsumer, accountsDB, appserviceDB,
+		roomserverQueryAPI, roomserverAliasAPI, workerStates,
+	)
+	if err := consumer.Start(); err != nil {
+		logrus.WithError(err).Panicf("failed to start appservice roomserver consumer")
+	}
+
+	// Create application service transaction workers
+	if err := workers.SetupTransactionWorkers(appserviceDB, workerStates); err != nil {
+		logrus.WithError(err).Panicf("failed to start app service transaction workers")
+	}
+
+	// Set up HTTP Endpoints
+	routing.Setup(
+		base.APIMux, *base.Cfg, roomserverQueryAPI, roomserverAliasAPI,
+		accountsDB, federation, transactionsCache,
+	)
+
+	return &appserviceQueryAPI
+}
+
+// generateAppServiceAccounts creates a dummy account based off the
+// `sender_localpart` field of each application service if it doesn't
+// exist already
+func generateAppServiceAccount(
+	accountsDB *accounts.Database,
+	deviceDB *devices.Database,
+	as config.ApplicationService,
+) error {
+	ctx := context.Background()
+
+	// Create an account for the application service
+	acc, err := accountsDB.CreateAccount(ctx, as.SenderLocalpart, "", as.ID)
+	if err != nil {
+		return err
+	} else if acc == nil {
+		// This account already exists
+		return nil
+	}
+
+	// Create a dummy device with a dummy token for the application service
+	_, err = deviceDB.CreateDevice(ctx, as.SenderLocalpart, nil, as.ASToken, &as.SenderLocalpart)
+	return err
+}