X-Git-Url: https://git.arvados.org/arvados.git/blobdiff_plain/10d70a1c08984a699ac3f6b893fe6d2141c5ad9e..09cbdc3074b3f1e69c9c537875146f6da0a6ed8f:/lib/dispatchcloud/dispatcher.go

diff --git a/lib/dispatchcloud/dispatcher.go b/lib/dispatchcloud/dispatcher.go
index 731c6d25d7..3403c50c97 100644
--- a/lib/dispatchcloud/dispatcher.go
+++ b/lib/dispatchcloud/dispatcher.go
@@ -14,15 +14,18 @@ import (
 	"sync"
 	"time"
 
-	"git.curoverse.com/arvados.git/lib/cloud"
-	"git.curoverse.com/arvados.git/lib/dispatchcloud/container"
-	"git.curoverse.com/arvados.git/lib/dispatchcloud/scheduler"
-	"git.curoverse.com/arvados.git/lib/dispatchcloud/ssh_executor"
-	"git.curoverse.com/arvados.git/lib/dispatchcloud/worker"
-	"git.curoverse.com/arvados.git/sdk/go/arvados"
-	"git.curoverse.com/arvados.git/sdk/go/auth"
-	"git.curoverse.com/arvados.git/sdk/go/ctxlog"
-	"git.curoverse.com/arvados.git/sdk/go/httpserver"
+	"git.arvados.org/arvados.git/lib/cloud"
+	"git.arvados.org/arvados.git/lib/controller/dblock"
+	"git.arvados.org/arvados.git/lib/ctrlctx"
+	"git.arvados.org/arvados.git/lib/dispatchcloud/container"
+	"git.arvados.org/arvados.git/lib/dispatchcloud/scheduler"
+	"git.arvados.org/arvados.git/lib/dispatchcloud/sshexecutor"
+	"git.arvados.org/arvados.git/lib/dispatchcloud/worker"
+	"git.arvados.org/arvados.git/sdk/go/arvados"
+	"git.arvados.org/arvados.git/sdk/go/auth"
+	"git.arvados.org/arvados.git/sdk/go/ctxlog"
+	"git.arvados.org/arvados.git/sdk/go/health"
+	"git.arvados.org/arvados.git/sdk/go/httpserver"
 	"github.com/julienschmidt/httprouter"
 	"github.com/prometheus/client_golang/prometheus"
 	"github.com/prometheus/client_golang/prometheus/promhttp"
@@ -37,6 +40,7 @@ const (
 
 type pool interface {
 	scheduler.WorkerPool
+	CheckHealth() error
 	Instances() []worker.InstanceView
 	SetIdleBehavior(cloud.InstanceID, worker.IdleBehavior) error
 	KillInstance(id cloud.InstanceID, reason string) error
@@ -48,10 +52,11 @@ type dispatcher struct {
 	Context       context.Context
 	ArvClient     *arvados.Client
 	AuthToken     string
+	Registry      *prometheus.Registry
 	InstanceSetID cloud.InstanceSetID
 
+	dbConnector ctrlctx.DBConnector
 	logger      logrus.FieldLogger
-	reg         *prometheus.Registry
 	instanceSet cloud.InstanceSet
 	pool        pool
 	queue       scheduler.ContainerQueue
@@ -78,7 +83,12 @@ func (disp *dispatcher) ServeHTTP(w http.ResponseWriter, r *http.Request) {
 // CheckHealth implements service.Handler.
 func (disp *dispatcher) CheckHealth() error {
 	disp.Start()
-	return nil
+	return disp.pool.CheckHealth()
+}
+
+// Done implements service.Handler.
+func (disp *dispatcher) Done() <-chan struct{} {
+	return disp.stopped
 }
 
 // Stop dispatching containers and release resources. Typically used
@@ -94,7 +104,7 @@ func (disp *dispatcher) Close() {
 
 // Make a worker.Executor for the given instance.
 func (disp *dispatcher) newExecutor(inst cloud.Instance) worker.Executor {
-	exr := ssh_executor.New(inst)
+	exr := sshexecutor.New(inst)
 	exr.SetTargetPort(disp.Cluster.Containers.CloudVMs.SSHPort)
 	exr.SetSigners(disp.sshKey)
 	return exr
@@ -111,6 +121,7 @@ func (disp *dispatcher) setup() {
 
 func (disp *dispatcher) initialize() {
 	disp.logger = ctxlog.FromContext(disp.Context)
+	disp.dbConnector = ctrlctx.DBConnector{PostgreSQL: disp.Cluster.PostgreSQL}
 
 	disp.ArvClient.AuthToken = disp.AuthToken
 
@@ -132,14 +143,14 @@ func (disp *dispatcher) initialize() {
 		disp.sshKey = key
 	}
 
-	disp.reg = prometheus.NewRegistry()
-	instanceSet, err := newInstanceSet(disp.Cluster, disp.InstanceSetID, disp.logger, disp.reg)
+	instanceSet, err := newInstanceSet(disp.Cluster, disp.InstanceSetID, disp.logger, disp.Registry)
 	if err != nil {
 		disp.logger.Fatalf("error initializing driver: %s", err)
 	}
+	dblock.Dispatch.Lock(disp.Context, disp.dbConnector.GetDB)
 	disp.instanceSet = instanceSet
-	disp.pool = worker.NewPool(disp.logger, disp.ArvClient, disp.reg, disp.InstanceSetID, disp.instanceSet, disp.newExecutor, disp.sshKey.PublicKey(), disp.Cluster)
-	disp.queue = container.NewQueue(disp.logger, disp.reg, disp.typeChooser, disp.ArvClient)
+	disp.pool = worker.NewPool(disp.logger, disp.ArvClient, disp.Registry, disp.InstanceSetID, disp.instanceSet, disp.newExecutor, disp.sshKey.PublicKey(), disp.Cluster)
+	disp.queue = container.NewQueue(disp.logger, disp.Registry, disp.typeChooser, disp.ArvClient)
 
 	if disp.Cluster.ManagementToken == "" {
 		disp.httpHandler = http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
@@ -148,22 +159,28 @@ func (disp *dispatcher) initialize() {
 	} else {
 		mux := httprouter.New()
 		mux.HandlerFunc("GET", "/arvados/v1/dispatch/containers", disp.apiContainers)
-		mux.HandlerFunc("POST", "/arvados/v1/dispatch/containers/kill", disp.apiInstanceKill)
+		mux.HandlerFunc("POST", "/arvados/v1/dispatch/containers/kill", disp.apiContainerKill)
 		mux.HandlerFunc("GET", "/arvados/v1/dispatch/instances", disp.apiInstances)
 		mux.HandlerFunc("POST", "/arvados/v1/dispatch/instances/hold", disp.apiInstanceHold)
 		mux.HandlerFunc("POST", "/arvados/v1/dispatch/instances/drain", disp.apiInstanceDrain)
 		mux.HandlerFunc("POST", "/arvados/v1/dispatch/instances/run", disp.apiInstanceRun)
 		mux.HandlerFunc("POST", "/arvados/v1/dispatch/instances/kill", disp.apiInstanceKill)
-		metricsH := promhttp.HandlerFor(disp.reg, promhttp.HandlerOpts{
+		metricsH := promhttp.HandlerFor(disp.Registry, promhttp.HandlerOpts{
 			ErrorLog: disp.logger,
 		})
 		mux.Handler("GET", "/metrics", metricsH)
 		mux.Handler("GET", "/metrics.json", metricsH)
+		mux.Handler("GET", "/_health/:check", &health.Handler{
+			Token:  disp.Cluster.ManagementToken,
+			Prefix: "/_health/",
+			Routes: health.Routes{"ping": disp.CheckHealth},
+		})
 		disp.httpHandler = auth.RequireLiteralToken(disp.Cluster.ManagementToken, mux)
 	}
 }
 
 func (disp *dispatcher) run() {
+	defer dblock.Dispatch.Unlock()
 	defer close(disp.stopped)
 	defer disp.instanceSet.Stop()
 	defer disp.pool.Stop()
@@ -176,7 +193,7 @@ func (disp *dispatcher) run() {
 	if pollInterval <= 0 {
 		pollInterval = defaultPollInterval
 	}
-	sched := scheduler.New(disp.Context, disp.queue, disp.pool, staleLockTimeout, pollInterval)
+	sched := scheduler.New(disp.Context, disp.queue, disp.pool, disp.Registry, staleLockTimeout, pollInterval)
 	sched.Start()
 	defer sched.Stop()