18874: Fix wb2 install/boot to accommodate readonly source tree.

[arvados.git] / lib / dispatchcloud / dispatcher.go

diff --git a/lib/dispatchcloud/dispatcher.go b/lib/dispatchcloud/dispatcher.go
index 278bcb66579b7f37c280e0c2bf5c62ca3524694d..47e60abdee4744689f18ecd2094fd606188982d3 100644 (file)
--- a/lib/dispatchcloud/dispatcher.go
+++ b/lib/dispatchcloud/dispatcher.go
@@ -15,13 +15,17 @@ import (
        "time"
 
        "git.arvados.org/arvados.git/lib/cloud"
+       "git.arvados.org/arvados.git/lib/config"
+       "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/ssh_executor"
+       "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"
@@ -52,6 +56,7 @@ type dispatcher struct {
        Registry      *prometheus.Registry
        InstanceSetID cloud.InstanceSetID
 
+       dbConnector ctrlctx.DBConnector
        logger      logrus.FieldLogger
        instanceSet cloud.InstanceSet
        pool        pool
@@ -100,13 +105,13 @@ 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
 }
 
-func (disp *dispatcher) typeChooser(ctr *arvados.Container) (arvados.InstanceType, error) {
+func (disp *dispatcher) typeChooser(ctr *arvados.Container) ([]arvados.InstanceType, error) {
        return ChooseInstanceType(disp.Cluster, ctr)
 }
 
@@ -117,6 +122,7 @@ 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
 
@@ -132,18 +138,23 @@ func (disp *dispatcher) initialize() {
        disp.stop = make(chan struct{}, 1)
        disp.stopped = make(chan struct{})
 
-       if key, err := ssh.ParsePrivateKey([]byte(disp.Cluster.Containers.DispatchPrivateKey)); err != nil {
+       if key, err := config.LoadSSHKey(disp.Cluster.Containers.DispatchPrivateKey); err != nil {
                disp.logger.Fatalf("error parsing configured Containers.DispatchPrivateKey: %s", err)
        } else {
                disp.sshKey = key
        }
+       installPublicKey := disp.sshKey.PublicKey()
+       if !disp.Cluster.Containers.CloudVMs.DeployPublicKey {
+               installPublicKey = nil
+       }
 
        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.Registry, disp.InstanceSetID, disp.instanceSet, disp.newExecutor, disp.sshKey.PublicKey(), disp.Cluster)
+       disp.pool = worker.NewPool(disp.logger, disp.ArvClient, disp.Registry, disp.InstanceSetID, disp.instanceSet, disp.newExecutor, installPublicKey, disp.Cluster)
        disp.queue = container.NewQueue(disp.logger, disp.Registry, disp.typeChooser, disp.ArvClient)
 
        if disp.Cluster.ManagementToken == "" {
@@ -164,11 +175,17 @@ func (disp *dispatcher) initialize() {
                })
                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()
@@ -181,7 +198,10 @@ func (disp *dispatcher) run() {
        if pollInterval <= 0 {
                pollInterval = defaultPollInterval
        }
-       sched := scheduler.New(disp.Context, disp.queue, disp.pool, disp.Registry, staleLockTimeout, pollInterval)
+       sched := scheduler.New(disp.Context, disp.ArvClient, disp.queue, disp.pool, disp.Registry, staleLockTimeout, pollInterval,
+               disp.Cluster.Containers.CloudVMs.InitialQuotaEstimate,
+               disp.Cluster.Containers.CloudVMs.MaxInstances,
+               disp.Cluster.Containers.CloudVMs.SupervisorFraction)
        sched.Start()
        defer sched.Stop()