14325: Clean up unsafe concurrency in tests.

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

diff --git a/lib/dispatchcloud/dispatcher.go b/lib/dispatchcloud/dispatcher.go
index 81ad0ed3fa2b5924fdf1a55a3603dbfc88827fef..3e3f5ee1993f0f0dfb98e4c68e02e80b1ee6f888 100644 (file)
--- a/lib/dispatchcloud/dispatcher.go
+++ b/lib/dispatchcloud/dispatcher.go
@@ -21,9 +21,10 @@ import (
        "git.curoverse.com/arvados.git/sdk/go/arvados"
        "git.curoverse.com/arvados.git/sdk/go/auth"
        "git.curoverse.com/arvados.git/sdk/go/httpserver"
-       "github.com/Sirupsen/logrus"
+       "github.com/julienschmidt/httprouter"
        "github.com/prometheus/client_golang/prometheus"
        "github.com/prometheus/client_golang/prometheus/promhttp"
+       "github.com/sirupsen/logrus"
        "golang.org/x/crypto/ssh"
 )
 
@@ -35,6 +36,7 @@ const (
 type pool interface {
        scheduler.WorkerPool
        Instances() []worker.InstanceView
+       SetIdleBehavior(cloud.InstanceID, worker.IdleBehavior) error
        Stop()
 }
 
@@ -87,6 +89,7 @@ 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.SetTargetPort(disp.Cluster.CloudVMs.SSHPort)
        exr.SetSigners(disp.sshKey)
        return exr
 }
@@ -121,13 +124,13 @@ func (disp *dispatcher) initialize() {
                disp.sshKey = key
        }
 
-       instanceSet, err := newInstanceSet(disp.Cluster, disp.InstanceSetID)
+       instanceSet, err := newInstanceSet(disp.Cluster, disp.InstanceSetID, disp.logger)
        if err != nil {
                disp.logger.Fatalf("error initializing driver: %s", err)
        }
-       disp.instanceSet = &instanceSetProxy{instanceSet}
+       disp.instanceSet = instanceSet
        disp.reg = prometheus.NewRegistry()
-       disp.pool = worker.NewPool(disp.logger, disp.reg, disp.instanceSet, disp.newExecutor, disp.Cluster)
+       disp.pool = worker.NewPool(disp.logger, arvClient, disp.reg, disp.instanceSet, disp.newExecutor, disp.Cluster)
        disp.queue = container.NewQueue(disp.logger, disp.reg, disp.typeChooser, arvClient)
 
        if disp.Cluster.ManagementToken == "" {
@@ -135,14 +138,17 @@ func (disp *dispatcher) initialize() {
                        http.Error(w, "Management API authentication is not configured", http.StatusForbidden)
                })
        } else {
-               mux := http.NewServeMux()
-               mux.HandleFunc("/arvados/v1/dispatch/containers", disp.apiContainers)
-               mux.HandleFunc("/arvados/v1/dispatch/instances", disp.apiInstances)
+               mux := httprouter.New()
+               mux.HandlerFunc("GET", "/arvados/v1/dispatch/containers", disp.apiContainers)
+               mux.HandlerFunc("GET", "/arvados/v1/dispatch/instances", disp.apiInstances)
+               mux.HandlerFunc("POST", "/arvados/v1/dispatch/instances/:instance_id/hold", disp.apiInstanceHold)
+               mux.HandlerFunc("POST", "/arvados/v1/dispatch/instances/:instance_id/drain", disp.apiInstanceDrain)
+               mux.HandlerFunc("POST", "/arvados/v1/dispatch/instances/:instance_id/run", disp.apiInstanceRun)
                metricsH := promhttp.HandlerFor(disp.reg, promhttp.HandlerOpts{
                        ErrorLog: disp.logger,
                })
-               mux.Handle("/metrics", metricsH)
-               mux.Handle("/metrics.json", metricsH)
+               mux.Handler("GET", "/metrics", metricsH)
+               mux.Handler("GET", "/metrics.json", metricsH)
                disp.httpHandler = auth.RequireLiteralToken(disp.Cluster.ManagementToken, mux)
        }
 }
@@ -169,12 +175,8 @@ func (disp *dispatcher) run() {
 
 // Management API: all active and queued containers.
 func (disp *dispatcher) apiContainers(w http.ResponseWriter, r *http.Request) {
-       if r.Method != "GET" {
-               httpserver.Error(w, "method not allowed", http.StatusMethodNotAllowed)
-               return
-       }
        var resp struct {
-               Items []container.QueueEnt
+               Items []container.QueueEnt `json:"items"`
        }
        qEntries, _ := disp.queue.Entries()
        for _, ent := range qEntries {
@@ -185,13 +187,34 @@ func (disp *dispatcher) apiContainers(w http.ResponseWriter, r *http.Request) {
 
 // Management API: all active instances (cloud VMs).
 func (disp *dispatcher) apiInstances(w http.ResponseWriter, r *http.Request) {
-       if r.Method != "GET" {
-               httpserver.Error(w, "method not allowed", http.StatusMethodNotAllowed)
-               return
-       }
        var resp struct {
-               Items []worker.InstanceView
+               Items []worker.InstanceView `json:"items"`
        }
        resp.Items = disp.pool.Instances()
        json.NewEncoder(w).Encode(resp)
 }
+
+// Management API: set idle behavior to "hold" for specified instance.
+func (disp *dispatcher) apiInstanceHold(w http.ResponseWriter, r *http.Request) {
+       disp.apiInstanceIdleBehavior(w, r, worker.IdleBehaviorHold)
+}
+
+// Management API: set idle behavior to "drain" for specified instance.
+func (disp *dispatcher) apiInstanceDrain(w http.ResponseWriter, r *http.Request) {
+       disp.apiInstanceIdleBehavior(w, r, worker.IdleBehaviorDrain)
+}
+
+// Management API: set idle behavior to "run" for specified instance.
+func (disp *dispatcher) apiInstanceRun(w http.ResponseWriter, r *http.Request) {
+       disp.apiInstanceIdleBehavior(w, r, worker.IdleBehaviorRun)
+}
+
+func (disp *dispatcher) apiInstanceIdleBehavior(w http.ResponseWriter, r *http.Request, want worker.IdleBehavior) {
+       params, _ := r.Context().Value(httprouter.ParamsKey).(httprouter.Params)
+       id := cloud.InstanceID(params.ByName("instance_id"))
+       err := disp.pool.SetIdleBehavior(id, want)
+       if err != nil {
+               httpserver.Error(w, err.Error(), http.StatusNotFound)
+               return
+       }
+}