open-consul/command/agent/coordinate_endpoint_test.go

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package agent
import (
"net/http"
"net/http/httptest"
"os"
"testing"
"time"
"github.com/hashicorp/consul/consul/structs"
"github.com/hashicorp/consul/testutil"
"github.com/hashicorp/serf/coordinate"
)
func TestCoordinate_Datacenters(t *testing.T) {
dir, srv := makeHTTPServer(t)
defer os.RemoveAll(dir)
defer srv.Shutdown()
defer srv.agent.Shutdown()
testutil.WaitForLeader(t, srv.agent.RPC, "dc1")
req, err := http.NewRequest("GET", "/v1/coordinate/datacenters", nil)
if err != nil {
t.Fatalf("err: %v", err)
}
resp := httptest.NewRecorder()
obj, err := srv.CoordinateDatacenters(resp, req)
if err != nil {
t.Fatalf("err: %v", err)
}
maps := obj.([]structs.DatacenterMap)
if len(maps) != 1 ||
maps[0].Datacenter != "dc1" ||
len(maps[0].Coordinates) != 1 ||
maps[0].Coordinates[0].Node != srv.agent.config.NodeName {
t.Fatalf("bad: %v", maps)
}
}
func TestCoordinate_Nodes(t *testing.T) {
dir, srv := makeHTTPServer(t)
defer os.RemoveAll(dir)
defer srv.Shutdown()
defer srv.agent.Shutdown()
testutil.WaitForLeader(t, srv.agent.RPC, "dc1")
// Make sure an empty list is non-nil.
req, err := http.NewRequest("GET", "/v1/coordinate/nodes?dc=dc1", nil)
if err != nil {
t.Fatalf("err: %v", err)
}
resp := httptest.NewRecorder()
obj, err := srv.CoordinateNodes(resp, req)
if err != nil {
t.Fatalf("err: %v", err)
}
coordinates := obj.(structs.Coordinates)
if coordinates == nil || len(coordinates) != 0 {
t.Fatalf("bad: %v", coordinates)
}
// Register the nodes.
nodes := []string{"foo", "bar"}
for _, node := range nodes {
req := structs.RegisterRequest{
Datacenter: "dc1",
Node: node,
Address: "127.0.0.1",
}
var reply struct{}
if err := srv.agent.RPC("Catalog.Register", &req, &reply); err != nil {
t.Fatalf("err: %s", err)
}
}
// Send some coordinates for a few nodes, waiting a little while for the
// batch update to run.
arg1 := structs.CoordinateUpdateRequest{
Datacenter: "dc1",
Node: "foo",
Coord: coordinate.NewCoordinate(coordinate.DefaultConfig()),
}
var out struct{}
if err := srv.agent.RPC("Coordinate.Update", &arg1, &out); err != nil {
t.Fatalf("err: %v", err)
}
arg2 := structs.CoordinateUpdateRequest{
Datacenter: "dc1",
Node: "bar",
Coord: coordinate.NewCoordinate(coordinate.DefaultConfig()),
}
if err := srv.agent.RPC("Coordinate.Update", &arg2, &out); err != nil {
t.Fatalf("err: %v", err)
}
time.Sleep(300 * time.Millisecond)
// Query back and check the nodes are present and sorted correctly.
req, err = http.NewRequest("GET", "/v1/coordinate/nodes?dc=dc1", nil)
if err != nil {
t.Fatalf("err: %v", err)
}
resp = httptest.NewRecorder()
obj, err = srv.CoordinateNodes(resp, req)
if err != nil {
t.Fatalf("err: %v", err)
}
coordinates = obj.(structs.Coordinates)
if len(coordinates) != 2 ||
coordinates[0].Node != "bar" ||
coordinates[1].Node != "foo" {
t.Fatalf("bad: %v", coordinates)
}
}