Golang Cluster.URL方法代碼示例

func postFreeze(
	c cluster.Cluster, freeze bool, timeout time.Duration,
) (serverpb.ClusterFreezeResponse, error) {
	httpClient := cluster.HTTPClient
	httpClient.Timeout = timeout

	var resp serverpb.ClusterFreezeResponse
	log.Infof(context.Background(), "requesting: freeze=%t, timeout=%s", freeze, timeout)
	cb := func(v proto.Message) {
		oldNum := resp.RangesAffected
		resp = *v.(*serverpb.ClusterFreezeResponse)
		if oldNum > resp.RangesAffected {
			resp.RangesAffected = oldNum
		}
		if (resp != serverpb.ClusterFreezeResponse{}) {
			log.Infof(context.Background(), "%+v", &resp)
		}
	}
	err := httputil.StreamJSON(
		httpClient,
		c.URL(0)+"/_admin/v1/cluster/freeze",
		&serverpb.ClusterFreezeRequest{Freeze: freeze},
		&serverpb.ClusterFreezeResponse{},
		cb,
	)
	return resp, err
}

func testBuildInfoInner(t *testing.T, c cluster.Cluster, cfg cluster.TestConfig) {
	checkGossip(t, c, 20*time.Second, hasPeers(c.NumNodes()))

	var details serverpb.DetailsResponse
	util.SucceedsSoon(t, func() error {
		select {
		case <-stopper:
			t.Fatalf("interrupted")
		default:
		}
		return httputil.GetJSON(cluster.HTTPClient, c.URL(0)+"/_status/details/local", &details)
	})

	bi := details.BuildInfo
	testData := map[string]string{
		"go_version":   bi.GoVersion,
		"tag":          bi.Tag,
		"time":         bi.Time,
		"dependencies": bi.Dependencies,
	}
	for key, val := range testData {
		if val == "" {
			t.Errorf("build info not set for \"%s\"", key)
		}
	}
}

// CheckGossip fetches the gossip infoStore from each node and invokes the given
// function. The test passes if the function returns 0 for every node,
// retrying for up to the given duration.
func CheckGossip(
	ctx context.Context, t testing.TB, c cluster.Cluster, d time.Duration, f CheckGossipFunc,
) {
	err := util.RetryForDuration(d, func() error {
		select {
		case <-stopper.ShouldStop():
			t.Fatalf("interrupted")
			return nil
		case <-time.After(1 * time.Second):
		}

		var infoStatus gossip.InfoStatus
		for i := 0; i < c.NumNodes(); i++ {
			if err := httputil.GetJSON(cluster.HTTPClient, c.URL(ctx, i)+"/_status/gossip/local", &infoStatus); err != nil {
				return errors.Wrapf(err, "failed to get gossip status from node %d", i)
			}
			if err := f(infoStatus.Infos); err != nil {
				return errors.Errorf("node %d: %s", i, err)
			}
		}

		return nil
	})
	if err != nil {
		t.Fatal(errors.Errorf("condition failed to evaluate within %s: %s", d, err))
	}
}

// checkGossip fetches the gossip infoStore from each node and invokes the given
// function. The test passes if the function returns 0 for every node,
// retrying for up to the given duration.
func checkGossip(t *testing.T, c cluster.Cluster, d time.Duration, f checkGossipFunc) {
	err := util.RetryForDuration(d, func() error {
		select {
		case <-stopper:
			t.Fatalf("interrupted")
			return nil
		case <-time.After(1 * time.Second):
		}

		var infoStatus gossip.InfoStatus
		for i := 0; i < c.NumNodes(); i++ {
			if err := httputil.GetJSON(cluster.HTTPClient, c.URL(i)+"/_status/gossip/local", &infoStatus); err != nil {
				return err
			}
			if err := f(infoStatus.Infos); err != nil {
				return errors.Errorf("node %d: %s", i, err)
			}
		}

		return nil
	})
	if err != nil {
		t.Fatal(errors.Errorf("condition failed to evaluate within %s: %s", d, err))
	}
}

func testAdminLossOfQuorumInner(
	ctx context.Context, t *testing.T, c cluster.Cluster, cfg cluster.TestConfig,
) {
	if c.NumNodes() < 2 {
		t.Logf("skipping test %s because given cluster has too few nodes", cfg.Name)
		return
	}

	// Get the ids for each node.
	nodeIDs := make([]roachpb.NodeID, c.NumNodes())
	for i := 0; i < c.NumNodes(); i++ {
		var details serverpb.DetailsResponse
		if err := httputil.GetJSON(cluster.HTTPClient, c.URL(ctx, i)+"/_status/details/local", &details); err != nil {
			t.Fatalf("failed to get local details from node %d: %s", i, err)
		}
		nodeIDs[i] = details.NodeID
	}

	// Leave only the first node alive.
	for i := 1; i < c.NumNodes(); i++ {
		if err := c.Kill(ctx, i); err != nil {
			t.Fatal(err)
		}
	}

	// Retrieve node statuses.
	var nodes serverpb.NodesResponse
	if err := httputil.GetJSON(cluster.HTTPClient, c.URL(ctx, 0)+"/_status/nodes", &nodes); err != nil {
		t.Fatal(err)
	}

	for _, nodeID := range nodeIDs {
		var nodeStatus status.NodeStatus
		if err := httputil.GetJSON(cluster.HTTPClient, c.URL(ctx, 0)+"/_status/nodes/"+strconv.Itoa(int(nodeID)), &nodeStatus); err != nil {
			t.Fatal(err)
		}
	}

	// Retrieve time-series data.
	nowNanos := timeutil.Now().UnixNano()
	queryRequest := tspb.TimeSeriesQueryRequest{
		StartNanos: nowNanos - 10*time.Second.Nanoseconds(),
		EndNanos:   nowNanos,
		Queries: []tspb.Query{
			{Name: "doesn't_matter", Sources: []string{}},
		},
	}
	var queryResponse tspb.TimeSeriesQueryResponse
	if err := httputil.PostJSON(cluster.HTTPClient, c.URL(ctx, 0)+"/ts/query",
		&queryRequest, &queryResponse); err != nil {
		t.Fatal(err)
	}

	// TODO(cdo): When we're able to issue SQL queries without a quorum, test all
	// admin endpoints that issue SQL queries here.
}