Golang structs.ServiceSpecificRequest类代码示例

func TestHealth_ServiceNodes_FilterACL(t *testing.T) {
	dir, token, srv, codec := testACLFilterServer(t)
	defer os.RemoveAll(dir)
	defer srv.Shutdown()
	defer codec.Close()

	opt := structs.ServiceSpecificRequest{
		Datacenter:   "dc1",
		ServiceName:  "foo",
		QueryOptions: structs.QueryOptions{Token: token},
	}
	reply := structs.IndexedCheckServiceNodes{}
	if err := msgpackrpc.CallWithCodec(codec, "Health.ServiceNodes", &opt, &reply); err != nil {
		t.Fatalf("err: %s", err)
	}
	if len(reply.Nodes) != 1 {
		t.Fatalf("bad: %#v", reply.Nodes)
	}

	opt.ServiceName = "bar"
	reply = structs.IndexedCheckServiceNodes{}
	if err := msgpackrpc.CallWithCodec(codec, "Health.ServiceNodes", &opt, &reply); err != nil {
		t.Fatalf("err: %s", err)
	}
	if len(reply.Nodes) != 0 {
		t.Fatalf("bad: %#v", reply.Nodes)
	}
}

func (s *HTTPServer) HealthServiceNodes(resp http.ResponseWriter, req *http.Request) (uint64, interface{}, error) {
	// Set default DC
	args := structs.ServiceSpecificRequest{}
	if done := s.parse(resp, req, &args.Datacenter, &args.BlockingQuery); done {
		return 0, nil, nil
	}

	// Check for a tag
	params := req.URL.Query()
	if _, ok := params["tag"]; ok {
		args.ServiceTag = params.Get("tag")
		args.TagFilter = true
	}

	// Pull out the service name
	args.ServiceName = strings.TrimPrefix(req.URL.Path, "/v1/health/service/")
	if args.ServiceName == "" {
		resp.WriteHeader(400)
		resp.Write([]byte("Missing service name"))
		return 0, nil, nil
	}

	// Make the RPC request
	var out structs.IndexedCheckServiceNodes
	if err := s.agent.RPC("Health.ServiceNodes", &args, &out); err != nil {
		return 0, nil, err
	}
	return out.Index, out.Nodes, nil
}

func TestHealth_ServiceChecks_FilterACL(t *testing.T) {
	dir, token, srv, codec := testACLFilterServer(t)
	defer os.RemoveAll(dir)
	defer srv.Shutdown()
	defer codec.Close()

	opt := structs.ServiceSpecificRequest{
		Datacenter:   "dc1",
		ServiceName:  "foo",
		QueryOptions: structs.QueryOptions{Token: token},
	}
	reply := structs.IndexedHealthChecks{}
	if err := msgpackrpc.CallWithCodec(codec, "Health.ServiceChecks", &opt, &reply); err != nil {
		t.Fatalf("err: %s", err)
	}
	found := false
	for _, chk := range reply.HealthChecks {
		if chk.ServiceName == "foo" {
			found = true
			break
		}
	}
	if !found {
		t.Fatalf("bad: %#v", reply.HealthChecks)
	}

	opt.ServiceName = "bar"
	reply = structs.IndexedHealthChecks{}
	if err := msgpackrpc.CallWithCodec(codec, "Health.ServiceChecks", &opt, &reply); err != nil {
		t.Fatalf("err: %s", err)
	}
	if len(reply.HealthChecks) != 0 {
		t.Fatalf("bad: %#v", reply.HealthChecks)
	}
}

func (s *HTTPServer) HealthServiceChecks(resp http.ResponseWriter, req *http.Request) (interface{}, error) {
	// Set default DC
	args := structs.ServiceSpecificRequest{}
	s.parseSource(req, &args.Source)
	if done := s.parse(resp, req, &args.Datacenter, &args.QueryOptions); done {
		return nil, nil
	}

	// Pull out the service name
	args.ServiceName = strings.TrimPrefix(req.URL.Path, "/v1/health/checks/")
	if args.ServiceName == "" {
		resp.WriteHeader(400)
		resp.Write([]byte("Missing service name"))
		return nil, nil
	}

	// Make the RPC request
	var out structs.IndexedHealthChecks
	defer setMeta(resp, &out.QueryMeta)
	if err := s.agent.RPC("Health.ServiceChecks", &args, &out); err != nil {
		return nil, err
	}

	// Use empty list instead of nil
	if out.HealthChecks == nil {
		out.HealthChecks = make(structs.HealthChecks, 0)
	}
	return out.HealthChecks, nil
}

// serviceLookup is used to handle a service query
func (d *DNSServer) serviceLookup(network, datacenter, service, tag string, req, resp *dns.Msg) {
	// Make an RPC request
	args := structs.ServiceSpecificRequest{
		Datacenter:   datacenter,
		ServiceName:  service,
		ServiceTag:   tag,
		TagFilter:    tag != "",
		QueryOptions: structs.QueryOptions{AllowStale: d.config.AllowStale},
	}
	var out structs.IndexedCheckServiceNodes
RPC:
	if err := d.agent.RPC("Health.ServiceNodes", &args, &out); err != nil {
		d.logger.Printf("[ERR] dns: rpc error: %v", err)
		resp.SetRcode(req, dns.RcodeServerFailure)
		return
	}

	// Verify that request is not too stale, redo the request
	if args.AllowStale && out.LastContact > d.config.MaxStale {
		args.AllowStale = false
		d.logger.Printf("[WARN] dns: Query results too stale, re-requesting")
		goto RPC
	}

	// If we have no nodes, return not found!
	if len(out.Nodes) == 0 {
		resp.SetRcode(req, dns.RcodeNameError)
		return
	}

	// Determine the TTL
	var ttl time.Duration
	if d.config.ServiceTTL != nil {
		var ok bool
		ttl, ok = d.config.ServiceTTL[service]
		if !ok {
			ttl = d.config.ServiceTTL["*"]
		}
	}

	// Filter out any service nodes due to health checks
	out.Nodes = d.filterServiceNodes(out.Nodes)

	// Perform a random shuffle
	shuffleServiceNodes(out.Nodes)

	// If the network is not TCP, restrict the number of responses
	if network != "tcp" && len(out.Nodes) > maxServiceResponses {
		out.Nodes = out.Nodes[:maxServiceResponses]
	}

	// Add various responses depending on the request
	qType := req.Question[0].Qtype
	d.serviceNodeRecords(out.Nodes, req, resp, ttl)

	if qType == dns.TypeSRV {
		d.serviceSRVRecords(datacenter, out.Nodes, req, resp, ttl)
	}
}

func (s *HTTPServer) HealthServiceNodes(resp http.ResponseWriter, req *http.Request) (interface{}, error) {
	// Set default DC
	args := structs.ServiceSpecificRequest{}
	s.parseSource(req, &args.Source)
	args.NodeMetaFilters = s.parseMetaFilter(req)
	if done := s.parse(resp, req, &args.Datacenter, &args.QueryOptions); done {
		return nil, nil
	}

	// Check for a tag
	params := req.URL.Query()
	if _, ok := params["tag"]; ok {
		args.ServiceTag = params.Get("tag")
		args.TagFilter = true
	}

	// Pull out the service name
	args.ServiceName = strings.TrimPrefix(req.URL.Path, "/v1/health/service/")
	if args.ServiceName == "" {
		resp.WriteHeader(400)
		resp.Write([]byte("Missing service name"))
		return nil, nil
	}

	// Make the RPC request
	var out structs.IndexedCheckServiceNodes
	defer setMeta(resp, &out.QueryMeta)
	if err := s.agent.RPC("Health.ServiceNodes", &args, &out); err != nil {
		return nil, err
	}

	// Filter to only passing if specified
	if _, ok := params[structs.HealthPassing]; ok {
		out.Nodes = filterNonPassing(out.Nodes)
	}

	// Translate addresses after filtering so we don't waste effort.
	translateAddresses(s.agent.config, args.Datacenter, out.Nodes)

	// Use empty list instead of nil
	for i, _ := range out.Nodes {
		// TODO (slackpad) It's lame that this isn't a slice of pointers
		// but it's not a well-scoped change to fix this. We should
		// change this at the next opportunity.
		if out.Nodes[i].Checks == nil {
			out.Nodes[i].Checks = make(structs.HealthChecks, 0)
		}
	}
	if out.Nodes == nil {
		out.Nodes = make(structs.CheckServiceNodes, 0)
	}

	return out.Nodes, nil
}

func TestCatalogListServiceNodes(t *testing.T) {
	dir1, s1 := testServer(t)
	defer os.RemoveAll(dir1)
	defer s1.Shutdown()
	codec := rpcClient(t, s1)
	defer codec.Close()

	args := structs.ServiceSpecificRequest{
		Datacenter:  "dc1",
		ServiceName: "db",
		ServiceTag:  "slave",
		TagFilter:   false,
	}
	var out structs.IndexedServiceNodes
	err := msgpackrpc.CallWithCodec(codec, "Catalog.ServiceNodes", &args, &out)
	if err == nil || err.Error() != "No cluster leader" {
		t.Fatalf("err: %v", err)
	}

	testutil.WaitForLeader(t, s1.RPC, "dc1")

	// Just add a node
	if err := s1.fsm.State().EnsureNode(1, &structs.Node{Node: "foo", Address: "127.0.0.1"}); err != nil {
		t.Fatalf("err: %v", err)
	}
	if err := s1.fsm.State().EnsureService(2, "foo", &structs.NodeService{ID: "db", Service: "db", Tags: []string{"primary"}, Address: "127.0.0.1", Port: 5000}); err != nil {
		t.Fatalf("err: %v", err)
	}

	if err := msgpackrpc.CallWithCodec(codec, "Catalog.ServiceNodes", &args, &out); err != nil {
		t.Fatalf("err: %v", err)
	}

	if len(out.ServiceNodes) != 1 {
		t.Fatalf("bad: %v", out)
	}

	// Try with a filter
	args.TagFilter = true
	out = structs.IndexedServiceNodes{}

	if err := msgpackrpc.CallWithCodec(codec, "Catalog.ServiceNodes", &args, &out); err != nil {
		t.Fatalf("err: %v", err)
	}
	if len(out.ServiceNodes) != 0 {
		t.Fatalf("bad: %v", out)
	}
}

func TestCatalogListServiceNodes(t *testing.T) {
	dir1, s1 := testServer(t)
	defer os.RemoveAll(dir1)
	defer s1.Shutdown()
	client := rpcClient(t, s1)
	defer client.Close()

	args := structs.ServiceSpecificRequest{
		Datacenter:  "dc1",
		ServiceName: "db",
		ServiceTag:  "slave",
		TagFilter:   false,
	}
	var out structs.IndexedServiceNodes
	err := client.Call("Catalog.ServiceNodes", &args, &out)
	if err == nil || err.Error() != "No cluster leader" {
		t.Fatalf("err: %v", err)
	}

	// Wait for leader
	time.Sleep(100 * time.Millisecond)

	// Just add a node
	s1.fsm.State().EnsureNode(1, structs.Node{"foo", "127.0.0.1"})
	s1.fsm.State().EnsureService(2, "foo", &structs.NodeService{"db", "db", []string{"primary"}, 5000})

	if err := client.Call("Catalog.ServiceNodes", &args, &out); err != nil {
		t.Fatalf("err: %v", err)
	}

	if len(out.ServiceNodes) != 1 {
		t.Fatalf("bad: %v", out)
	}

	// Try with a filter
	args.TagFilter = true
	out = structs.IndexedServiceNodes{}

	if err := client.Call("Catalog.ServiceNodes", &args, &out); err != nil {
		t.Fatalf("err: %v", err)
	}
	if len(out.ServiceNodes) != 0 {
		t.Fatalf("bad: %v", out)
	}
}

func (s *HTTPServer) HealthServiceNodes(resp http.ResponseWriter, req *http.Request) (interface{}, error) {
	// Set default DC
	args := structs.ServiceSpecificRequest{}
	if done := s.parse(resp, req, &args.Datacenter, &args.QueryOptions); done {
		return nil, nil
	}

	// Check for a tag
	params := req.URL.Query()
	if _, ok := params["tag"]; ok {
		args.ServiceTag = params.Get("tag")
		args.TagFilter = true
	}

	// Pull out the service name
	args.ServiceName = strings.TrimPrefix(req.URL.Path, "/v1/health/service/")
	if args.ServiceName == "" {
		resp.WriteHeader(400)
		resp.Write([]byte("Missing service name"))
		return nil, nil
	}

	// Make the RPC request
	var out structs.IndexedCheckServiceNodes
	defer setMeta(resp, &out.QueryMeta)
	if err := s.agent.RPC("Health.ServiceNodes", &args, &out); err != nil {
		return nil, err
	}

	// Filter by state if specified
	if _, passing := params[structs.HealthPassing]; passing {
		out.Nodes = filterByState(out.Nodes, structs.HealthPassing)
	} else if _, warning := params[structs.HealthWarning]; warning {
		out.Nodes = filterByState(out.Nodes, structs.HealthWarning)
	} else if _, critical := params[structs.HealthCritical]; critical {
		out.Nodes = filterByState(out.Nodes, structs.HealthCritical)
	} else if _, unknown := params[structs.HealthUnknown]; unknown {
		out.Nodes = filterByState(out.Nodes, structs.HealthUnknown)
	}

	return out.Nodes, nil
}

func (s *HTTPServer) HealthServiceChecks(resp http.ResponseWriter, req *http.Request) (uint64, interface{}, error) {
	// Set default DC
	args := structs.ServiceSpecificRequest{}
	if done := s.parse(resp, req, &args.Datacenter, &args.BlockingQuery); done {
		return 0, nil, nil
	}

	// Pull out the service name
	args.ServiceName = strings.TrimPrefix(req.URL.Path, "/v1/health/checks/")
	if args.ServiceName == "" {
		resp.WriteHeader(400)
		resp.Write([]byte("Missing service name"))
		return 0, nil, nil
	}

	// Make the RPC request
	var out structs.IndexedHealthChecks
	if err := s.agent.RPC("Health.ServiceChecks", &args, &out); err != nil {
		return 0, nil, err
	}
	return out.Index, out.HealthChecks, nil
}

func (s *HTTPServer) CatalogServiceNodes(resp http.ResponseWriter, req *http.Request) (interface{}, error) {
	// Set default DC
	args := structs.ServiceSpecificRequest{}
	s.parseSource(req, &args.Source)
	args.NodeMetaFilters = s.parseMetaFilter(req)
	if done := s.parse(resp, req, &args.Datacenter, &args.QueryOptions); done {
		return nil, nil
	}

	// Check for a tag
	params := req.URL.Query()
	if _, ok := params["tag"]; ok {
		args.ServiceTag = params.Get("tag")
		args.TagFilter = true
	}

	// Pull out the service name
	args.ServiceName = strings.TrimPrefix(req.URL.Path, "/v1/catalog/service/")
	if args.ServiceName == "" {
		resp.WriteHeader(400)
		resp.Write([]byte("Missing service name"))
		return nil, nil
	}

	// Make the RPC request
	var out structs.IndexedServiceNodes
	defer setMeta(resp, &out.QueryMeta)
	if err := s.agent.RPC("Catalog.ServiceNodes", &args, &out); err != nil {
		return nil, err
	}
	translateAddresses(s.agent.config, args.Datacenter, out.ServiceNodes)

	// Use empty list instead of nil
	if out.ServiceNodes == nil {
		out.ServiceNodes = make(structs.ServiceNodes, 0)
	}
	return out.ServiceNodes, nil
}

func (s *HTTPServer) HealthServiceNodes(resp http.ResponseWriter, req *http.Request) (interface{}, error) {
	// Set default DC
	args := structs.ServiceSpecificRequest{}
	s.parseSource(req, &args.Source)
	if done := s.parse(resp, req, &args.Datacenter, &args.QueryOptions); done {
		return nil, nil
	}

	// Check for a tag
	params := req.URL.Query()
	if _, ok := params["tag"]; ok {
		args.ServiceTag = params.Get("tag")
		args.TagFilter = true
	}

	// Pull out the service name
	args.ServiceName = strings.TrimPrefix(req.URL.Path, "/v1/health/service/")
	if args.ServiceName == "" {
		resp.WriteHeader(400)
		resp.Write([]byte("Missing service name"))
		return nil, nil
	}

	// Make the RPC request
	var out structs.IndexedCheckServiceNodes
	defer setMeta(resp, &out.QueryMeta)
	if err := s.agent.RPC("Health.ServiceNodes", &args, &out); err != nil {
		return nil, err
	}

	// Filter to only passing if specified
	if _, ok := params["passing"]; ok {
		out.Nodes = filterNonPassing(out.Nodes)
	}
	return out.Nodes, nil
}

// serviceLookup is used to handle a service query
func (d *DNSServer) serviceLookup(network, datacenter, service, tag string, req, resp *dns.Msg) {
	// Make an RPC request
	args := structs.ServiceSpecificRequest{
		Datacenter:  datacenter,
		ServiceName: service,
		ServiceTag:  tag,
		TagFilter:   tag != "",
		QueryOptions: structs.QueryOptions{
			Token:      d.agent.config.ACLToken,
			AllowStale: *d.config.AllowStale,
		},
	}
	var out structs.IndexedCheckServiceNodes
RPC:
	if err := d.agent.RPC("Health.ServiceNodes", &args, &out); err != nil {
		d.logger.Printf("[ERR] dns: rpc error: %v", err)
		resp.SetRcode(req, dns.RcodeServerFailure)
		return
	}

	// Verify that request is not too stale, redo the request
	if args.AllowStale && out.LastContact > d.config.MaxStale {
		args.AllowStale = false
		d.logger.Printf("[WARN] dns: Query results too stale, re-requesting")
		goto RPC
	}

	// Determine the TTL
	var ttl time.Duration
	if d.config.ServiceTTL != nil {
		var ok bool
		ttl, ok = d.config.ServiceTTL[service]
		if !ok {
			ttl = d.config.ServiceTTL["*"]
		}
	}

	// Filter out any service nodes due to health checks
	out.Nodes = out.Nodes.Filter(d.config.OnlyPassing)

	// If we have no nodes, return not found!
	if len(out.Nodes) == 0 {
		d.addSOA(d.domain, resp)
		resp.SetRcode(req, dns.RcodeNameError)
		return
	}

	// Perform a random shuffle
	out.Nodes.Shuffle()

	// Add various responses depending on the request
	qType := req.Question[0].Qtype
	if qType == dns.TypeSRV {
		d.serviceSRVRecords(datacenter, out.Nodes, req, resp, ttl)
	} else {
		d.serviceNodeRecords(datacenter, out.Nodes, req, resp, ttl)
	}

	// If the network is not TCP, restrict the number of responses
	if network != "tcp" {
		wasTrimmed := trimUDPResponse(d.config, resp)

		// Flag that there are more records to return in the UDP response
		if wasTrimmed && d.config.EnableTruncate {
			resp.Truncated = true
		}
	}

	// If the answer is empty and the response isn't truncated, return not found
	if len(resp.Answer) == 0 && !resp.Truncated {
		d.addSOA(d.domain, resp)
		return
	}
}