package agent import ( "fmt" "net/http" "strings" "github.com/hashicorp/consul/api" "github.com/hashicorp/consul/consul/structs" ) func (s *HTTPServer) HealthChecksInState(resp http.ResponseWriter, req *http.Request) (interface{}, error) { // Set default DC args := structs.ChecksInStateRequest{} s.parseSource(req, &args.Source) args.NodeMetaFilters = s.parseMetaFilter(req) if done := s.parse(resp, req, &args.Datacenter, &args.QueryOptions); done { return nil, nil } // Pull out the service name args.State = strings.TrimPrefix(req.URL.Path, "/v1/health/state/") if args.State == "" { resp.WriteHeader(400) fmt.Fprint(resp, "Missing check state") return nil, nil } // Make the RPC request var out structs.IndexedHealthChecks defer setMeta(resp, &out.QueryMeta) if err := s.agent.RPC("Health.ChecksInState", &args, &out); err != nil { return nil, err } // Use empty list instead of nil if out.HealthChecks == nil { out.HealthChecks = make(structs.HealthChecks, 0) } for _, c := range out.HealthChecks { if c.ServiceTags == nil { c.ServiceTags = make([]string, 0) } } return out.HealthChecks, nil } func (s *HTTPServer) HealthNodeChecks(resp http.ResponseWriter, req *http.Request) (interface{}, error) { // Set default DC args := structs.NodeSpecificRequest{} if done := s.parse(resp, req, &args.Datacenter, &args.QueryOptions); done { return nil, nil } // Pull out the service name args.Node = strings.TrimPrefix(req.URL.Path, "/v1/health/node/") if args.Node == "" { resp.WriteHeader(400) fmt.Fprint(resp, "Missing node name") return nil, nil } // Make the RPC request var out structs.IndexedHealthChecks defer setMeta(resp, &out.QueryMeta) if err := s.agent.RPC("Health.NodeChecks", &args, &out); err != nil { return nil, err } // Use empty list instead of nil if out.HealthChecks == nil { out.HealthChecks = make(structs.HealthChecks, 0) } for _, c := range out.HealthChecks { if c.ServiceTags == nil { c.ServiceTags = make([]string, 0) } } return out.HealthChecks, nil } func (s *HTTPServer) HealthServiceChecks(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 } // Pull out the service name args.ServiceName = strings.TrimPrefix(req.URL.Path, "/v1/health/checks/") if args.ServiceName == "" { resp.WriteHeader(400) fmt.Fprint(resp, "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) } for _, c := range out.HealthChecks { if c.ServiceTags == nil { c.ServiceTags = make([]string, 0) } } return out.HealthChecks, nil } 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) fmt.Fprint(resp, "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[api.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 if out.Nodes == nil { out.Nodes = make(structs.CheckServiceNodes, 0) } 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) } for _, c := range out.Nodes[i].Checks { if c.ServiceTags == nil { c.ServiceTags = make([]string, 0) } } if out.Nodes[i].Service != nil && out.Nodes[i].Service.Tags == nil { out.Nodes[i].Service.Tags = make([]string, 0) } } return out.Nodes, nil } // filterNonPassing is used to filter out any nodes that have check that are not passing func filterNonPassing(nodes structs.CheckServiceNodes) structs.CheckServiceNodes { n := len(nodes) OUTER: for i := 0; i < n; i++ { node := nodes[i] for _, check := range node.Checks { if check.Status != api.HealthPassing { nodes[i], nodes[n-1] = nodes[n-1], structs.CheckServiceNode{} n-- i-- continue OUTER } } } return nodes[:n] }