Merge pull request #4156 from hashicorp/enterprise-coexistence

Enterprise/Licensing Cleanup

.gitignore

@@ -5,6 +5,7 @@
 *.swp
 *.test
 .DS_Store
+.fseventsd
 .vagrant/
 /pkg
 Thumbs.db

agent/agent.go

@@ -73,6 +73,7 @@ type delegate interface {
 	SnapshotRPC(args *structs.SnapshotRequest, in io.Reader, out io.Writer, replyFn structs.SnapshotReplyFn) error
 	Shutdown() error
 	Stats() map[string]map[string]string
+	enterpriseDelegate
 }
 
 // notifier is called after a successful JoinLAN.

agent/consul/client.go

@@ -72,6 +72,9 @@ type Client struct {
 	shutdown     bool
 	shutdownCh   chan struct{}
 	shutdownLock sync.Mutex
+
+	// embedded struct to hold all the enterprise specific data
+	EnterpriseClient
 }
 
 // NewClient is used to construct a new Consul client from the
@@ -131,6 +134,11 @@ func NewClientLogger(config *Config, logger *log.Logger) (*Client, error) {
 		shutdownCh: make(chan struct{}),
 	}
 
+	if err := c.initEnterprise(); err != nil {
+		c.Shutdown()
+		return nil, err
+	}
+
 	// Initialize the LAN Serf
 	c.serf, err = c.setupSerf(config.SerfLANConfig,
 		c.eventCh, serfLANSnapshot)
@@ -147,6 +155,11 @@ func NewClientLogger(config *Config, logger *log.Logger) (*Client, error) {
 	// handlers depend on the router and the router depends on Serf.
 	go c.lanEventHandler()
 
+	if err := c.startEnterprise(); err != nil {
+		c.Shutdown()
+		return nil, err
+	}
+
 	return c, nil
 }
 
@@ -342,6 +355,17 @@ func (c *Client) Stats() map[string]map[string]string {
 		"serf_lan": c.serf.Stats(),
 		"runtime":  runtimeStats(),
 	}
+
+	for outerKey, outerValue := range c.enterpriseStats() {
+		if _, ok := stats[outerKey]; ok {
+			for innerKey, innerValue := range outerValue {
+				stats[outerKey][innerKey] = innerValue
+			}
+		} else {
+			stats[outerKey] = outerValue
+		}
+	}
+
 	return stats
 }
 

agent/consul/client_serf.go

@@ -135,6 +135,8 @@ func (c *Client) localEvent(event serf.UserEvent) {
 			c.config.UserEventHandler(event)
 		}
 	default:
-		c.logger.Printf("[WARN] consul: Unhandled local event: %v", event)
+		if !c.handleEnterpriseUserEvents(event) {
+			c.logger.Printf("[WARN] consul: Unhandled local event: %v", event)
+		}
 	}
 }

agent/consul/enterprise_client_oss.go

@@ -0,0 +1,25 @@
+// +build !ent
+
+package consul
+
+import (
+	"github.com/hashicorp/serf/serf"
+)
+
+type EnterpriseClient struct{}
+
+func (c *Client) initEnterprise() error {
+	return nil
+}
+
+func (c *Client) startEnterprise() error {
+	return nil
+}
+
+func (c *Client) handleEnterpriseUserEvents(event serf.UserEvent) bool {
+	return false
+}
+
+func (c *Client) enterpriseStats() map[string]map[string]string {
+	return nil
+}

agent/consul/enterprise_server_oss.go

@@ -0,0 +1,32 @@
+// +build !ent
+
+package consul
+
+import (
+	"net"
+
+	"github.com/hashicorp/consul/agent/pool"
+	"github.com/hashicorp/serf/serf"
+)
+
+type EnterpriseServer struct{}
+
+func (s *Server) initEnterprise() error {
+	return nil
+}
+
+func (s *Server) startEnterprise() error {
+	return nil
+}
+
+func (s *Server) handleEnterpriseUserEvents(event serf.UserEvent) bool {
+	return false
+}
+
+func (s *Server) handleEnterpriseRPCConn(rtype pool.RPCType, conn net.Conn, isTLS bool) bool {
+	return false
+}
+
+func (s *Server) enterpriseStats() map[string]map[string]string {
+	return nil
+}

agent/consul/rpc.go

@@ -115,9 +115,10 @@ func (s *Server) handleConn(conn net.Conn, isTLS bool) {
 		s.handleSnapshotConn(conn)
 
 	default:
-		s.logger.Printf("[ERR] consul.rpc: unrecognized RPC byte: %v %s", typ, logConn(conn))
-		conn.Close()
-		return
+		if !s.handleEnterpriseRPCConn(typ, conn, isTLS) {
+			s.logger.Printf("[ERR] consul.rpc: unrecognized RPC byte: %v %s", typ, logConn(conn))
+			conn.Close()
+		}
 	}
 }
 

agent/consul/server.go

@@ -208,6 +208,9 @@ type Server struct {
 	shutdown     bool
 	shutdownCh   chan struct{}
 	shutdownLock sync.Mutex
+
+	// embedded struct to hold all the enterprise specific data
+	EnterpriseServer
 }
 
 func NewServer(config *Config) (*Server, error) {
@@ -297,6 +300,12 @@ func NewServerLogger(config *Config, logger *log.Logger, tokens *token.Store) (*
 		shutdownCh:       shutdownCh,
 	}
 
+	// Initialize enterprise specific server functionality
+	if err := s.initEnterprise(); err != nil {
+		s.Shutdown()
+		return nil, err
+	}
+
 	// Initialize the stats fetcher that autopilot will use.
 	s.statsFetcher = NewStatsFetcher(logger, s.connPool, s.config.Datacenter)
 
@@ -338,6 +347,12 @@ func NewServerLogger(config *Config, logger *log.Logger, tokens *token.Store) (*
 		return nil, fmt.Errorf("Failed to start Raft: %v", err)
 	}
 
+	// Start enterprise specific functionality
+	if err := s.startEnterprise(); err != nil {
+		s.Shutdown()
+		return nil, err
+	}
+
 	// Serf and dynamic bind ports
 	//
 	// The LAN serf cluster announces the port of the WAN serf cluster
@@ -1019,6 +1034,17 @@ func (s *Server) Stats() map[string]map[string]string {
 	if s.serfWAN != nil {
 		stats["serf_wan"] = s.serfWAN.Stats()
 	}
+
+	for outerKey, outerValue := range s.enterpriseStats() {
+		if _, ok := stats[outerKey]; ok {
+			for innerKey, innerValue := range outerValue {
+				stats[outerKey][innerKey] = innerValue
+			}
+		} else {
+			stats[outerKey] = outerValue
+		}
+	}
+
 	return stats
 }
 

agent/consul/server_serf.go

@@ -198,7 +198,9 @@ func (s *Server) localEvent(event serf.UserEvent) {
 			s.config.UserEventHandler(event)
 		}
 	default:
-		s.logger.Printf("[WARN] consul: Unhandled local event: %v", event)
+		if !s.handleEnterpriseUserEvents(event) {
+			s.logger.Printf("[WARN] consul: Unhandled local event: %v", event)
+		}
 	}
 }
 

agent/enterprise_delegate_oss.go

@@ -0,0 +1,6 @@
+// +build !ent
+
+package agent
+
+// enterpriseDelegate has no functions in OSS
+type enterpriseDelegate interface{}

agent/http.go

@@ -31,6 +31,15 @@ func (e MethodNotAllowedError) Error() string {
 	return fmt.Sprintf("method %s not allowed", e.Method)
 }
 
+// BadRequestError should be returned by a handler when parameters or the payload are not valid
+type BadRequestError struct {
+	Reason string
+}
+
+func (e BadRequestError) Error() string {
+	return fmt.Sprintf("Bad request: %s", e.Reason)
+}
+
 // HTTPServer provides an HTTP api for an agent.
 type HTTPServer struct {
 	*http.Server
@@ -249,6 +258,11 @@ func (s *HTTPServer) wrap(handler endpoint, methods []string) http.HandlerFunc {
 			return ok
 		}
 
+		isBadRequest := func(err error) bool {
+			_, ok := err.(BadRequestError)
+			return ok
+		}
+
 		addAllowHeader := func(methods []string) {
 			resp.Header().Add("Allow", strings.Join(methods, ","))
 		}
@@ -269,6 +283,9 @@ func (s *HTTPServer) wrap(handler endpoint, methods []string) http.HandlerFunc {
 				addAllowHeader(err.(MethodNotAllowedError).Allow)
 				resp.WriteHeader(http.StatusMethodNotAllowed) // 405
 				fmt.Fprint(resp, err.Error())
+			case isBadRequest(err):
+				resp.WriteHeader(http.StatusBadRequest)
+				fmt.Fprint(resp, err.Error())
 			default:
 				resp.WriteHeader(http.StatusInternalServerError)
 				fmt.Fprint(resp, err.Error())

command/helpers/helpers.go

@@ -0,0 +1,42 @@
+package helpers
+
+import (
+	"bytes"
+	"fmt"
+	"io"
+	"io/ioutil"
+	"os"
+)
+
+func LoadDataSource(data string, testStdin io.Reader) (string, error) {
+	var stdin io.Reader = os.Stdin
+	if testStdin != nil {
+		stdin = testStdin
+	}
+
+	// Handle empty quoted shell parameters
+	if len(data) == 0 {
+		return "", nil
+	}
+
+	switch data[0] {
+	case '@':
+		data, err := ioutil.ReadFile(data[1:])
+		if err != nil {
+			return "", fmt.Errorf("Failed to read file: %s", err)
+		} else {
+			return string(data), nil
+		}
+	case '-':
+		if len(data) > 1 {
+			return data, nil
+		}
+		var b bytes.Buffer
+		if _, err := io.Copy(&b, stdin); err != nil {
+			return "", fmt.Errorf("Failed to read stdin: %s", err)
+		}
+		return b.String(), nil
+	default:
+		return data, nil
+	}
+}