Esempio n. 1
0
// signalCatcher blocks until a signal is recieved and then takes appropriate action
func signalCatcher(server *server.Server, endpoint *http.HttpEndpoint, writeCPUprof bool, f *os.File) {
	sig_chan := make(chan os.Signal, 4)
	signal.Notify(sig_chan, os.Interrupt, syscall.SIGTERM)

	var s os.Signal
	select {
	case s = <-sig_chan:
	}
	if writeCPUprof {
		logging.Infop("Stopping CPU profiling...")
		pprof.StopCPUProfile()
	}
	if f != nil {
		logging.Infop("Stopping Memory profiling...")
		pprof.WriteHeapProfile(f)
		f.Close()
	}
	if s == os.Interrupt {
		// Interrupt (ctrl-C) => Immediate (ungraceful) exit
		logging.Infop("cbq-engine shutting down immediately...")
		os.Exit(0)
	}
	logging.Infop("cbq-engine attempting graceful...")
	// Stop accepting new requests
	endpoint.Close()
	// TODO: wait until server requests have all completed
}
Esempio n. 2
0
func (this *HttpEndpoint) Close() {
	if this.listener != nil {
		this.listener.Close()
		logging.Infop("HttpEndpoint.Close()", logging.Pair{"Address", this.listener.Addr()})
	}
	if this.listenerTLS != nil {
		this.listenerTLS.Close()
		logging.Infop("HttpEndpoint.Close()", logging.Pair{"Address", this.listener.Addr()})
	}
}
Esempio n. 3
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func TestStub(t *testing.T) {
	logger := NewLogger(os.Stdout, logging.Debug, false)
	logging.SetLogger(logger)

	logger.Infof("This is a message from %s", "test")
	logging.Infof("This is a message from %s", "test")
	logger.Infop("This is a message from ", logging.Pair{"name", "test"}, logging.Pair{"Queue Size", 10}, logging.Pair{"Debug Mode", false})
	logging.Infop("This is a message from ", logging.Pair{"name", "test"})

	logger.Infom("This is a message from ", logging.Map{"name": "test", "Queue Size": 10, "Debug Mode": false})
	logging.Infom("This is a message from ", logging.Map{"name": "test"})

	logger.Requestf(logging.Warn, "This is a Request from %s", "test")
	logging.Requestf(logging.Info, "This is a Request from %s", "test")
	logger.Requestp(logging.Debug, "This is a Request from ", logging.Pair{"name", "test"})
	logging.Requestp(logging.Error, "This is a Request from ", logging.Pair{"name", "test"})

	logger.SetLevel(logging.Warn)
	fmt.Printf("Log level is %s\n", logger.Level())

	logger.Requestf(logging.Warn, "This is a Request from %s", "test")
	logging.Requestf(logging.Info, "This is a Request from %s", "test")
	logger.Requestp(logging.Debug, "This is a Request from ", logging.Pair{"name", "test"})
	logging.Requestp(logging.Error, "This is a Request from ", logging.Pair{"name", "test"})

	logger.Warnf("This is a message from %s", "test")
	logging.Infof("This is a message from %s", "test")
	logger.Debugp("This is a message from ", logging.Pair{"name", "test"})
	logging.Errorp("This is a message from ", logging.Pair{"name", "test"})

	fmt.Printf("Changing to json formatter\n")
	logger.entryFormatter = &jsonFormatter{}
	logger.SetLevel(logging.Debug)

	logger.Infof("This is a message from %s", "test")
	logging.Infof("This is a message from %s", "test")
	logger.Infop("This is a message from ", logging.Pair{"name", "test"}, logging.Pair{"Queue Size", 10}, logging.Pair{"Debug Mode", false})
	logging.Infop("This is a message from ", logging.Pair{"name", "test"})

	logger.Infom("This is a message from ", logging.Map{"name": "test", "Queue Size": 10, "Debug Mode": false})
	logging.Infom("This is a message from ", logging.Map{"name": "test"})

	logger.Requestf(logging.Warn, "This is a Request from %s", "test")
	logging.Requestf(logging.Info, "This is a Request from %s", "test")
	logger.Requestp(logging.Debug, "This is a Request from ", logging.Pair{"name", "test"})
	logging.Requestp(logging.Error, "This is a Request from ", logging.Pair{"name", "test"})
}
Esempio n. 4
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func pollStdin() {
	reader := bufio.NewReader(os.Stdin)
	logging.Infop("pollEOF: About to start stdin polling")
	for {
		ch, err := reader.ReadByte()
		if err == io.EOF {
			logging.Infop("Received EOF; Exiting...")
			os.Exit(0)
		}
		if err != nil {
			logging.Errorp("Unexpected error polling stdin",
				logging.Pair{"error", err})
			os.Exit(1)
		}
		if ch == '\n' || ch == '\r' {
			logging.Infop("Received EOL; Exiting...")
			// TODO: "graceful" shutdown should be placed here
			os.Exit(0)
		}
	}
}
Esempio n. 5
0
func (this *Fetch) UnmarshalJSON(body []byte) error {
	var _unmarshalled struct {
		_     string `json:"#operator"`
		Proj  string `json:"projection"`
		Names string `json:"namespace"`
		Keys  string `json:"keyspace"`
		As    string `json:"as"`
	}
	var proj_expr expression.Path

	err := json.Unmarshal(body, &_unmarshalled)
	if err != nil {
		return err
	}

	if _unmarshalled.Proj != "" {
		expr, err := parser.Parse(_unmarshalled.Proj)

		logging.Infop("Fetch", logging.Pair{"_unmarshalled.Proj", _unmarshalled.Proj},
			logging.Pair{"err", err},
			logging.Pair{"expr", expr},
		)
		if err != nil {
			return err
		}

		_proj_expr, is_path := expr.(expression.Path)
		if !is_path {
			return fmt.Errorf("Fetch.UnmarshalJSON: cannot resolve path expression from %s", _unmarshalled.Proj)
		}
		proj_expr = _proj_expr
	}
	this.term = algebra.NewKeyspaceTerm(_unmarshalled.Names, _unmarshalled.Keys,
		proj_expr, _unmarshalled.As, nil)

	this.keyspace, err = datastore.GetKeyspace(_unmarshalled.Names, _unmarshalled.Keys)

	return err
}
Esempio n. 6
0
func main() {
	flag.Parse()

	var f *os.File
	if *MEM_PROFILE != "" {
		var err error
		f, err = os.Create(*MEM_PROFILE)
		if err != nil {
			fmt.Printf("Cannot start mem profiler %v\n", err)
		}
	}

	if *CPU_PROFILE != "" {
		f, err := os.Create(*CPU_PROFILE)
		if err != nil {
			fmt.Printf("Cannot start cpu profiler %v\n", err)
		} else {
			pprof.StartCPUProfile(f)
		}
	}

	if *LOGGER != "" {
		logger, _ := log_resolver.NewLogger(*LOGGER)
		if logger == nil {
			fmt.Printf("Invalid logger: %s\n", *LOGGER)
			os.Exit(1)
		}

		logging.SetLogger(logger)
	}

	if *DEBUG {
		logging.SetLevel(logging.Debug)
		logging.Debugp("Debug mode enabled")
	} else {
		logging.SetLevel(logging.Info)
	}

	datastore, err := resolver.NewDatastore(*DATASTORE)
	if err != nil {
		logging.Errorp(err.Error())
		os.Exit(1)
	}
	datastore_package.SetDatastore(datastore)

	configstore, err := config_resolver.NewConfigstore(*CONFIGSTORE)
	if err != nil {
		logging.Errorp("Could not connect to configstore",
			logging.Pair{"error", err},
		)
	}
	acctstore, err := acct_resolver.NewAcctstore(*ACCTSTORE)
	if err != nil {
		logging.Errorp("Could not connect to acctstore",
			logging.Pair{"error", err},
		)
	} else {
		// Create the metrics we are interested in
		accounting.RegisterMetrics(acctstore)
		// Make metrics available
		acctstore.MetricReporter().Start(1, 1)
	}

	keep_alive_length, e := util.ParseQuantity(*KEEP_ALIVE_LENGTH)

	if e != nil {
		logging.Errorp("Error parsing keep alive length; reverting to default",
			logging.Pair{"keep alive length", *KEEP_ALIVE_LENGTH},
			logging.Pair{"error", e},
			logging.Pair{"default", server.KEEP_ALIVE_DEFAULT},
		)
	}

	if e == nil && keep_alive_length < 1 {
		logging.Infop("Negative or zero keep alive length; reverting to default",
			logging.Pair{"keep alive length", *KEEP_ALIVE_LENGTH},
			logging.Pair{"default", server.KEEP_ALIVE_DEFAULT},
		)
	}

	channel := make(server.RequestChannel, *REQUEST_CAP)
	server, err := server.NewServer(datastore, configstore, acctstore, *NAMESPACE, *READONLY, channel,
		*THREAD_COUNT, *TIMEOUT, *SIGNATURE, *METRICS, keep_alive_length)
	if err != nil {
		logging.Errorp(err.Error())
		os.Exit(1)
	}

	go server.Serve()

	logging.Infop("cbq-engine started",
		logging.Pair{"version", VERSION},
		logging.Pair{"datastore", *DATASTORE},
	)
	// Create http endpoint
	endpoint := http.NewServiceEndpoint(server, *STATIC_PATH, *METRICS)
	er := endpoint.Listen(*HTTP_ADDR)
	if er != nil {
		logging.Errorp("cbq-engine exiting with error",
			logging.Pair{"error", er},
			logging.Pair{"HTTP_ADDR", *HTTP_ADDR},
		)
		os.Exit(1)
	}
	if *CERT_FILE != "" && *KEY_FILE != "" {
		er := endpoint.ListenTLS(*HTTPS_ADDR, *CERT_FILE, *KEY_FILE)
		if er != nil {
			logging.Errorp("cbq-engine exiting with error",
				logging.Pair{"error", er},
				logging.Pair{"HTTP_ADDR", *HTTP_ADDR},
			)
			os.Exit(1)
		}
	}
	signalCatcher(server, endpoint, *CPU_PROFILE != "", f)
}