// 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
}
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()})
}
}
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"})
}
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)
}
}
}
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
}
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)
}
