Exemplo n.º 1
0
func requestType(stmt string, prepared *plan.Prepared) string {
	var tokens []string

	// FIXME - this is a proper hack! should be using algebra.Statement
	// or something similar to determine the statement type!
	if prepared != nil && prepared.Text() != "" {
		// Second or fourth token determines type of statement
		tokens = strings.Split(strings.TrimSpace(prepared.Text()), " ")[1:]
	} else {
		if stmt != "" {
			// First token determines type of statement
			tokens = strings.Split(strings.TrimSpace(stmt), " ")[0:1]
		}
	}

	for _, token := range tokens {
		switch strings.ToLower(token) {
		case "select":
			return SELECTS
		case "update":
			return UPDATES
		case "insert":
			return INSERTS
		case "delete":
			return DELETES
		}
	}
	return UNKNOWN
}
Exemplo n.º 2
0
func LogRequest(acctstore AccountingStore,
	request_time time.Duration, service_time time.Duration,
	result_count int, result_size int,
	error_count int, warn_count int, stmt string,
	sort_count uint64, plan *plan.Prepared, id string) {

	if requestLog.threshold >= 0 && request_time < time.Millisecond*requestLog.threshold {
		return
	}

	rv := &RequestLogEntry{
		RequestId:   id,
		ElapsedTime: request_time,
		ServiceTime: service_time,
		ResultCount: result_count,
		ResultSize:  result_size,
		ErrorCount:  error_count,
		SortCount:   sort_count,
		Time:        time.Now(),
	}
	if stmt != "" {
		rv.Statement = stmt
	}
	if plan != nil {
		rv.PreparedName = plan.Name()
		rv.PreparedText = plan.Text()
	}
	requestLog.add(rv)
}
Exemplo n.º 3
0
func newHttpRequest(resp http.ResponseWriter, req *http.Request, bp BufferPool, size int) *httpRequest {
	var httpArgs httpRequestArgs
	var err errors.Error

	// Limit body size in case of denial-of-service attack
	req.Body = http.MaxBytesReader(resp, req.Body, int64(size))

	e := req.ParseForm()
	if e != nil {
		err = errors.NewServiceErrorBadValue(e, "request form")
	}

	if err != nil && req.Method != "GET" && req.Method != "POST" {
		err = errors.NewServiceErrorHTTPMethod(req.Method)
	}

	err = contentNegotiation(resp, req)

	if err == nil {
		httpArgs, err = getRequestParams(req)
	}

	var statement string
	if err == nil {
		statement, err = httpArgs.getStatement()
	}

	var prepared *plan.Prepared

	if err == nil {
		prepared, err = getPrepared(httpArgs)
		plan, plan_err := getEncodedPlan(httpArgs)
		if err != nil && err.Code() == errors.NO_SUCH_PREPARED {
			if plan_err != nil {
				err = plan_err
			}
			if plan_err == nil && plan != nil {
				prepared = plan
				err = nil
			}
		}
		if err == nil && plan_err != nil {
			err = plan_err
		}
		if prepared != nil && plan != nil && prepared.EncodedPlan() != plan.EncodedPlan() {
			err = errors.NewPreparedEncodingMismatchError(prepared.Name())
		}
	}

	if err == nil && statement == "" && prepared == nil {
		err = errors.NewServiceErrorMissingValue("statement or prepared")
	}

	var namedArgs map[string]value.Value
	if err == nil {
		namedArgs, err = httpArgs.getNamedArgs()
	}

	var positionalArgs value.Values
	if err == nil {
		positionalArgs, err = httpArgs.getPositionalArgs()
	}

	var namespace string
	if err == nil {
		namespace, err = httpArgs.getString(NAMESPACE, "")
	}

	var timeout time.Duration
	if err == nil {
		timeout, err = httpArgs.getDuration(TIMEOUT)
	}

	var max_parallelism int
	if err == nil {
		var maxp string
		maxp, err = httpArgs.getString(MAX_PARALLELISM, "")
		if err == nil && maxp != "" {
			var e error
			max_parallelism, e = strconv.Atoi(maxp)
			if e != nil {
				err = errors.NewServiceErrorBadValue(e, "max parallelism")
			}
		}
	}

	var readonly value.Tristate
	if err == nil {
		readonly, err = getReadonly(httpArgs, req.Method == "GET")
	}

	var metrics value.Tristate
	if err == nil {
		metrics, err = httpArgs.getTristate(METRICS)
	}

	var format Format
	if err == nil {
		format, err = getFormat(httpArgs)
	}

	if err == nil && format != JSON {
		err = errors.NewServiceErrorNotImplemented("format", format.String())
	}

	var signature value.Tristate
	if err == nil {
		signature, err = httpArgs.getTristate(SIGNATURE)
	}

	var compression Compression
	if err == nil {
		compression, err = getCompression(httpArgs)
	}

	if err == nil && compression != NONE {
		err = errors.NewServiceErrorNotImplemented("compression", compression.String())
	}

	var encoding Encoding
	if err == nil {
		encoding, err = getEncoding(httpArgs)
	}

	if err == nil && encoding != UTF8 {
		err = errors.NewServiceErrorNotImplemented("encoding", encoding.String())
	}

	var pretty value.Tristate
	if err == nil {
		pretty, err = httpArgs.getTristate(PRETTY)
	}

	if err == nil && pretty == value.FALSE {
		err = errors.NewServiceErrorNotImplemented("pretty", "false")
	}

	var consistency *scanConfigImpl

	if err == nil {
		consistency, err = getScanConfiguration(httpArgs)
	}

	var creds datastore.Credentials
	if err == nil {
		creds, err = getCredentials(httpArgs, req.Header["Authorization"])
	}

	client_id := ""
	if err == nil {
		client_id, err = getClientID(httpArgs)
	}

	base := server.NewBaseRequest(statement, prepared, namedArgs, positionalArgs, namespace,
		max_parallelism, readonly, metrics, signature, consistency, client_id, creds)

	rv := &httpRequest{
		BaseRequest:   *base,
		resp:          resp,
		req:           req,
		requestNotify: make(chan bool, 1),
	}

	rv.SetTimeout(rv, timeout)

	rv.writer = NewBufferedWriter(rv, bp)

	// Abort if client closes connection; alternatively, return when request completes.
	closeNotify := resp.(http.CloseNotifier).CloseNotify()
	closeNotifier := func() {
		select {
		case <-closeNotify:
			rv.Expire()
			return
		case <-rv.requestNotify:
			return
		}
	}
	go closeNotifier()

	if err != nil {
		rv.Fail(err)
	}

	return rv
}