示例#1
0
文件: json.go 项目: pkdevboxy/query
func Run(mockServer *server.Server, q string) ([]interface{}, []errors.Error, errors.Error) {
	var metrics value.Tristate
	scanConfiguration := &scanConfigImpl{}

	base := server.NewBaseRequest(q, nil, nil, nil, "json", 0, value.FALSE, metrics, value.TRUE, scanConfiguration, "", nil)

	mr := &MockResponse{
		results: []interface{}{}, warnings: []errors.Error{}, done: make(chan bool),
	}

	query := &MockQuery{
		BaseRequest: *base,
		response:    mr,
	}

	select {
	case mockServer.Channel() <- query:
		// Wait until the request exits.
		<-query.CloseNotify()
	default:
		// Timeout.
		return nil, nil, errors.NewError(nil, "Query timed out")
	}

	// wait till all the results are ready
	<-mr.done
	return mr.results, mr.warnings, mr.err
}
示例#2
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
}