81 lines
3.3 KiB
JavaScript
81 lines
3.3 KiB
JavaScript
var util = require('util');
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var uuid = require('uuid');
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var TcpCommand = require('../systemData/tcpCommand');
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var ClientMessage = require('../messages/clientMessage');
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var ReadDirection = require('../readDirection');
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var StatusCode = require('../systemData/statusCode');
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var InspectionResult = require('./../systemData/inspectionResult');
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var InspectionDecision = require('../systemData/inspectionDecision');
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var results = require('../results');
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var AccessDeniedError = require('../errors/accessDeniedError');
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var OperationBase = require('./operationBase');
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function ReadStreamEventsForwardOperation(
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log, cb, stream, fromEventNumber, maxCount, resolveLinkTos, requireMaster, userCredentials
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) {
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OperationBase.call(this, log, cb, TcpCommand.ReadStreamEventsForward, TcpCommand.ReadStreamEventsForwardCompleted, userCredentials);
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this._responseType = ClientMessage.ReadStreamEventsCompleted;
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this._stream = stream;
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this._fromEventNumber = fromEventNumber;
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this._maxCount = maxCount;
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this._resolveLinkTos = resolveLinkTos;
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this._requireMaster = requireMaster;
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}
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util.inherits(ReadStreamEventsForwardOperation, OperationBase);
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ReadStreamEventsForwardOperation.prototype._createRequestDto = function() {
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return new ClientMessage.ReadStreamEvents({
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eventStreamId: this._stream,
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fromEventNumber: this._fromEventNumber,
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maxCount: this._maxCount,
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resolveLinkTos: this._resolveLinkTos,
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requireMaster: this._requireMaster
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});
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};
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ReadStreamEventsForwardOperation.prototype._inspectResponse = function(response) {
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switch (response.result)
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{
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case ClientMessage.ReadStreamEventsCompleted.ReadStreamResult.Success:
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this._succeed();
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return new InspectionResult(InspectionDecision.EndOperation, "Success");
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case ClientMessage.ReadStreamEventsCompleted.ReadStreamResult.StreamDeleted:
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this._succeed();
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return new InspectionResult(InspectionDecision.EndOperation, "StreamDeleted");
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case ClientMessage.ReadStreamEventsCompleted.ReadStreamResult.NoStream:
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this._succeed();
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return new InspectionResult(InspectionDecision.EndOperation, "NoStream");
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case ClientMessage.ReadStreamEventsCompleted.ReadStreamResult.Error:
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this.fail(new Error("Server error: " + response.error));
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return new InspectionResult(InspectionDecision.EndOperation, "Error");
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case ClientMessage.ReadStreamEventsCompleted.ReadStreamResult.AccessDenied:
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this.fail(new AccessDeniedError("Read", this._stream));
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return new InspectionResult(InspectionDecision.EndOperation, "AccessDenied");
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default:
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throw new Error(util.format("Unexpected ReadStreamResult: %s.", response.result));
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}
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};
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ReadStreamEventsForwardOperation.prototype._transformResponse = function(response) {
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return new results.StreamEventsSlice(
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StatusCode.convert(response.result),
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this._stream,
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this._fromEventNumber,
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ReadDirection.Forward,
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response.events,
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response.nextEventNumber,
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response.lastEventNumber,
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response.isEndOfStream
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)
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};
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ReadStreamEventsForwardOperation.prototype.toString = function() {
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return util.format("Stream: %s, FromEventNumber: %d, MaxCount: %d, ResolveLinkTos: %s, RequireMaster: %s",
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this._stream, this._fromEventNumber, this._maxCount, this._resolveLinkTos, this._requireMaster);
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};
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module.exports = ReadStreamEventsForwardOperation;
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