81 lines
3.4 KiB
JavaScript
81 lines
3.4 KiB
JavaScript
var util = require('util');
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var TcpCommand = require('../systemData/tcpCommand');
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var ClientMessage = require('../messages/clientMessage');
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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 ReadEventOperation(log, cb, stream, eventNumber, resolveLinkTos, requireMaster, userCredentials) {
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OperationBase.call(this, log, cb, TcpCommand.ReadEvent, TcpCommand.ReadEventCompleted, userCredentials);
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this._responseType = ClientMessage.ReadEventCompleted;
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this._stream = stream;
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this._eventNumber = eventNumber;
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this._resolveLinkTos = resolveLinkTos;
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this._requireMaster = requireMaster;
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}
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util.inherits(ReadEventOperation, OperationBase);
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ReadEventOperation.prototype._createRequestDto = function() {
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return new ClientMessage.ReadEvent(this._stream, this._eventNumber, this._resolveLinkTos, this._requireMaster);
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};
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ReadEventOperation.prototype._inspectResponse = function(response) {
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switch (response.result)
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{
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case ClientMessage.ReadEventCompleted.ReadEventResult.Success:
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this._succeed();
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return new InspectionResult(InspectionDecision.EndOperation, "Success");
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case ClientMessage.ReadEventCompleted.ReadEventResult.NotFound:
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this._succeed();
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return new InspectionResult(InspectionDecision.EndOperation, "NotFound");
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case ClientMessage.ReadEventCompleted.ReadEventResult.NoStream:
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this._succeed();
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return new InspectionResult(InspectionDecision.EndOperation, "NoStream");
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case ClientMessage.ReadEventCompleted.ReadEventResult.StreamDeleted:
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this._succeed();
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return new InspectionResult(InspectionDecision.EndOperation, "StreamDeleted");
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case ClientMessage.ReadEventCompleted.ReadEventResult.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.ReadEventCompleted.ReadEventResult.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 ReadEventResult: %s.", response.result));
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}
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};
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ReadEventOperation.prototype._transformResponse = function(response) {
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return new results.EventReadResult(convert(response.result), this._stream, this._eventNumber, response.event);
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};
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function convert(result)
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{
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switch (result)
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{
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case ClientMessage.ReadEventCompleted.ReadEventResult.Success:
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return results.EventReadStatus.Success;
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case ClientMessage.ReadEventCompleted.ReadEventResult.NotFound:
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return results.EventReadStatus.NotFound;
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case ClientMessage.ReadEventCompleted.ReadEventResult.NoStream:
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return results.EventReadStatus.NoStream;
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case ClientMessage.ReadEventCompleted.ReadEventResult.StreamDeleted:
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return results.EventReadStatus.StreamDeleted;
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default:
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throw new Error(util.format("Unexpected ReadEventResult: %s.", result));
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}
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}
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ReadEventOperation.prototype.toString = function() {
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return util.format("Stream: %s, EventNumber: %s, ResolveLinkTo: %s, RequireMaster: %s",
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this._stream, this._eventNumber, this._resolveLinkTos, this._requireMaster);
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};
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module.exports = ReadEventOperation;
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