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Invocation.ts
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Invocation.ts
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import InvocationData from './data/invocation/InvocationData';
import Utils from './utils/Utils';
import TimeoutError from './error/TimeoutError';
import InvocationConfig from './config/InvocationConfig';
import {LAMBDA_FUNCTION_PLATFORM} from '../Constants';
import MonitoringDataType from './data/base/MonitoringDataType';
import PluginContext from './PluginContext';
import InvocationSupport from './support/InvocationSupport';
import InvocationTraceSupport from './support/InvocationTraceSupport';
class Invocation {
hooks: { 'before-invocation': (data: any) => void; 'after-invocation': (data: any) => void; };
options: InvocationConfig;
invocationData: InvocationData;
reporter: any;
pluginContext: PluginContext;
apiKey: any;
finishTimestamp: any;
startTimestamp: number;
pluginOrder: number = 2;
constructor(options: any) {
this.hooks = {
'before-invocation': this.beforeInvocation,
'after-invocation': this.afterInvocation,
};
this.options = options;
}
report(data: any): void {
this.reporter.addReport(data);
}
setPluginContext = (pluginContext: PluginContext) => {
this.pluginContext = pluginContext;
this.apiKey = pluginContext.apiKey;
}
beforeInvocation = (data: any) => {
const { originalContext, reporter } = data;
this.reporter = reporter;
this.finishTimestamp = null;
this.startTimestamp = this.pluginContext.invocationStartTimestamp;
InvocationSupport.clearError();
this.invocationData = Utils.initMonitoringData(this.pluginContext,
MonitoringDataType.INVOCATION) as InvocationData;
this.invocationData.applicationPlatform = LAMBDA_FUNCTION_PLATFORM;
this.invocationData.functionRegion = this.pluginContext.applicationRegion;
this.invocationData.tags = {};
this.invocationData.userTags = {};
this.invocationData.startTimestamp = this.startTimestamp;
this.invocationData.finishTimestamp = 0;
this.invocationData.duration = 0;
this.invocationData.erroneous = false;
this.invocationData.errorType = '';
this.invocationData.errorMessage = '';
this.invocationData.coldStart = this.pluginContext.requestCount === 0;
this.invocationData.timeout = false;
this.invocationData.transactionId = this.pluginContext.transactionId ?
this.pluginContext.transactionId : originalContext.awsRequestId;
this.invocationData.spanId = this.pluginContext.spanId;
this.invocationData.traceId = this.pluginContext.traceId;
this.invocationData.tags['aws.lambda.memory_limit'] = this.pluginContext.maxMemory;
this.invocationData.tags['aws.lambda.arn'] = originalContext.invokedFunctionArn;
this.invocationData.tags['aws.account_no'] = Utils.getAWSAccountNo(originalContext.invokedFunctionArn);
this.invocationData.tags['aws.lambda.invocation.coldstart'] = this.pluginContext.requestCount === 0;
this.invocationData.tags['aws.region'] = this.pluginContext.applicationRegion;
this.invocationData.tags['aws.lambda.log_group_name'] = originalContext ? originalContext.logGroupName : '';
this.invocationData.tags['aws.lambda.invocation.timeout'] = false;
this.invocationData.tags['aws.lambda.name'] = originalContext ? originalContext.functionName : '';
this.invocationData.tags['aws.lambda.log_stream_name'] = originalContext.logStreamName;
this.invocationData.tags['aws.lambda.invocation.request_id'] = originalContext.awsRequestId;
const { heapUsed } = process.memoryUsage();
this.invocationData.tags['aws.lambda.invocation.memory_usage'] = Math.floor(heapUsed / (1024 * 1024));
}
afterInvocation = (data: any) => {
if (InvocationSupport.hasError()) {
this.invocationData.setError(InvocationSupport.error);
}
if (data.error) {
const error = Utils.parseError(data.error);
this.invocationData.setError(error);
if (data.error instanceof TimeoutError) {
this.invocationData.timeout = true;
this.invocationData.tags['aws.lambda.invocation.timeout'] = true;
}
this.invocationData.tags.error = true;
this.invocationData.tags['error.message'] = error.errorMessage;
this.invocationData.tags['error.kind'] = error.errorType;
this.invocationData.tags['error.stack'] = error.stack;
if (error.code) {
this.invocationData.tags['error.code'] = error.code;
}
if (error.stack) {
this.invocationData.tags['error.stack'] = error.stack;
}
}
this.invocationData.setTags(InvocationSupport.tags);
this.invocationData.setUserTags(InvocationSupport.userTags);
this.finishTimestamp = this.pluginContext.invocationFinishTimestamp;
this.invocationData.finishTimestamp = this.finishTimestamp;
this.invocationData.duration = this.finishTimestamp - this.startTimestamp;
this.invocationData.resources = InvocationTraceSupport.getResources(this.pluginContext.spanId);
this.invocationData.incomingTraceLinks = InvocationTraceSupport.getIncomingTraceLinks();
this.invocationData.outgoingTraceLinks = InvocationTraceSupport.getOutgoingTraceLinks();
const reportData = Utils.generateReport(this.invocationData, this.apiKey);
this.report(reportData);
this.destroy();
}
destroy(): void {
InvocationSupport.removeTags();
InvocationSupport.removeAgentTags();
InvocationTraceSupport.clear();
}
}
export default function instantiateInvocationPlugin(config: InvocationConfig) {
return new Invocation(config);
}