aws-lambda-batch-invoker
v1.1.0
Published
batch invoker of a lambda function
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aws-lambda-batch-invoker
Module that allows batch invoking a lambda function synchronously via the RequestResponse
invocationType or asynchronously via the Event
invocationType.
Usage
new BatchInvoker(options)
Constructor for the class.
- options - { Object, optional } - an object to provide configuration options.
- client - { Object, optional } - a valid lambda client. If no client is provided, the default lambda client will be used.
- logger - { Object/Function, optional } - a valid logger. If no logger is provided, no debug information or errors will be logged.
- compressPayloads - { boolean, optional } - whether the payloads should be compressed to remove whitespace when being stringified. Defaults to false.
- maxConcurrency - { Number } - controls the max number of invocations started at the same time. Defaults to 5.
const Invoker = require('aws-lambda-batch-invoker');
const logger = require('./path/to/your/logger');
// no logger
const invoker = new Invoker();
// logger as option
const invoker2 = new Invoker({ logger });
// override class defaults with options
const invoker2 = new Invoker({ maxConcurrency: 10 });
invoke(options, cb)
Method to synchronously invoke a lambda function via RequestResponse
invocationType.
- options - { Object, required } - lambda invoke options
- functionName - { String, required } - the lambda function you wish to invoke.
- payloads - { Object[], required } - the payloads you wish to send to the lambda function. If only one is provided, will convert to an array.
- clientContext - { Object, base64-encoded } - used to pass client-specific information to the lambda function being invoked via the context variable.
- options - { Object } - configuration options for batch invoke, overrides class set defaults.
- compressPayloads - { boolean, optional } - whether the payloads should be compressed to remove whitespace when being stringified. Defaults to false.
- maxConcurrency - { Number } - controls the max number of invocations started at the same time. Defaults to 5.
- cb - { function } - takes params err and result and is called on success or failure of batch invoking the lambda function. By default returns a promise that rejects on error or resolves with the result from batch invoking the lambda.
const Invoker = require('aws-lambda-batch-invoker');
const invoker = new Invoker();
// lambda handler
module.exports.handler = function(event, context, cb) {
const invokeOptions = {
functionName: 'testFunctionName',
payloads: [
{ data: 'foo' },
{ data: 'bar' },
{ data: 'baz' }
],
clientContext: { requestId: context.awsRequestId }
};
invoker.invoke(invokeOptions, cb);
};
invokeAsync(options, cb)
Method to synchronously invoke a lambda function via Event
invocationType.
- options - { Object, required } - lambda invoke options
- functionName - { String, required } - the lambda function you wish to invoke.
- payloads - { Object[], required } - the payloads you wish to send to the lambda function. If only one is provided, will convert to an array.
- clientContext - { Object, base64-encoded } - used to pass client-specific information to the lambda function being invoked via the context variable.
- options - { Object } - configuration options for batch invoke, overrides class set defaults.
- maxConcurrency - { Number } - controls the max number of invocations started at the same time. Defaults to 5.
- cb - { function } - takes params err and result and is called on success or failure of batch invoking the lambda function. By default returns a promise that rejects on error or resolves with the result from batch invoking the lambda.
const Invoker = require('aws-lambda-batch-invoker');
const invoker = new Invoker();
// lambda handler
module.exports.handler = function(event, context, cb) {
const invokeOptions = {
functionName: 'testFunctionName',
payloads: [
{ data: 'foo' },
{ data: 'bar' },
{ data: 'baz' }
],
clientContext: { requestId: context.awsRequestId }
};
invoker.invokeAsync(invokeOptions, cb);
};