Microgateway loading plugin multiple times

Google Cloud Apigee
1

My Micro Gateway seems to be calling my plugin multiple times on startup and when requests come through. I added a console.log to the beginning of one of the sample plugins in the Apigee tutorials and its printing 8 times:

‘use strict’;

var debug = require(‘debug’)(‘plugin:response-override’);

console.log(“Before”);

module.exports.init = function(config, logger, stats) {

console.log(“after”);

return {

ondata_response: function(req, res, data, next) {

debug(‘***** plugin ondata_response’);

next(null, null);

},

onend_response: function(req, res, data, next) {

debug(‘***** plugin onend_response’);

next(null, “#Overwriting Response\n\n”);

}

};

}

This is what it prints when the gateway starts

Before

after

Before

after

Before

after

Before

after

Before

after

Before

after

Before

after

Before

after

2

Microgateway runs is a cluster mode. By default there is a worker process for each CPU. Each worker process loads/instantiates the plugins. So yes plugins are loaded multiple times.

3

Is there a way to have a leader worker node so parts of a plugin wouldn’t be run by each worker? My plugin is querying a service discovery app and loading a variable to be used by requests, but when the code runs its running on all workers, and i end up with the same query results 8 times in my variable. Ideally this query would only be run by 1 node, but requests could hit any.

4

Actually i think my question above is invalid. The way i was logging things it looked like my variable had 8 copies of the data, but i think it was each worker logging its single copy of the data sequentially.

Thank you for clarifying!