fix to fulfil requests for ec.js from a server-side GTM endpoint (Custom Client Template)

fix-ecjs-client.tpl

___INFO___

{
  "type": "CLIENT",
  "id": "cvt_temp_public_id",
  "version": 1,
  "securityGroups": [],
  "displayName": "Fix ec.js",
  "brand": {
    "id": "brand_dummy",
    "displayName": ""
  },
  "description": "send (cached) ec.js via SSGTM",
  "containerContexts": [
    "SERVER"
  ]
}


___TEMPLATE_PARAMETERS___

[]


___SANDBOXED_JS_FOR_SERVER___

const setResponseBody = require('setResponseBody');
const setResponseHeader = require('setResponseHeader');
const setResponseStatus = require('setResponseStatus');
const sendHttpGet = require('sendHttpGet');
const templateDataStorage = require('templateDataStorage');
const returnResponse = require('returnResponse');
const key = "ec.js";

if (require('getRequestPath')() === '/plugins/ua/ec.js') {
  require('claimRequest')();
  setResponseHeader('content-type', 'application/javascript');
  const cachedBody = templateDataStorage.getItemCopy(key);
  if (cachedBody) {
    setResponseBody(cachedBody);
    setResponseStatus(200);
    returnResponse();
  } else {
    sendHttpGet('https://www.google-analytics.com/plugins/ua/ec.js', (statusCode, headers, body) => {
      templateDataStorage.setItemCopy(key, body);
      setResponseBody(body);
      setResponseStatus(statusCode);
      returnResponse();
    });    
  }  
}


___SERVER_PERMISSIONS___

[
  {
    "instance": {
      "key": {
        "publicId": "read_request",
        "versionId": "1"
      },
      "param": [
        {
          "key": "pathAllowed",
          "value": {
            "type": 8,
            "boolean": true
          }
        },
        {
          "key": "requestAccess",
          "value": {
            "type": 1,
            "string": "specific"
          }
        },
        {
          "key": "headerAccess",
          "value": {
            "type": 1,
            "string": "any"
          }
        },
        {
          "key": "queryParameterAccess",
          "value": {
            "type": 1,
            "string": "any"
          }
        }
      ]
    },
    "clientAnnotations": {
      "isEditedByUser": true
    },
    "isRequired": true
  },
  {
    "instance": {
      "key": {
        "publicId": "return_response",
        "versionId": "1"
      },
      "param": []
    },
    "isRequired": true
  },
  {
    "instance": {
      "key": {
        "publicId": "access_template_storage",
        "versionId": "1"
      },
      "param": []
    },
    "isRequired": true
  },
  {
    "instance": {
      "key": {
        "publicId": "access_response",
        "versionId": "1"
      },
      "param": [
        {
          "key": "writeResponseAccess",
          "value": {
            "type": 1,
            "string": "any"
          }
        },
        {
          "key": "writeHeaderAccess",
          "value": {
            "type": 1,
            "string": "specific"
          }
        }
      ]
    },
    "clientAnnotations": {
      "isEditedByUser": true
    },
    "isRequired": true
  },
  {
    "instance": {
      "key": {
        "publicId": "send_http",
        "versionId": "1"
      },
      "param": [
        {
          "key": "allowedUrls",
          "value": {
            "type": 1,
            "string": "specific"
          }
        },
        {
          "key": "urls",
          "value": {
            "type": 2,
            "listItem": [
              {
                "type": 1,
                "string": "https://www.google-analytics.com/plugins/ua/ec.js"
              }
            ]
          }
        }
      ]
    },
    "clientAnnotations": {
      "isEditedByUser": true
    },
    "isRequired": true
  }
]


___TESTS___

scenarios: []


___NOTES___

Created on 14.10.2021, 00:03:14