fix(utils): harden routing info against bad input

src/utils.mjs

@@ -271,14 +271,15 @@ export function getForwardedHost(fhh) {
 export function extractAdobeRoutingInfo(value) {
   // value is a string with key value pairs, separated by a comma
   // extract program, environment and tier
-  const pairs = value.split(',');
-  const routingInfo = {};
-  pairs.forEach((pair) => {
-    const keyValue = pair.trim().split('=');
-    const key = keyValue[0].trim();
-    const val = keyValue[1].trim();
-    routingInfo[key] = val;
-  });
+  const routingInfo = value
+    .split(',')
+    .map((pair) => pair.trim())
+    .filter((pair) => pair.includes('='))
+    .map((pair) => pair.split('='))
+    .reduce((acc, [key, val]) => {
+      acc[key] = val;
+      return acc;
+    }, {});
   return `${routingInfo.tier}-p${routingInfo.program}-e${routingInfo.environment}.adobeaemcloud.net`;
 }
 

test/utils.test.mjs

@@ -128,6 +128,7 @@ describe('Test Utils', () => {
 
   it('Extract Adobe Routing Info', () => {
     assert.equal('publish-p12345-e1234.adobeaemcloud.net', extractAdobeRoutingInfo('environment=1234,program=12345,tier=publish,foo=baz'));
+    assert.equal('undefined-pundefined-eundefined.adobeaemcloud.net', extractAdobeRoutingInfo('nope'));
   });
 
   it('Get Subsystem', () => {