[es] set default port based on protocol (#21564)

* [es] set default port based on protocol

* explicit https/http check

* url parses port as string

* breaking changes docs

* remove 9200 fallback

docs/migration/migrate_7_0.asciidoc

@@ -65,3 +65,10 @@ considered unique based on its persistent UUID, which is written to the path.dat
 *Details:* Any timezone can now be specified by canonical id.
 
 *Impact:* The logging.useUTC flag will have to be replaced with a timezone id.  If set to true the id is `UTC`.
+
+[float]
+=== kibana.yml setting `elasticsearch.url` sets port based on protocol
+*Details:* In prior versions of Kibana, if no port was specified in `elasticsearch.url` a default of 9200 was chosen.
+The port is now protocol dependent: https ports will use 443, and http ports will use 80.
+
+*Impact:* If your `elasticsearch.url` was dependent on an unspecified port set to 9200, `:9200` will have to be appended to the url.

src/core_plugins/elasticsearch/lib/__tests__/parse_config.js

@@ -123,6 +123,29 @@ describe('plugins/elasticsearch', function () {
         const config = parseConfig(serverConfig, { ignoreCertAndKey: true });
         expect(config.ssl.passphrase).to.be(undefined);
       });
+
+      describe('port', () => {
+        it('uses the specified port', () => {
+          const config1 = parseConfig(serverConfig);
+          expect(config1.host.port).to.be('9200');
+
+          serverConfig.url = 'https://localhost:555';
+          const config2 = parseConfig(serverConfig);
+          expect(config2.host.port).to.be('555');
+        });
+
+        it('uses port 80 if http and no specified port', () => {
+          serverConfig.url = 'http://localhost';
+          const config2 = parseConfig(serverConfig);
+          expect(config2.host.port).to.be('80');
+        });
+
+        it ('uses port 443 if https and no specified port', () => {
+          serverConfig.url = 'https://localhost';
+          const config2 = parseConfig(serverConfig);
+          expect(config2.host.port).to.be('443');
+        });
+      });
     });
   });
 });

src/core_plugins/elasticsearch/lib/parse_config.js

@@ -35,9 +35,12 @@ export function parseConfig(serverConfig = {}, { ignoreCertAndKey = false } = {}
   };
 
   const uri = url.parse(serverConfig.url);
+  const httpsURI = uri.protocol === 'https:';
+  const httpURI = uri.protocol === 'http:';
+  const protocolPort = httpsURI && '443' || httpURI && '80';
   config.host = {
     host: uri.hostname,
-    port: uri.port,
+    port: uri.port || protocolPort,
     protocol: uri.protocol,
     path: uri.pathname,
     query: uri.query,