feat(cluster): rewrite cluster discovering

* Discovering process adapted from EventStore scala client * Use DNS for first discover but also for reconnoctions (the aim is to be able to reconnect even if all nodes have new IP addresses eg. after rolling update in a cloud environment) * Being able to perform proper unit testing
2020-09-14 17:29:58 +02:00
parent eb56e077f9
commit f79a0444f6
12 changed files with 1146 additions and 20 deletions
--- a/test/fixtures/gossip.json
+++ b/test/fixtures/gossip.json
@ -0,0 +1,98 @@
+{
+  "members": [
+    {
+      "instanceId": "bb16857d-373d-4233-a175-89c917a72329",
+      "timeStamp": "2020-09-02T13:53:24.234898Z",
+      "state": "Slave",
+      "isAlive": false,
+      "internalTcpIp": "10.0.0.1",
+      "internalTcpPort": 1112,
+      "internalSecureTcpPort": 0,
+      "externalTcpIp": "10.0.0.1",
+      "externalTcpPort": 1113,
+      "externalSecureTcpPort": 0,
+      "internalHttpIp": "10.0.0.1",
+      "internalHttpPort": 2112,
+      "externalHttpIp": "10.0.0.1",
+      "externalHttpPort": 2113,
+      "lastCommitPosition": 648923382,
+      "writerCheckpoint": 648936339,
+      "chaserCheckpoint": 648936339,
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+      "epochId": "d8f95f4b-167a-4487-9031-4d31a507e6d9",
+      "nodePriority": 0
+    },
+    {
+      "instanceId": "b3c18dcd-6476-467a-b7b8-d6672b74e9c2",
+      "timeStamp": "2020-09-02T13:56:06.189428Z",
+      "state": "CatchingUp",
+      "isAlive": true,
+      "internalTcpIp": "10.0.0.2",
+      "internalTcpPort": 1112,
+      "internalSecureTcpPort": 0,
+      "externalTcpIp": "10.0.0.2",
+      "externalTcpPort": 1113,
+      "externalSecureTcpPort": 0,
+      "internalHttpIp": "10.0.0.2",
+      "internalHttpPort": 2112,
+      "externalHttpIp": "10.0.0.2",
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+      "chaserCheckpoint": 0,
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+      "epochId": "00000000-0000-0000-0000-000000000000",
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+    {
+      "instanceId": "e802a2b5-826c-4bd5-84d0-c9d1387fbf79",
+      "timeStamp": "2020-09-02T13:56:07.391534Z",
+      "state": "Master",
+      "isAlive": true,
+      "internalTcpIp": "10.0.0.3",
+      "internalTcpPort": 1112,
+      "internalSecureTcpPort": 0,
+      "externalTcpIp": "10.0.0.3",
+      "externalTcpPort": 1113,
+      "externalSecureTcpPort": 0,
+      "internalHttpIp": "10.0.0.3",
+      "internalHttpPort": 2112,
+      "externalHttpIp": "10.0.0.3",
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+      "epochId": "1f17695d-6558-4d8b-ba60-2ae273b11e09",
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+    {
+      "instanceId": "24bb9031-5f21-436c-a7b5-c5f03a95e938",
+      "timeStamp": "2020-09-02T13:54:39.023053Z",
+      "state": "Slave",
+      "isAlive": false,
+      "internalTcpIp": "10.0.0.4",
+      "internalTcpPort": 1112,
+      "internalSecureTcpPort": 0,
+      "externalTcpIp": "10.0.0.4",
+      "externalTcpPort": 1113,
+      "externalSecureTcpPort": 0,
+      "internalHttpIp": "10.0.0.4",
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+      "externalHttpIp": "10.0.0.4",
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+      "epochId": "d8f95f4b-167a-4487-9031-4d31a507e6d9",
+      "nodePriority": 0
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+  ],
+  "serverIp": "10.0.0.3",
+  "serverPort": 2112
+}