feat(server): report apisix-standalone endpoint status

[bzp2010]

Description

When syncing to the apisix-standalone backend on the ADC server mode, report endpoint status information additionally.

BREAK CHANGE:

Only for apisix-standalone backend, neither related to apisix nor api7ee

• All apisix-standalone endpoint statuses are now reported via the endpoint_status field instead of the previously used success and failed fields.

• failed will always be an empty array.

• success contains records generated by the diff returns events. However, you should not assume all synchronizations succeeded based on this; the synchronization status is confirmed by the success_count, failed_count, status, and endpoint_status values.

• total_resources will always be 0.

• status, success_count, and failed_count reflect the synchronization status on the endpoint.

{
  "status": "partial_failure",
  "total_resources": 0,
  "success_count": 3,
  "failed_count": 1,
  "success": [
    {
      "event": {
        "resourceType": "consumer",
        "type": "delete",
        "resourceId": "test-consumer1",
        "resourceName": "test-consumer1"
      },
      "synced_at": "2025-12-29T04:42:59.940Z"
    },
    {
      "event": {
        "resourceType": "consumer",
        "type": "create",
        "resourceId": "test-consumer2",
        "resourceName": "test-consumer2"
      },
      "synced_at": "2025-12-29T04:42:59.940Z"
    }
  ],
  "failed": [],
  "endpoint_status": [
    {
      "server": "http://127.0.0.1:49180",
      "success": false,
      "reason": "connect ECONNREFUSED 127.0.0.1:49180",
      "requested_at": "2025-12-29T04:42:59.940Z"
    },
    {
      "server": "http://127.0.0.1:19180",
      "success": true,
      "requested_at": "2025-12-29T04:42:59.000Z",
      "response": {
        "status": 202,
        "headers": {
          "date": "Mon, 29 Dec 2025 04:42:59 GMT",
          "content-type": "application/json",
          "transfer-encoding": "chunked",
          "connection": "keep-alive",
          "server": "APISIX/3.14.1",
          "access-control-allow-origin": "*",
          "access-control-allow-credentials": "true",
          "access-control-expose-headers": "*",
          "access-control-max-age": "3600",
          "x-last-modified": "1766983379",
          "x-digest": "45b9104ccfc3a51fc7444df450e32f8958db1a64"
        },
        "data": ""
      },
      "request": {
        "url": "http://127.0.0.1:19180/apisix/admin/configs",
        "method": "put",
        "headers": {
          "Accept": "application/json, text/plain, */*",
          "Content-Type": "application/json",
          "X-API-KEY": "*****",
          "x-digest": "45b9104ccfc3a51fc7444df450e32f8958db1a64",
          "User-Agent": "axios/1.13.2",
          "Content-Length": "503",
          "Accept-Encoding": "gzip, compress, deflate, br"
        },
        "data": "{\"protos_conf_version\":0,\"consumer_groups_conf_version\":0,\"plugin_configs_conf_version\":0,\"services_conf_version\":0,\"ssls_conf_version\":0,\"routes_conf_version\":0,\"plugins_conf_version\":0,\"consumers\":[{\"modifiedIndex\":1766983379959,\"username\":\"test-consumer2\",\"plugins\":{\"limit-count\":{\"count\":100,\"time_window\":60}}}],\"stream_routes_conf_version\":0,\"secrets_conf_version\":0,\"upstreams_conf_version\":0,\"plugin_metadata_conf_version\":0,\"consumers_conf_version\":1766983379959,\"global_rules_conf_version\":0}"
      }
    },
    {
      "server": "http://127.0.0.1:29180",
      "success": true,
      "requested_at": "2025-12-29T04:42:59.000Z",
      "response": {
        "status": 202,
        "headers": {
          "date": "Mon, 29 Dec 2025 04:42:59 GMT",
          "content-type": "application/json",
          "transfer-encoding": "chunked",
          "connection": "keep-alive",
          "server": "APISIX/3.14.1",
          "access-control-allow-origin": "*",
          "access-control-allow-credentials": "true",
          "access-control-expose-headers": "*",
          "access-control-max-age": "3600",
          "x-last-modified": "1766983379",
          "x-digest": "45b9104ccfc3a51fc7444df450e32f8958db1a64"
        },
        "data": ""
      },
      "request": {
        "url": "http://127.0.0.1:29180/apisix/admin/configs",
        "method": "put",
        "headers": {
          "Accept": "application/json, text/plain, */*",
          "Content-Type": "application/json",
          "X-API-KEY": "*****",
          "x-digest": "45b9104ccfc3a51fc7444df450e32f8958db1a64",
          "User-Agent": "axios/1.13.2",
          "Content-Length": "503",
          "Accept-Encoding": "gzip, compress, deflate, br"
        },
        "data": "{\"protos_conf_version\":0,\"consumer_groups_conf_version\":0,\"plugin_configs_conf_version\":0,\"services_conf_version\":0,\"ssls_conf_version\":0,\"routes_conf_version\":0,\"plugins_conf_version\":0,\"consumers\":[{\"modifiedIndex\":1766983379959,\"username\":\"test-consumer2\",\"plugins\":{\"limit-count\":{\"count\":100,\"time_window\":60}}}],\"stream_routes_conf_version\":0,\"secrets_conf_version\":0,\"upstreams_conf_version\":0,\"plugin_metadata_conf_version\":0,\"consumers_conf_version\":1766983379959,\"global_rules_conf_version\":0}"
      }
    },
    {
      "server": "http://127.0.0.1:39180",
      "success": true,
      "requested_at": "2025-12-29T04:42:59.000Z",
      "response": {
        "status": 202,
        "headers": {
          "date": "Mon, 29 Dec 2025 04:42:59 GMT",
          "content-type": "application/json",
          "transfer-encoding": "chunked",
          "connection": "keep-alive",
          "server": "APISIX/3.14.1",
          "access-control-allow-origin": "*",
          "access-control-allow-credentials": "true",
          "access-control-expose-headers": "*",
          "access-control-max-age": "3600",
          "x-last-modified": "1766983379",
          "x-digest": "45b9104ccfc3a51fc7444df450e32f8958db1a64"
        },
        "data": ""
      },
      "request": {
        "url": "http://127.0.0.1:39180/apisix/admin/configs",
        "method": "put",
        "headers": {
          "Accept": "application/json, text/plain, */*",
          "Content-Type": "application/json",
          "X-API-KEY": "*****",
          "x-digest": "45b9104ccfc3a51fc7444df450e32f8958db1a64",
          "User-Agent": "axios/1.13.2",
          "Content-Length": "503",
          "Accept-Encoding": "gzip, compress, deflate, br"
        },
        "data": "{\"protos_conf_version\":0,\"consumer_groups_conf_version\":0,\"plugin_configs_conf_version\":0,\"services_conf_version\":0,\"ssls_conf_version\":0,\"routes_conf_version\":0,\"plugins_conf_version\":0,\"consumers\":[{\"modifiedIndex\":1766983379959,\"username\":\"test-consumer2\",\"plugins\":{\"limit-count\":{\"count\":100,\"time_window\":60}}}],\"stream_routes_conf_version\":0,\"secrets_conf_version\":0,\"upstreams_conf_version\":0,\"plugin_metadata_conf_version\":0,\"consumers_conf_version\":1766983379959,\"global_rules_conf_version\":0}"
      }
    }
  ]
}

Checklist

• I have explained the need for this PR and the problem it solves
• I have explained the changes or the new features added to this PR
• I have added tests corresponding to this change
• I have updated the documentation to reflect this change
• I have verified that this change is backward compatible