membphis commented on code in PR #12906:
URL: https://github.com/apache/apisix/pull/12906#discussion_r2693728184
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apisix/discovery/eureka/init.lua:
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@@ -145,26 +148,36 @@ local function fetch_full_registry(premature)
return
end
- local request_uri, basic_auth = service_info()
- if not request_uri then
+ local endpoints = build_endpoints()
+ if not endpoints or #endpoints == 0 then
return
end
- local res, err = request(request_uri, basic_auth, "GET", "apps")
- if not res then
- log.error("failed to fetch registry", err)
- return
+ -- try endpoints from random position, failover on error
+ local selected_endpoint
+ local selected_body
+ local num_endpoints = #endpoints
+ local start = math_random(num_endpoints)
+ for i = 0, num_endpoints - 1 do
+ local endpoint = endpoints[(start + i - 1) % num_endpoints + 1]
+ local r, e = request(endpoint.url, endpoint.auth, "GET", "apps")
+ if r and r.body and r.status == 200 then
+ selected_endpoint = endpoint
+ selected_body = r.body
+ break
+ end
+ log.error("failed to fetch registry from ", endpoint.url, ": ",
+ e or (r and ("status=" .. tostring(r.status)) or "unknown"))
end
- if not res.body or res.status ~= 200 then
- log.error("failed to fetch registry, status = ", res.status)
+ if not selected_endpoint then
+ log.error("failed to fetch registry from all eureka hosts")
Review Comment:
need more information, eg: no healthy registry, the count of all hosts
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