refactor(backend): rename OpenFlare directory to lowercase openflare

backend/openflare/plugins/agent/nginx/observability_assets.go

@@ -0,0 +1,67 @@
+// Copyright 2026 Arctel.net
+// SPDX-License-Identifier: Apache-2.0
+
+package nginx
+
+import "Wavelet/openflare/plugins/agent/protocol"
+
+// Local OpenResty observability endpoint (target model):
+// GET /openflare/observability returns instantaneous health/connections only.
+// Business traffic is collected exclusively from access.log.
+
+const openRestyObservabilityInitLua = `return
+`
+
+// log.lua no longer accumulates business counters (access.log is the authority).
+const openRestyObservabilityLogLua = `return
+`
+
+// read.lua exposes stub_status-style connection gauges as JSON.
+const openRestyObservabilityReadLua = `local cjson = require "cjson.safe"
+
+local function read_stub_status()
+    local res = ngx.location.capture("/openflare/stub_status")
+    if not res or res.status ~= 200 or not res.body then
+        return nil
+    end
+    local body = res.body
+    local active = tonumber(string.match(body, "Active connections:%s*(%d+)")) or 0
+    local reading = tonumber(string.match(body, "Reading:%s*(%d+)")) or 0
+    local writing = tonumber(string.match(body, "Writing:%s*(%d+)")) or 0
+    local waiting = tonumber(string.match(body, "Waiting:%s*(%d+)")) or 0
+    return {
+        active = active,
+        reading = reading,
+        writing = writing,
+        waiting = waiting
+    }
+end
+
+local connections = read_stub_status()
+local payload = {
+    ok = connections ~= nil,
+    captured_at_unix = ngx.time(),
+    connections = connections or {
+        active = 0,
+        reading = 0,
+        writing = 0,
+        waiting = 0
+    }
+}
+
+ngx.header.content_type = "application/json"
+ngx.status = ngx.HTTP_OK
+ngx.say(cjson.encode(payload))
+`
+
+// ManagedObservabilityLuaFiles returns embedded Lua assets for OpenResty observability.
+func ManagedObservabilityLuaFiles() []protocol.SupportFile {
+	return []protocol.SupportFile{
+		{Path: "init.lua", Content: openRestyObservabilityInitLua},
+		{Path: "log.lua", Content: openRestyObservabilityLogLua},
+		{Path: "read.lua", Content: openRestyObservabilityReadLua},
+		{Path: "observability/init.lua", Content: openRestyObservabilityInitLua},
+		{Path: "observability/log.lua", Content: openRestyObservabilityLogLua},
+		{Path: "observability/read.lua", Content: openRestyObservabilityReadLua},
+	}
+}