Initial commit: mod_reqin_log Apache module

Features:
- JSON logging of HTTP requests to Unix domain socket
- Configurable HTTP headers logging (flat JSON structure)
- Header value truncation and count limits
- Automatic reconnect on socket disconnection
- Error reporting with throttling

Configuration directives:
- JsonSockLogEnabled: Enable/disable logging
- JsonSockLogSocket: Unix socket path
- JsonSockLogHeaders: List of headers to log
- JsonSockLogMaxHeaders: Maximum headers to log
- JsonSockLogMaxHeaderValueLen: Max header value length
- JsonSockLogReconnectInterval: Reconnect delay
- JsonSockLogErrorReportInterval: Error log throttle

Includes:
- Module source code (src/)
- Unit and integration tests (tests/, scripts/)
- Documentation (README.md, architecture.yml)
- Build configuration (CMakeLists.txt, Makefile)
- Packaging (deb/rpm)

Co-authored-by: Qwen-Coder <qwen-coder@alibabacloud.com>

packaging/deb/compat

@@ -0,0 +1 @@
+10

packaging/deb/control

@@ -0,0 +1,27 @@
+Source: mod-reqin-log
+Section: web
+Priority: optional
+Maintainer: Developer <dev@example.com>
+Build-Depends: debhelper (>= 10),
+               apache2-dev,
+               apache2,
+               build-essential,
+               pkg-config
+Standards-Version: 4.5.0
+Homepage: https://github.com/example/mod_reqin_log
+
+Package: libapache2-mod-reqin-log
+Architecture: any
+Depends: apache2, ${shlibs:Depends}, ${misc:Depends}
+Description: Apache HTTPD module for logging HTTP requests as JSON to Unix socket
+ mod_reqin_log is an Apache HTTPD 2.4 module that logs all incoming HTTP requests
+ as JSON lines to a Unix domain socket. The logging occurs at request reception
+ time (post_read_request phase), capturing input-side data without waiting for
+ application processing.
+ .
+ Features:
+ - Non-blocking I/O to avoid stalling worker processes
+ - Configurable header logging with truncation support
+ - Automatic reconnection to Unix socket on failure
+ - Throttled error reporting to Apache error_log
+ - Compatible with prefork, worker, and event MPMs

packaging/deb/install

@@ -0,0 +1,2 @@
+usr/lib/apache2/modules/mod_reqin_log.so
+etc/apache2/conf-available/mod_reqin_log.conf

packaging/deb/rules

@@ -0,0 +1,24 @@
+#!/usr/bin/make -f
+
+%:
+	dh $@
+
+override_dh_auto_build:
+	$(MAKE) APXS=/usr/bin/apxs
+
+override_dh_auto_install:
+	$(MAKE) install DESTDIR=$(CURDIR)/debian/libapache2-mod-reqin-log APXS=/usr/bin/apxs
+	install -d $(CURDIR)/debian/libapache2-mod-reqin-log/etc/apache2/conf-available/
+	install -m 644 conf/mod_reqin_log.conf $(CURDIR)/debian/libapache2-mod-reqin-log/etc/apache2/conf-available/mod_reqin_log.conf
+
+override_dh_auto_clean:
+	$(MAKE) clean || true
+	dh_auto_clean
+
+override_dh_strip_nondeterminism:
+	# Nothing to strip
+
+override_dh_install:
+	dh_install
+	install -d $(CURDIR)/debian/libapache2-mod-reqin-log/usr/lib/apache2/modules/
+	install -m 755 .libs/mod_reqin_log.so $(CURDIR)/debian/libapache2-mod-reqin-log/usr/lib/apache2/modules/