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>

Dockerfile.tests

@@ -0,0 +1,46 @@
+# Dockerfile for running unit tests
+FROM rockylinux:8
+
+# Install build and test dependencies
+RUN dnf install -y epel-release && \
+    dnf install -y \
+    gcc \
+    make \
+    httpd \
+    httpd-devel \
+    apr-devel \
+    apr-util-devel \
+    cmake \
+    python3 \
+    curl \
+    git \
+    && dnf clean all
+
+# Build and install cmocka from source
+RUN cd /tmp && \
+    git clone https://git.cryptomilk.org/projects/cmocka.git && \
+    cd cmocka && \
+    git checkout cmocka-1.1.5 && \
+    mkdir build && cd build && \
+    cmake .. -DCMAKE_INSTALL_PREFIX=/usr && \
+    make && \
+    make install && \
+    cd / && \
+    rm -rf /tmp/cmocka && \
+    dnf remove -y git && \
+    dnf clean all
+
+WORKDIR /build
+
+COPY src/ src/
+COPY tests/ tests/
+COPY CMakeLists.txt CMakeLists.txt
+COPY Makefile Makefile
+
+# Build and run tests
+RUN mkdir -p build/tests && \
+    cd build/tests && \
+    cmake ../../ && \
+    make
+
+CMD ["ctest", "--output-on-failure"]