chore: extend version endpoint with build timestamp and chromium version

Refs: #74

Dockerfile

@@ -1,20 +1,23 @@
 FROM python:3.12.5-slim@sha256:59c7332a4a24373861c4a5f0eec2c92b87e3efeb8ddef011744ef9a751b1d11c
 LABEL maintainer="SBB Polarion Team <[email protected]>"
 
-ARG APP_IMAGE_VERSION
+ARG APP_IMAGE_VERSION=0.0.0-dev
 
 RUN apt-get update && \
     apt-get --yes --no-install-recommends install chromium dbus fonts-dejavu fonts-liberation libpango-1.0-0 libpangoft2-1.0-0 python3-brotli python3-cffi vim && \
     apt-get clean autoclean && \
     apt-get --yes autoremove && \
     rm -rf /var/lib/apt/lists/*
 
-ENV WORKING_DIR=/opt/weasyprint
-ENV CHROMIUM_EXECUTABLE_PATH=/usr/bin/chromium
-ENV WEASYPRINT_SERVICE_VERSION=$APP_IMAGE_VERSION
+ENV WORKING_DIR="/opt/weasyprint"
+ENV CHROMIUM_EXECUTABLE_PATH="/usr/bin/chromium"
+ENV WEASYPRINT_SERVICE_VERSION=${APP_IMAGE_VERSION}
 
 WORKDIR ${WORKING_DIR}
 
+RUN BUILD_TIMESTAMP=$(date -u +"%Y-%m-%dT%H:%M:%SZ") && \
+    echo ${BUILD_TIMESTAMP} > "${WORKING_DIR}/.build_timestamp"
+
 COPY requirements.txt ${WORKING_DIR}/requirements.txt
 
 RUN pip install --no-cache-dir -r ${WORKING_DIR}/requirements.txt

README.md

@@ -48,9 +48,9 @@ To build the Docker image from the source with a custom version, use:
 
 ```bash
   docker build \
-    --build-arg APP_IMAGE_VERSION=0.0.0 \
+    --build-arg APP_IMAGE_VERSION=0.0.0-dev \
     --file Dockerfile \
-    --tag weasyprint-service:0.0.0-test .
+    --tag weasyprint-service:0.0.0-dev .
 ```
 
 Replace 0.0.0 with the desired version number.
@@ -63,7 +63,7 @@ To start the Docker container with your custom-built image:
   docker run --detach \
     --publish 9080:9080 \
     --name weasyprint-service \
-    weasyprint-service:0.0.0-test
+    weasyprint-service:0.0.0-dev
 ```
 
 ### Stopping the Container
@@ -89,9 +89,9 @@ Weasyprint Service provides the following endpoints:
 
 ##### Responses
 
-> | HTTP code | Content-Type       | Response                                  |
-> |-----------|--------------------|-------------------------------------------|
-> | `200`     | `application/json` | `{"python":"3.12.3","weasyprint":"61.2"}` |
+> | HTTP code | Content-Type       | Response                                                                                                                                           |
+> |-----------|--------------------|----------------------------------------------------------------------------------------------------------------------------------------------------|
+> | `200`     | `application/json` | `{ "chromium": "129.0.6668.58", "python": "3.12.5", "timestamp": "2024-09-23T12:23:09Z", "weasyprint": "62.3", "weasyprintService": "0.0.0-dev" }` |
 
 ##### Example cURL
 

app/WeasyprintController.py

@@ -17,7 +17,9 @@ def version():
     return {
         "python": platform.python_version(),
         "weasyprint": weasyprint.__version__,
-        "weasyprintService": os.environ.get('WEASYPRINT_SERVICE_VERSION')
+        "weasyprintService": os.environ.get('WEASYPRINT_SERVICE_VERSION'),
+        "timestamp": os.environ.get('WEASYPRINT_SERVICE_BUILD_TIMESTAMP'),
+        "chromium": os.environ.get('WEASYPRINT_SERVICE_CHROMIUM_VERSION'),
     }
 
 

entrypoint.sh

@@ -1,12 +1,18 @@
 #!/bin/bash
 
+BUILD_TIMESTAMP="$(cat /opt/weasyprint/.build_timestamp)"
+export WEASYPRINT_SERVICE_BUILD_TIMESTAMP=${BUILD_TIMESTAMP}
+CHROMIUM_VERSION="$(${CHROMIUM_EXECUTABLE_PATH} --version | awk '{print $2}')"
+export WEASYPRINT_SERVICE_CHROMIUM_VERSION=${CHROMIUM_VERSION}
+
 if ! pgrep -x 'dbus-daemon' > /dev/null; then
     if [ -f /run/dbus/pid ]; then
         rm /run/dbus/pid
     fi
     dbus_session_bus_address_filename="/tmp/dbus_session_bus_address";
     dbus-daemon --system --fork --print-address > ${dbus_session_bus_address_filename};
-    export DBUS_SESSION_BUS_ADDRESS=$(cat ${dbus_session_bus_address_filename})
+    BUS_ADDRESS=$(cat ${dbus_session_bus_address_filename});
+    export DBUS_SESSION_BUS_ADDRESS=${BUS_ADDRESS};
 fi
 
 python app/WeasyprintServiceApplication.py &