Add debug mode

Dockerfile

@@ -32,3 +32,5 @@ RUN [ -e success ] && gradle :examples:build buildDocs && touch success-examples
 FROM builder AS test-builder
 
 RUN [ -e success ] && [ -e success-publish ] && [ -e success-examples-docs ]
+
+VOLUME [ "/src/core" ]

Makefile

@@ -10,6 +10,7 @@ build:
 
 	docker build $(GIT_HEAD_ARG) --target=runner --tag=camptocamp/mapfish_print core
 	docker build $(GIT_HEAD_ARG) --target=tester --tag=mapfish_print_tester core
+	docker build $(GIT_HEAD_ARG) --target=watcher --tag=mapfish_print_watcher core
 
 .PHONY: acceptance-tests-up
 acceptance-tests-up:

README.md

@@ -40,6 +40,13 @@ The test (part of the build) requires the 'Liberation Sans' font, which can be d
 
 </div>
 
+# Auto-releoad mode
+
+To be able to quickly test modifications in the print you should:
+- Copy the file `docker-compose.override.sample.yaml` to `docker-compose.override.yaml`.
+- Run `docker compose up -d`,
+The print will be available on port `8080` and on code modification will be built and trigger a restart.
+
 # Create new stabilisation branch
 
 - Create a new branch name x.y from master.

core/Dockerfile

@@ -58,4 +58,12 @@ FROM runner AS tester
 COPY jettyRunExtraFiles/mapfish-spring-application-context-override-acceptencetests.xml \
   webapps/ROOT/WEB-INF/classes/mapfish-spring-application-context-override.xml
 
+FROM runner AS watcher
+
+RUN apt update && \
+    apt install --yes python3-pip rsync && \
+    apt-get clean && \
+    rm --recursive --force /var/lib/apt/lists/*
+RUN python3 -m pip --disable-pip-version-check --no-cache-dir install inotify
+
 FROM runner AS final

core/docker/usr/local/tomcat/bin/docker-start-watch

@@ -0,0 +1,55 @@
+#!/usr/bin/env python3
+
+import subprocess
+from threading import Lock, Timer
+
+import inotify.adapters
+
+started = True
+timer = None
+
+
+def start():
+    global started, timer
+    subprocess.check_call(
+        [
+            "rsync",
+            "--delete",
+            "--recursive",
+            "/src/core/build/classes/java/main/org/mapfish/print/",
+            "/usr/local/tomcat/webapps/ROOT/WEB-INF/classes/org/mapfish/print/",
+        ]
+    )
+    subprocess.check_call(["catalina.sh", "start"])
+    started = True
+    timer = None
+    print("PYTHON: &&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&& 555")
+
+
+def main():
+    global started, timer
+    subprocess.check_call(["catalina.sh", "start"])
+
+    inotify_tree = inotify.adapters.InotifyTree("/src/core/build")
+
+    lock = Lock()
+    for _, type_names, path, filename in inotify_tree.event_gen(yield_nones=False):
+        if "IN_CLOSE_WRITE" in type_names:
+            with lock:
+
+                if timer is not None:
+                    print("cancel")
+                    timer.cancel()
+                    timer = None
+
+                if started:
+                    subprocess.check_call(["catalina.sh", "stop"])
+                    started = False
+
+                timer = Timer(1, start)
+                timer.start()
+                print("start")
+
+
+if __name__ == "__main__":
+    main()

docker-compose.override.sample.yaml

@@ -0,0 +1,19 @@
+---
+version: '2.1'
+
+services:
+  builder:
+    image: mapfish_print_builder
+    volumes:
+      - ./core:/src/core
+    command:
+      - gradle
+      - --continuous
+      - :core:classes
+
+  print:
+    image: mapfish_print_watcher
+    command:
+      - /usr/local/tomcat/bin/docker-start-watch
+    volumes_from:
+      - builder

docker-compose.yaml

@@ -17,6 +17,7 @@ services:
       PRINT_YAML_MAX_ALIASES: 200
       LOG_LEVEL: DEBUG
       JASPER_LOG_LEVEL: DEBUG
+      CATALINA_OUT: /dev/stdout
 
   tests:
     image: mapfish_print_builder