ALL: added docker and kubernetes support

.dockerignore

@@ -0,0 +1 @@
+/build

CMakeLists.txt

@@ -36,6 +36,7 @@ include(${SCRIPTS_CMAKE_DIR}/vogl.cmake)
 include(${SCRIPTS_CMAKE_DIR}/debug.cmake)
 include(${SCRIPTS_CMAKE_DIR}/googletest.cmake)
 include(${SCRIPTS_CMAKE_DIR}/manifests.cmake)
+include(${SCRIPTS_CMAKE_DIR}/docker.cmake)
 include(${SCRIPTS_CMAKE_DIR}/lua.cmake)
 include(${SCRIPTS_CMAKE_DIR}/ui.cmake)
 include(${SCRIPTS_CMAKE_DIR}/macros.cmake)
@@ -52,6 +53,7 @@ option(UNITTESTS_SANITIZER_ADDRESS "Builds tests with address sanitizer" OFF)
 option(TOOLS "Builds with tools" ON)
 option(RCON "Builds with rcon tool - also needs TOOLS to be active" ON)
 option(SERVER "Builds with server" ON)
+set(DOCKER_EXECUTABLE "docker" CACHE STRING "The docker cli to use for the docker target")
 set(GDB_EXECUTABLE "gdb" CACHE STRING "The gnu debugger binary to use for the debug target")
 set(LLDB_EXECUTABLE "lldb" CACHE STRING "The lldb binary to use for the debug target")
 set(GIT_EXECUTABLE "git" CACHE STRING "The git binary to use for the update-libs target")
@@ -65,9 +67,12 @@ option(USE_CPPCHECK "Enable cppcheck" OFF)
 option(USE_CLANG_TIDY "Enable Clang Tidy" OFF)
 set(DEBUGGER "gdb" CACHE STRING "Which debugger should be used")
 set_property(CACHE DEBUGGER PROPERTY STRINGS gdb lldb)
-set(SERVER_HOST "localhost" CACHE STRING "Host where the server is running on")
+set(FQDN "example.com" CACHE STRING "The domain to place the services in")
+set(DB_PW "engine" CACHE STRING "The database password")
+set(SERVER_HOST "server-${FQDN}" CACHE STRING "Host where the server is running on")
 set(SERVER_PORT "11337" CACHE STRING "Port where the server is listening on")
 set(BASE_URL "http://localhost/" CACHE STRING "Base url of the http endpoints")
+set(DOCKER_REGISTRY "" CACHE STRING "Docker registry")
 if (${CMAKE_SYSTEM_NAME} STREQUAL "Windows")
 	set(WINDOWS 1)
 elseif (${CMAKE_SYSTEM_NAME} STREQUAL "Android")

cmake/docker.cmake

@@ -0,0 +1,71 @@
+set(DOCKER_BUILD_ARGS "" CACHE STRING "Docker cli arguments for building an image")
+set(DOCKER_RUN_ARGS "" CACHE STRING "Docker cli arguments for running an image")
+set(DOCKER_DELETE_IUMAGE_ARGS "" CACHE STRING "Docker cli arguments for deleting an image")
+set(DOCKER_PUSH_ARGS "" CACHE STRING "Docker cli arguments for pushing an image")
+
+#
+# Adds a docker target to a project if a Dockerfile (copied) or Dockerfile.in (template) is in the directory
+# The working directory is the root dir of the project.
+#
+# The DOCKER_IMAGE_NAME_TAG variable that is set here, must be in sync with the kubernetes manifests
+#
+macro(engine_docker NAME)
+	set(DOCKERFILE_SRC)
+	if (EXISTS ${CMAKE_CURRENT_SOURCE_DIR}/Dockerfile.in)
+		set(DOCKERFILE_SRC ${CMAKE_CURRENT_SOURCE_DIR}/Dockerfile.in)
+		configure_file(${DOCKERFILE_SRC} ${CMAKE_CURRENT_BINARY_DIR}/Dockerfile @ONLY)
+	elseif (EXISTS ${CMAKE_CURRENT_SOURCE_DIR}/Dockerfile)
+		set(DOCKERFILE_SRC ${CMAKE_CURRENT_SOURCE_DIR}/Dockerfile)
+		configure_file(${DOCKERFILE_SRC} ${CMAKE_CURRENT_BINARY_DIR}/Dockerfile COPYONLY)
+	endif()
+	set(DOCKERFILE_TARGET ${CMAKE_CURRENT_BINARY_DIR}/Dockerfile)
+
+	if (DOCKER_REGISTRY)
+		set(DOCKER_IMAGE_NAME_TAG "${DOCKER_REGISTRY}/${NAME}:${ROOT_PROJECT_VERSION}")
+	else()
+		set(DOCKER_IMAGE_NAME_TAG "${NAME}:${ROOT_PROJECT_VERSION}")
+	endif()
+
+	if (DOCKERFILE_SRC AND DOCKER_EXECUTABLE)
+		add_custom_target(${NAME}-docker
+			COMMAND
+				${DOCKER_EXECUTABLE}
+				build
+				--pull
+				${DOCKER_BUILD_ARGS}
+				-t ${DOCKER_IMAGE_NAME_TAG}
+				.
+				-f - < ${DOCKERFILE_TARGET}
+			DEPENDS ${DOCKERFILE_TARGET}
+			SOURCES ${DOCKERFILE_SRC}
+			COMMENT "Docker image name of ${NAME} is ${DOCKER_IMAGE_NAME_TAG}"
+			VERBATIM
+			WORKING_DIRECTORY "${ROOT_DIR}"
+		)
+
+		add_custom_target(${NAME}-docker-run
+			COMMAND
+				${DOCKER_EXECUTABLE}
+				run
+				-it
+				${DOCKER_RUN_ARGS}
+				${DOCKER_IMAGE_NAME_TAG}
+			VERBATIM
+			DEPENDS ${NAME}-docker
+		)
+
+		add_custom_target(${NAME}-docker-push
+			COMMAND
+				${DOCKER_EXECUTABLE}
+				push
+				${DOCKER_PUSH_ARGS}
+				"${DOCKER_IMAGE_NAME_TAG}"
+			COMMAND
+				${DOCKER_EXECUTABLE}
+				rmi
+				${DOCKER_DELETE_IUMAGE_ARGS}
+				"${DOCKER_IMAGE_NAME_TAG}"
+			VERBATIM
+		)
+	endif()
+endmacro()

cmake/manifests.cmake

@@ -10,7 +10,11 @@
 # The DOCKER_IMAGE_NAME_TAG variable that is set here, must be in sync with the docker target
 #
 macro(engine_manifests NAME)
-	set(DOCKER_IMAGE_NAME_TAG "${NAME}:${ROOT_PROJECT_VERSION}")
+	if (DOCKER_REGISTRY)
+		set(DOCKER_IMAGE_NAME_TAG "${DOCKER_REGISTRY}/${NAME}:${ROOT_PROJECT_VERSION}")
+	else()
+		set(DOCKER_IMAGE_NAME_TAG "${NAME}:${ROOT_PROJECT_VERSION}")
+	endif()
 	foreach (FILEPATH ${ARGN})
 		get_filename_component(FILENAME ${FILEPATH} NAME_WE)
 		configure_file(${FILEPATH} ${CMAKE_CURRENT_BINARY_DIR}/deployment/${FILENAME}.yaml)

src/server/CMakeLists.txt

@@ -15,6 +15,14 @@ set(LUA_SRCS
 	map/map001.lua
 )
 set(FILES)
+set(MANIFESTS
+	deployment/deployment.yaml.in
+	deployment/route.yaml.in
+	deployment/service.yaml.in
+	deployment/secrets.yaml.in
+)
 
 engine_add_executable(TARGET ${PROJECT_NAME} SRCS ${SRCS} FILES ${FILES} LUA_SRCS ${LUA_SRCS})
 engine_target_link_libraries(TARGET ${PROJECT_NAME} DEPENDENCIES backend)
+engine_docker(${PROJECT_NAME})
+engine_manifests(${PROJECT_NAME} ${MANIFESTS})

src/server/Dockerfile.in

@@ -0,0 +1,32 @@
+FROM debian:buster as builder
+MAINTAINER Martin Gerhardy <martin.gerhardy@gmail.com>
+
+ENV DEBIAN_FRONTEND noninteractive
+
+RUN apt-get update -q && apt-get install -y cmake g++ pkg-config \
+	libpq-dev opencl-c-headers libcurl4-openssl-dev \
+	libsdl2-dev zlib1g-dev libuv1-dev
+
+COPY contrib /tmp/@ROOT_PROJECT_NAME@/contrib
+COPY tools /tmp/@ROOT_PROJECT_NAME@/tools
+COPY cmake /tmp/@ROOT_PROJECT_NAME@/cmake
+COPY data /tmp/@ROOT_PROJECT_NAME@/data
+COPY src /tmp/@ROOT_PROJECT_NAME@/src
+COPY CMakeLists.txt /tmp/@ROOT_PROJECT_NAME@/
+
+RUN mkdir /tmp/@ROOT_PROJECT_NAME@/build
+RUN cmake -H/tmp/@ROOT_PROJECT_NAME@ -B/tmp/@ROOT_PROJECT_NAME@/build -DUNITTESTS=OFF -DVISUALTESTS=OFF -DTOOLS=OFF -DSERVER=ON -DRCON=OFF -DCMAKE_INSTALL_PREFIX=installation
+RUN make -C /tmp/@ROOT_PROJECT_NAME@/build -j $(nproc) server
+
+FROM debian:buster
+RUN apt-get update -q && \
+	apt-get install -y libatomic1 libcurl4 zlib1g libuv1 libpq5 libsdl2-2.0.0 && \
+	apt-get clean && \
+	rm -rf /var/lib/apt/lists/*
+
+COPY --from=builder /tmp/@ROOT_PROJECT_NAME@/build/@PROJECT_NAME@ /opt/@ROOT_PROJECT_NAME@/
+
+EXPOSE @SERVER_PORT@
+
+WORKDIR /opt/@ROOT_PROJECT_NAME@
+ENTRYPOINT ./@ROOT_PROJECT_NAME@-@PROJECT_NAME@

src/server/deployment/deployment.yaml.in

@@ -0,0 +1,48 @@
+apiVersion: extensions/v1beta1
+kind: Deployment
+metadata:
+  name: @PROJECT_NAME@-deployment
+spec:
+  replicas: 1
+  selector:
+    matchLabels:
+      app: @PROJECT_NAME@
+  template:
+    metadata:
+      labels:
+        app: @PROJECT_NAME@
+    spec:
+      containers:
+      - name: @PROJECT_NAME@
+        image: @DOCKER_IMAGE_NAME_TAG@
+        ports:
+        - name: service-port
+          containerPort: @SERVER_PORT@
+        env:
+        - name: DB_HOST
+          value: postgres-@FQDN@
+        livenessProbe:
+          failureThreshold: 3
+          exec:
+            command:
+            - /opt/@ROOT_PROJECT_NAME@/vengi-@PROJECT_NAME@-healthcheck
+          initialDelaySeconds: 30
+          periodSeconds: 30
+          successThreshold: 1
+          timeoutSeconds: 5
+        readinessProbe:
+          failureThreshold: 3
+          exec:
+            command:
+            - /opt/@ROOT_PROJECT_NAME@/vengi-@PROJECT_NAME@-healthcheck
+          initialDelaySeconds: 30
+          periodSeconds: 30
+          successThreshold: 1
+          timeoutSeconds: 5
+        resources:
+          requests:
+            memory: 256Mi
+            cpu: 1000m
+          limits:
+            memory: 4096Mi
+            cpu: 10000m

src/server/deployment/route.yaml.in

@@ -0,0 +1,14 @@
+apiVersion: v1
+kind: Route
+metadata:
+  name: @PROJECT_NAME@-route
+spec:
+  host: @PROJECT_NAME@-@FQDN@
+  port:
+    targetPort: tcp
+  tls:
+    insecureEdgeTerminationPolicy: Allow
+    termination: edge
+  to:
+    kind: Service
+    name: @PROJECT_NAME@

src/server/deployment/secrets.yaml.in

@@ -0,0 +1,8 @@
+apiVersion: v1
+kind: Secret
+metadata:
+  name: database-credentials
+type: Opaque
+data:
+  DB_PW: >-
+    @DB_PW@

src/server/deployment/service.yaml.in

@@ -0,0 +1,12 @@
+apiVersion: v1
+kind: Service
+metadata:
+  name: @PROJECT_NAME@
+spec:
+  ports:
+  - name: tcp
+    port: @SERVER_PORT@
+    protocol: TCP
+    targetPort: @SERVER_PORT@
+  selector:
+    app: @PROJECT_NAME@