Update

backend/Dockerfile

@@ -60,12 +60,16 @@ COPY --from=public /usr/src/public/dist ./public
 COPY --from=templates-html /usr/src/templates/html ./templates/html
 COPY ./src ./src
 RUN if [ "${BUILD_ENV}" = "development" ]; then \
-  make dev && \
-  ldd bin/backend | tr -s '[:blank:]' '\n' | grep '^/' | \
-  xargs -I % sh -c 'mkdir -p $(dirname deps%); cp % deps%;'; \
+  make dev; \
   else \
   make; \
   fi
+RUN if [ "${BUILD_ENV}" = "development" ]; then \
+  ldd bin/api | tr -s '[:blank:]' '\n' | grep '^/' | \
+  xargs -I % sh -c 'mkdir -p $(dirname deps%); cp % deps%;'; \
+  ldd bin/worker | tr -s '[:blank:]' '\n' | grep '^/' | \
+  xargs -I % sh -c 'mkdir -p $(dirname deps%); cp % deps%;'; \
+  fi
 
 FROM busybox as runner
 LABEL maintainer="Dominic Grimm <dominic@dergrimm.net>" \
@@ -77,6 +81,5 @@ WORKDIR /usr/src/mentorenwahl
 COPY --from=micrate-builder /usr/src/micrate/bin/micrate ./bin/micrate
 COPY --from=builder /usr/src/mentorenwahl/db ./db
 COPY --from=builder /usr/src/mentorenwahl/deps /
-COPY --from=builder /usr/src/mentorenwahl/bin/backend ./bin/backend
+COPY --from=builder /usr/src/mentorenwahl/bin ./bin
 EXPOSE 80
-CMD [ "./bin/backend", "run" ]

backend/shard.yml

@@ -23,8 +23,10 @@ authors:
 license: GPL-3.0
 
 targets:
-  backend:
-    main: src/backend.cr
+  api:
+    main: src/bin/api.cr
+  worker:
+    main: src/bin/worker.cr
 
 crystal: 1.7.2
 

backend/src/backend.cr

@@ -23,6 +23,4 @@ require "./backend/*"
 module Backend
   Docker.setup
   Db.init
-
-  Commander.run(CLI, ARGV)
 end

backend/src/backend/cli.cr

@@ -3,10 +3,10 @@ require "tallboy"
 require "wannabe_bool"
 require "fancyline"
 
-module Backend
-  CLI = Commander::Command.new do |cmd|
-    cmd.use = "backend"
-    cmd.short = "Mentorenwahl backend CLI"
+module Backend::Cli
+  API = Commander::Command.new do |cmd|
+    cmd.use = "api"
+    cmd.short = "Mentorenwahl backend API CLI"
 
     cmd.run do
       puts cmd.help
@@ -287,4 +287,23 @@ module Backend
       end
     end
   end
+
+  WORKER = Commander::Command.new do |cmd|
+    cmd.use = "worker"
+    cmd.short = "Mentorenwahl backend worker CLI"
+
+    cmd.run do
+      puts cmd.help
+    end
+
+    cmd.commands.add do |c|
+      c.use = "run"
+      c.short = "Start the worker"
+      c.long = c.short
+
+      c.run do
+        Mosquito::Runner.start
+      end
+    end
+  end
 end

backend/src/backend/runner.cr

@@ -29,7 +29,7 @@ module Backend
       [
         Service::SynchronousStarter.new([
           Web::Service.new.as(Service),
-          Worker::Service.new.as(Service),
+          # Worker::Service.new.as(Service),
         ] of Service).as(Service::Starter),
       ]
     end

backend/src/bin/api.cr

@@ -0,0 +1,3 @@
+require "../backend"
+
+Commander.run(Backend::Cli::API, ARGV)

backend/src/bin/worker.cr

@@ -0,0 +1,3 @@
+require "../backend"
+
+Commander.run(Backend::Cli::WORKER, ARGV)

config/nginx/nginx.conf

@@ -30,7 +30,7 @@ http {
     }
 
     location /graphql {
-      proxy_pass http://backend/;
+      proxy_pass http://api/;
     }
   }
 

docker-compose.yml

@@ -14,6 +14,33 @@
 # You should have received a copy of the GNU General Public License
 # along with this program.  If not, see <https://www.gnu.org/licenses/>.
 
+x-backend:
+  &backend
+  image: git.dergrimm.net/mentorenwahl/backend:latest
+  build:
+    context: ./backend
+    args:
+      BUILD_ENV: production
+  restart: always
+  depends_on:
+    - db
+    - redis
+    - auth
+  environment:
+    BACKEND_MINIMUM_TEACHER_SELECTION_COUNT: ${BACKEND_MINIMUM_TEACHER_SELECTION_COUNT}
+    BACKEND_ASSIGNMENT_RUN_TIME: ${BACKEND_ASSIGNMENT_RUN_TIME}
+    BACKEND_API_JWT_SECRET: ${BACKEND_API_JWT_SECRET}
+    BACKEND_API_JWT_EXPIRATION: ${BACKEND_API_JWT_EXPIRATION}
+    BACKEND_DB_URL: postgres://${POSTGRES_USER}:${POSTGRES_PASSWORD}@db:5432/${POSTGRES_USER}
+    BACKEND_DB_ALLOW_OLD_SCHEMA: ${BACKEND_DB_ALLOW_OLD_SCHEMA}
+    BACKEND_REDIS_HOST: redis
+    BACKEND_REDIS_PORT: 6379
+    BACKEND_AUTH_URL: "http://auth/v1"
+  volumes:
+    - /etc/timezone:/etc/timezone:ro
+    - /etc/localtime:/etc/localtime:ro
+    - ./data/static:/static
+
 version: "3"
 
 services:
@@ -27,7 +54,7 @@ services:
       - 8080:8080
     depends_on:
       - adminer
-      - backend
+      - api
       - frontend
 
   db:
@@ -66,31 +93,20 @@ services:
     volumes:
       - ./data/static:/static
 
-  backend:
-    image: git.dergrimm.net/mentorenwahl/backend:latest
-    build:
-      context: ./backend
-      args:
-        BUILD_ENV: production
-    restart: always
+  worker:
+    <<: *backend
+    command: ./bin/worker run
+    deploy:
+      replicas: 2
+
+  api:
+    <<: *backend
+    command: ./bin/api run
     depends_on:
       - db
       - redis
       - auth
-    environment:
-      BACKEND_MINIMUM_TEACHER_SELECTION_COUNT: ${BACKEND_MINIMUM_TEACHER_SELECTION_COUNT}
-      BACKEND_ASSIGNMENT_RUN_TIME: ${BACKEND_ASSIGNMENT_RUN_TIME}
-      BACKEND_API_JWT_SECRET: ${BACKEND_API_JWT_SECRET}
-      BACKEND_API_JWT_EXPIRATION: ${BACKEND_API_JWT_EXPIRATION}
-      BACKEND_DB_URL: postgres://${POSTGRES_USER}:${POSTGRES_PASSWORD}@db:5432/${POSTGRES_USER}
-      BACKEND_DB_ALLOW_OLD_SCHEMA: ${BACKEND_DB_ALLOW_OLD_SCHEMA}
-      BACKEND_REDIS_HOST: redis
-      BACKEND_REDIS_PORT: 6379
-      BACKEND_AUTH_URL: "http://auth/v1"
-    volumes:
-      - /etc/timezone:/etc/timezone:ro
-      - /etc/localtime:/etc/localtime:ro
-      - ./data/static:/static
+      - worker
 
   frontend:
     image: git.dergrimm.net/mentorenwahl/frontend:latest
@@ -98,7 +114,7 @@ services:
       context: ./frontend
     restart: always
     depends_on:
-      - backend
+      - api
 
 volumes:
   db: