Added integration test

Dockerfile

@@ -1 +1,9 @@
 FROM alpine:20201218
+
+# Adding bash
+RUN apk --no-cache add \
+    bash=5.1.0-r0 \
+    && \
+    rm -rf /var/cache/apk/*
+
+ENTRYPOINT [ "bash" ]

Makefile

@@ -1,13 +1,38 @@
 .PHONY: build run linters
 
+# Including all other Makefiles
+include $(shell find . -name "Makefile.common")
+
+# Builds the module Docker image
 build:
 	docker-compose build module
 
+# Runs an interactive shell into the module Docker image
 run:
 	docker-compose run module
 
+# Runs linters locally
 linters:
 	docker run \
 		-e RUN_LOCAL=true \
 		-v $(shell pwd -P):/tmp/lint \
 		github/super-linter
+
+# Integration test
+#
+# The module should be able to reach all the other components
+integration-test: build
+
+	# Running the test
+	#
+	# Retrieves `module`'s return code, and terminates
+	# the test as soon as it returns
+	docker-compose \
+		--file tests/integration/docker-compose.yml \
+		up \
+		--exit-code-from module
+
+	# Manually removing containers on fail
+	docker-compose \
+		--file tests/integration/docker-compose.yml \
+		down

README.md

@@ -14,6 +14,12 @@ make build
 make run
 ```
 
+## Run integration tests
+
+```bash
+make integration-test
+```
+
 ## Run linters locally
 
 ```bash

tests/integration/README.md

@@ -0,0 +1,15 @@
+# Integration test
+
+Simple experiment that lets the `module` image try to
+reach out to services directly connected to it,
+e.g.,
+RabbitMQ,
+DGraph,
+and
+the Quartermaster Orchestrator.
+
+## How to run
+
+```bash
+make --directory ../.. integration-test
+```

tests/integration/docker-compose.yml

@@ -0,0 +1,60 @@
+version: '3.3'
+services:
+
+  # DGraph
+  # From: https://github.com/dgraph-io/dgraph/blob/master/contrib/config/docker/docker-compose.yml
+  zero:
+    image: dgraph/dgraph:latest
+    volumes:
+      - /tmp/data:/dgraph
+    ports:
+      - 5080:5080
+      - 6080:6080
+    restart: on-failure
+    command: dgraph zero --my=zero:5080
+    logging:
+      driver: none
+  alpha:
+    image: dgraph/dgraph:latest
+    volumes:
+      - /tmp/data:/dgraph
+    ports:
+      - 8080:8080
+      - 9080:9080
+    restart: on-failure
+    command: dgraph alpha --my=alpha:7080 --zero=zero:5080
+    logging:
+      driver: none
+  ratel:
+    image: dgraph/dgraph:latest
+    ports:
+      - 8000:8000
+    command: dgraph-ratel
+    logging:
+      driver: none
+
+  # Orchestrator (former `qmstr-master`)
+  master:
+    image: endocodeci/qmstr-master:sha-6f14b29
+    entrypoint: "/usr/local/bin/qmstr-master"
+    command: "--config /home/qmstr/config/qmstr.yaml"
+    depends_on:
+      - zero
+      - alpha
+      - ratel
+    ports:
+      - 50051:50051
+    environment:
+      SERVER_BUILDPATH: "/var/qmstr/buildroot"
+    volumes:
+      - ./qmstr-config.yaml:/home/qmstr/config/qmstr.yaml
+
+  # Module
+  module:
+    image: endocodeci/module
+    working_dir: /home/module
+    volumes:
+      - ./reach.sh:/home/module/reach.sh
+    entrypoint: ./reach.sh
+    depends_on:
+      - master

tests/integration/qmstr-config.yaml

@@ -0,0 +1,15 @@
+project:
+  name: "CI"
+  metadata:
+    message: "Hello World!"
+  # Using docker-compsoe service names
+  # https://docs.docker.com/compose/networking/
+  server:
+    dbAddress: "alpha:9080"
+    rpcAddress: "master:50051"
+  analysis:
+    - analyzer: scancode-analyzer
+      name: "Scancode Analyzer"
+      config:
+        workdir: "/var/qmstr/buildroot"
+        resultfile: "/var/qmstr/buildroot/scancode.json"

tests/integration/reach.sh

@@ -0,0 +1,43 @@
+#!/usr/bin/env bash
+
+set -e
+
+# Logging function
+function __log() {
+    echo "[$1] $2"
+}
+
+function __success() {
+    __log "OK" "$1"
+}
+
+function __fail() {
+    __log "FAIL" "$1"
+    exit "$2"
+}
+
+# Test address connectivity
+function __check_connectivity() {
+    wget --spider -q "$1" # check
+    local wgetreturn=$? # retrieving wget's return code
+    if [[ $wgetreturn -eq 0 ]]; then
+        __success "$1 is reachable"
+    else
+        __fail "$1 is not reachable" ${wgetreturn}
+    fi
+}
+
+# All DGraph exposed addresses
+dgraph_addresses=(
+    alpha:8080
+    ratel:8000
+)
+
+# Checking DGraph addresses
+echo "Checking DGraph addresses: " "${dgraph_addresses[@]}"
+for dgraph_address in "${dgraph_addresses[@]}"; do
+    __check_connectivity "${dgraph_address}"
+done
+
+# All tests 
+__success "All tests have passed"