Reading from Docker and Swarm

README.md

@@ -23,14 +23,13 @@ docker run \
     -e HAPROXY_USERNAME=admin \
     -e HAPROXY_PASSWORD=password \
     -e HAPROXY_STATS_PORT=1936 \ 
-    -e REFRESH_STATE=1 \
     -v /var/run/docker.sock:/var/run/docker.sock \
     -d byjg/easy-haproxy
 ```
 
 The `DISCOVER` environment variable will define where is located your containers (see below more details):
 - swarm
-- awsecs
+- static (maps to /etc/haproxy/easyconfig.yml)
 
 # Tags to defined:
 

assets/scripts/haproxy-reload.sh

@@ -1,5 +1,48 @@
 #!/usr/bin/env bash
 
-echo "Reloading..."
+cd /scripts
 
+RELOAD="true"
+
+if [[ "$DISCOVER" == "static" ]]; then
+    CONTROL_FILE="/etc/haproxy/haproxy.cfg"
+    cp ${CONTROL_FILE} ${CONTROL_FILE}.old
+    python3 static.py /etc/haproxy/easyconfig.yml > ${CONTROL_FILE}
+else
+    CONTROL_FILE="/tmp/.docker_data"
+    touch ${CONTROL_FILE}
+    mv ${CONTROL_FILE} ${CONTROL_FILE}.old
+    touch ${CONTROL_FILE}
+
+    if [[ "$DISCOVER" == "docker" ]]; then
+        CONTAINERS=$(docker ps -q)
+        LABEL_PATH=".Config.Labels"
+    else
+        CONTAINERS=$(docker node ps $(docker node ls -q) --format "{{ .Name }}" --filter desired-state=running | cut -d. -f1 | sort | uniq)
+        LABEL_PATH=".Spec.Labels"
+    fi
+
+    for container in ${CONTAINERS}; do
+        docker inspect --format "{{ json $LABEL_PATH }}" ${container} | xargs -I % echo ${container}=% >> ${CONTROL_FILE}
+    done
+
+    if cmp -s ${CONTROL_FILE} ${CONTROL_FILE}.old ; then
+        RELOAD="false"
+    else
+        python3 swarm.py > /etc/haproxy/haproxy.cfg
+    fi
+fi
+
+if cmp -s ${CONTROL_FILE} ${CONTROL_FILE}.old ; then
+    RELOAD="false"
+fi
+
+if [[ ! -z "$1" ]]; then
+    echo "Initial configuration"
+    RELOAD="false"
+fi
+
+if [[ "$RELOAD" == "true" ]]; then
+    echo "Reloading..."
     /usr/local/sbin/haproxy -W -f /etc/haproxy/haproxy.cfg -p /run/haproxy.pid -x /var/run/haproxy.sock -sf $(cat /run/haproxy.pid) &
+fi

assets/scripts/haproxy.sh

@@ -1,5 +1,7 @@
 #!/usr/bin/env bash
 
+source /scripts/haproxy-reload.sh initial
+
 /usr/local/sbin/haproxy -W -f /etc/haproxy/haproxy.cfg -p /run/haproxy.pid -S /var/run/haproxy.sock
 
 while true; do

static.py

@@ -3,12 +3,12 @@ import sys
 from easymapping import HaproxyConfigGenerator
 
 if len(sys.argv) != 2:
-    print("You need to pass the easyconfig.cfg path")
+    print("You need to pass the easyconfig.yml path")
     exit(1)
 
 
 with open(sys.argv[1], 'r') as content_file:
-    parsed = yaml.load(content_file.read())
+    parsed = yaml.load(content_file.read(), Loader=yaml.FullLoader)
 
 cfg = HaproxyConfigGenerator(parsed)
 print(cfg.generate())

swarm.py

@@ -2,13 +2,19 @@ import os
 import json
 from easymapping import HaproxyConfigGenerator
 
-path = os.path.dirname(os.path.realpath(__file__))
-with open(path + "/.docker_data", 'r') as content_file:
+# path = os.path.dirname(os.path.realpath(__file__))
+with open("/tmp/.docker_data", 'r') as content_file:
     lineList = content_file.readlines()
 
 result = {
     "easymapping": []
 }
+if os.getenv("HAPROXY_USERNAME"):
+    result["stats"] = {
+        "username": os.getenv("HAPROXY_USERNAME"),
+        "password": os.getenv("HAPROXY_PASSWORD"),
+        "port": os.getenv("HAPROXY_STATS_PORT"),
+    }
 
 for line in lineList:
     line = line.strip()
@@ -33,7 +39,7 @@ for line in lineList:
 
             redirect = d["com.byjg.easyhaproxy.redirect." + definition] if "com.byjg.easyhaproxy.redirect." + definition in d else ""
             for r in redirect.split(","):
-                r_parts = r.split("=>")
+                r_parts = r.split("--")
                 data["redirect"][r_parts[0]] = r_parts[1]
 
             result["easymapping"].append(data)
@@ -42,7 +48,6 @@ for line in lineList:
 cfg = HaproxyConfigGenerator(result)
 print(cfg.generate())
 
-print(result)
 # print(jsonStr)
 
 

swarm.sh

@@ -5,13 +5,13 @@
 #    -l com.byjg.easyhaproxy.port.http=80 \
 #    -l com.byjg.easyhaproxy.port.localport=80 \
 #    -l com.byjg.easyhaproxy.host.http=byjg.com.br \
-#    -l com.byjg.easyhaproxy.redirect.http=byjg.com.br%http://www.byjg.com.br,byjg.com%http://www.byjg.com.br \
+#    -l com.byjg.easyhaproxy.redirect.http=byjg.com.br--http://www.byjg.com.br,byjg.com--http://www.byjg.com.br \
 #-d byjg/php:7.3-fpm-nginx
 
 
-touch ./.docker_data ./docker_data_old
+touch /tmp/.docker_data /tmp/docker_data_old
 
-mv ./.docker_data ./docker_data_old
+cp ./.docker_data ./docker_data_old
 
 CONTAINERS=$(docker node ps $(docker node ls -q) --format "{{ .Name }}" --filter desired-state=running | cut -d. -f1 | sort | uniq)
 

templates/haproxy.cfg.j2

@@ -63,6 +63,6 @@ backend srv_{{ host }}
     option forwardfor
     http-request set-header X-Forwarded-Port %[dst_port]
     http-request add-header X-Forwarded-Proto https if { ssl_fc }
-    server srv {{ k }} check weight 1
+    server srv {{ o["hosts"][k] }} check weight 1
     {% endfor %}
 {% endfor %}