From cdb94dc1e35940561639d5795eef4180b62131a8 Mon Sep 17 00:00:00 2001
From: Leandro Roberto <leandroroberto.br@gmail.com>
Date: Mon, 18 Feb 2019 21:54:06 -0300
Subject: [PATCH] =?UTF-8?q?add=20comunica=C3=A7=C3=A3o=20websocket=20ao=20?=
 =?UTF-8?q?nginx?=
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
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---
 config/nginx/sapl.conf | 35 +++++++++++++++++++++++++-------
 daphne_start.sh        | 46 ++++++++++++++++++++++++++++++++++++++++++
 docker-compose.yml     |  5 ++++-
 docs/instalacao31.rst  |  6 ++++++
 sapl/settings.py       |  4 +++-
 start.sh               |  7 ++++---
 6 files changed, 91 insertions(+), 12 deletions(-)
 create mode 100755 daphne_start.sh

diff --git a/config/nginx/sapl.conf b/config/nginx/sapl.conf
index ef3dac421..3dcf923b1 100644
--- a/config/nginx/sapl.conf
+++ b/config/nginx/sapl.conf
@@ -1,37 +1,58 @@
 upstream sapl_server {
-
   server unix:/var/interlegis/sapl/run/gunicorn.sock fail_timeout=0;
-
+}
+upstream channels_server {
+  server unix:/var/interlegis/sapl/run/daphne.sock;
 }
 
 server {
-
     listen   80;
     server_name sapl.test;
-
     client_max_body_size 4G;
 
     location /static/ {
-        alias  /var/interlegis/sapl/collected_static/;
+        alias /var/interlegis/sapl/collected_static/;
     }
 
     location /media/ {
-        alias  /var/interlegis/sapl/media/;
+        alias /var/interlegis/sapl/media/;
     }
 
     location / {
+        try_files $uri @proxy_to_app;
+    }
+
+    location /ws/ {
+        try_files $uri @proxyto_ws;
+    }
+
+    location @proxyto_ws {
+        proxy_pass http://channels_server;
+
+        proxy_http_version 1.1;
+        proxy_set_header Upgrade $http_upgrade;
+        proxy_set_header Connection "upgrade";
+
+        proxy_redirect off;
+        proxy_set_header Host $host;
+        proxy_set_header X-Real-IP $remote_addr;
+        proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;
+        proxy_set_header X-Forwarded-Host $server_name;
+    }
+
+    location @proxy_to_app {
         proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;
 
         proxy_set_header Host $http_host;
 
         proxy_redirect off;
 
-
         if (!-f $request_filename) {
             proxy_pass http://sapl_server;
             break;
         }
     }
+
     error_page 500 502 503 504 /500.html;
     location = /500.html {
         root /var/interlegis/sapl/sapl/static/;
diff --git a/daphne_start.sh b/daphne_start.sh
new file mode 100755
index 000000000..e5339d450
--- /dev/null
+++ b/daphne_start.sh
@@ -0,0 +1,46 @@
+#!/bin/bash
+
+# As seen in http://tutos.readthedocs.org/en/latest/source/ndg.html
+
+SAPL_DIR="/var/interlegis/sapl"
+
+# Seta um novo diretório foi passado como raiz para o SAPL
+# caso esse tenha sido passado como parâmetro
+if [ "$1" ]
+then
+    SAPL_DIR="$1"
+fi
+
+NAME="SAPL"                                     # Name of the application (*)
+DJANGODIR=/var/interlegis/sapl/                    # Django project directory (*)
+SOCKFILE=/var/interlegis/sapl/run/daphne.sock    # we will communicate using this unix socket (*)
+USER=`whoami`                                   # the user to run as (*)
+GROUP=`whoami`                                  # the group to run as (*)
+NUM_WORKERS=3                                   # how many worker processes should Gunicorn spawn (*)
+                                                # NUM_WORKERS = 2 * CPUS + 1
+TIMEOUT=60
+MAX_REQUESTS=100                                # number of requests before restarting worker
+DJANGO_SETTINGS_MODULE=sapl.settings            # which settings file should Django use (*)
+DJANGO_ASGI_MODULE=sapl.asgi                    # WSGI module name (*)
+
+echo "Starting $NAME as `whoami` on base dir $SAPL_DIR"
+
+# parameter can be passed to run without virtualenv
+if [[ "$@" != "no-venv" ]]; then
+    # Activate the virtual environment
+    cd $DJANGODIR
+    source /var/interlegis/.virtualenvs/sapl/bin/activate
+    export DJANGO_SETTINGS_MODULE=$DJANGO_SETTINGS_MODULE
+    export PYTHONPATH=$DJANGODIR:$PYTHONPATH
+fi
+
+# Create the run directory if it doesn't exist
+RUNDIR=$(dirname $SOCKFILE)
+test -d $RUNDIR || mkdir -p $RUNDIR
+
+# Start your Django Unicorn
+exec daphne \
+    -u $SOCKFILE ${DJANGO_ASGI_MODULE}:application \
+    --access-log /var/log/sapl/daphne_access.log \
+    -v2
+
diff --git a/docker-compose.yml b/docker-compose.yml
index 599abbbf1..b68488992 100644
--- a/docker-compose.yml
+++ b/docker-compose.yml
@@ -9,7 +9,7 @@ sapldb:
   volumes:
     - sapldb_data:/var/lib/postgresql/data/
   ports:
-    - "5432:5432"
+    - "5434:5432"
 saplredis:
   image: redis:5.0.3-stretch
   restart: always
@@ -28,6 +28,9 @@ sapl:
     EMAIL_HOST_USER: usuariosmtp
     EMAIL_SEND_USER: usuariosmtp
     EMAIL_HOST_PASSWORD: senhasmtp
+    USE_CHANNEL_LAYERS: 'True'
+    PORT_CHANNEL_LAYERS: 6379
+    HOST_CHANNEL_LAYERS: saplredis
     TZ: America/Sao_Paulo
   volumes:
     - sapl_data:/var/interlegis/sapl/data
diff --git a/docs/instalacao31.rst b/docs/instalacao31.rst
index 3611bda4a..d61f54d5c 100644
--- a/docs/instalacao31.rst
+++ b/docs/instalacao31.rst
@@ -150,6 +150,10 @@ Criação da `SECRET_KEY <https://docs.djangoproject.com/es/1.9/ref/settings/#st
       
       FRONTEND_CUSTOM = [True/False]
 
+      USE_CHANNEL_LAYERS = True
+      HOST_CHANNEL_LAYERS: localhost
+      PORT_CHANNEL_LAYERS: 6379
+
       SITE_URL = '[Insira este parâmetro]'
 
       TZ = 'America/Sao_Paulo'
@@ -294,6 +298,8 @@ Django-Channels
 Para ativar Django-Channels e a comunicação via websockets utilizada pelo entry-point sessao/online de sapl-frontend coloque no arquivo .env a variável:
 
     USE_CHANNEL_LAYERS = True
+    HOST_CHANNEL_LAYERS: localhost
+    PORT_CHANNEL_LAYERS: 6379
 
 
 Ao ativar o channels, no ambiente de desenvolvimento é necessário ativar um servidor redis. Utilize/Instale o docker e execute:
diff --git a/sapl/settings.py b/sapl/settings.py
index 1ca615537..cb0cd825b 100644
--- a/sapl/settings.py
+++ b/sapl/settings.py
@@ -210,12 +210,14 @@ ASGI_APPLICATION = "sapl.routing.application"
 
 
 USE_CHANNEL_LAYERS = config('USE_CHANNEL_LAYERS', cast=bool, default=False)
+HOST_CHANNEL_LAYERS = config('HOST_CHANNEL_LAYERS', cast=str, default='localhost')
+PORT_CHANNEL_LAYERS = config('PORT_CHANNEL_LAYERS', cast=int, default=6379)
 
 CHANNEL_LAYERS = {
     'default': {
         'BACKEND': 'channels_redis.core.RedisChannelLayer',
         'CONFIG': {
-            "hosts": [('127.0.0.1', 6379)],
+            "hosts": [(HOST_CHANNEL_LAYERS, PORT_CHANNEL_LAYERS)],
         },
     },
 }
diff --git a/start.sh b/start.sh
index e6fca5879..0953dfb86 100755
--- a/start.sh
+++ b/start.sh
@@ -39,8 +39,9 @@ create_env() {
     echo "USE_SOLR = ""${USE_SOLR-False}" >> $FILENAME
     echo "SOLR_COLLECTION = ""${SOLR_COLLECTION-sapl}" >> $FILENAME
     echo "SOLR_URL = ""${SOLR_URL-http://localhost:8983}" >> $FILENAME
-
-    
+    echo "USE_CHANNEL_LAYERS = ""${USE_CHANNEL_LAYERS-True}" >> $FILENAME
+    echo "PORT_CHANNEL_LAYERS = ""${PORT_CHANNEL_LAYERS-6379}" >> $FILENAME
+    echo "HOST_CHANNEL_LAYERS = ""${HOST_CHANNEL_LAYERS-'saplredis'}" >> $FILENAME
     echo "[ENV FILE] done."
 }
 
@@ -109,5 +110,5 @@ echo "| ███████║██║  ██║██║     ████
 echo "| ╚══════╝╚═╝  ╚═╝╚═╝     ╚══════╝  |"
 echo "-------------------------------------"
 
-/bin/sh gunicorn_start.sh no-venv &
+/bin/sh gunicorn_start.sh no-venv & /bin/sh daphne_start.sh no-venv &
 /usr/sbin/nginx -g "daemon off;"