Feat: environment variable on config.

README.md

@@ -71,13 +71,16 @@ The current config special properties are the following:
         "color": "bool //default=true"
     },
     "server": {
-        "port": "int //default=8888",
+        "port": "int //default=8080",
         "cors": "string or false //default=false"
     },
     "utils": ["string //default=[]. list of utils in order to load"],
     "(...)": "(...) //you can add any other key and access it via `api.config['my_key']`"
 }
 ```
+You can also use environment variables
+like `$PORT` (for `PORT` env var), and set a default value if no env var is found
+like `$PORT|8080` or `$PORT|8080|int` (if type is needed)
 
 ### ENDPOINTS
 This will be your main dev dir

app.py

@@ -1,3 +1,3 @@
 from apys import server
 
-server.start()
+server.start('dev')

apys/__init__.py

@@ -1 +1 @@
-__version__ = '3.0.0'
+__version__ = '3.1.0'

apys/apiobject.py

@@ -92,4 +92,3 @@ def error(self, msg, to='debug', ex=False):
 
     def __reduce__(self):
         return ApiObject, (self.config_file, )
-

apys/config.py

@@ -24,7 +24,7 @@ def load(scope=None):
         raise EnvironmentError('No config file found for {}'.format(scope))
 
     with open(path, 'r') as config:
-        obj = json.loads(config.read())
+        obj = __get_env(json.loads(config.read()))
         obj['scope'] = scope
 
         # Default Values
@@ -69,3 +69,54 @@ def __fill_default_value(obj, key, default_value):
     """
     if key not in obj:
         obj[key] = default_value
+
+
+def __get_env(obj):
+    """
+    gets value from environment variable if `$` is preceded on value
+
+    i.e.:
+
+    ```
+    {
+        "key": "$API_KEY"
+        "db_url": "$DB|localhost"
+        "port": "$PORT|8080|int"
+    }
+    ```
+
+     * `key` will now have the value of the `API_KEY` environment variable, or '$API_KEY' if env var does not exists
+     * `db_url` will now have the value of the `DB` environment variable, or 'localhost' if env var does not exists
+     * `port` will now have the value of the `PORT` environment variable, or 8080 if env var does not exists
+
+
+    :param obj: object to format
+    :return: formatted object
+    """
+    for key in obj:
+        if type(obj[key]) == dict:
+            obj[key] = __get_env(obj[key])
+        elif type(obj[key]) == str and obj[key][0] == '$':
+            env_var = obj[key][1:]
+
+            # Case no default value
+            if env_var.count('|') == 0:
+                if env_var in os.environ:
+                    obj[key] = os.environ[env_var]
+
+            # Case default value
+            if env_var.count('|') == 1:
+                env_var, default_val = env_var.split('|')
+                if env_var in os.environ:
+                    obj[key] = os.environ[env_var]
+                else:
+                    obj[key] = default_val
+
+            # Case default value with type
+            if env_var.count('|') == 2:
+                env_var, default_val, default_type = env_var.split('|')
+                if env_var in os.environ:
+                    obj[key] = os.environ[env_var]
+                else:
+                    obj[key] = eval(default_type)(default_val)
+    return obj

apys/settings.py

@@ -10,7 +10,7 @@
 
 DEFAULT_LOG = False
 DEFAULT_COLOR = True
-DEFAULT_PORT = 8888
+DEFAULT_PORT = '$PORT|8080|int'
 DEFAULT_CORS = False
 
 ##
@@ -22,7 +22,7 @@
 DIR_FILTERS = 'filters'
 DIR_UTILS = 'utils'
 
-DEFAULT_PROD_PORT = 80
+DEFAULT_PROD_PORT = '$PORT|80|int'
 DEFAULT_PROD_CORS = False
 DEFAULT_PROD_LOG_DIR = os.path.join('/', 'var', 'logs', 'apys')
 DEFAULT_PROD_LOG_DEBUG_FILE = 'debug.log'

demo/hello_world/config/dev.json

@@ -1,6 +1,6 @@
 {
     "server": {
-        "port": 8080,
+        "port": "$PORT|8080|int",
         "cors": "*"
     },
     "utils": [

demo/hello_world/config/prod.json

@@ -1,6 +1,6 @@
 {
     "server": {
-        "port": 8080,
+        "port": "$PORT",
         "cors": false
     },
     "utils": [