handle HALFAPI_DOMAIN_MODULE environment variable

halfapi/conf.py

@@ -98,12 +98,17 @@ PROJECT_NAME = CONFIG.get('project_name',
 if environ.get('HALFAPI_DOMAIN_NAME'):
     DOMAIN_NAME = environ.get('HALFAPI_DOMAIN_NAME')
     CONFIG['domain'] = {}
+
     CONFIG['domain'][DOMAIN_NAME] = {
         'enabled': True,
         'name': DOMAIN_NAME,
         'prefix': False
     }
 
+    if environ.get('HALFAPI_DOMAIN_MODULE'):
+        dom_module = environ.get('HALFAPI_DOMAIN_MODULE')
+        CONFIG['domain'][DOMAIN_NAME]['module'] = dom_module
+
 if len(CONFIG.get('domain', {}).keys()) == 0:
     logger.info('No domains')
 

halfapi/half_domain.py

@@ -27,7 +27,7 @@ from .lib.domain_middleware import DomainMiddleware
 from .logging import logger
 
 class HalfDomain(Starlette):
-    def __init__(self, domain, router=None, acl=None, app=None):
+    def __init__(self, domain, module=None, router=None, acl=None, app=None):
         """
         Parameters:
             domain (str): Module name (should be importable)
@@ -37,7 +37,7 @@ class HalfDomain(Starlette):
         """
         self.app = app
 
-        self.m_domain = importlib.import_module(domain)
+        self.m_domain = importlib.import_module(domain) if module is None else module
         self.name = getattr(self.m_domain, '__name__', domain)
         self.id = getattr(self.m_domain, '__id__')
         self.version = getattr(self.m_domain, '__version__', '0.0.0')
@@ -47,13 +47,17 @@ class HalfDomain(Starlette):
         self.deps = getattr(self.m_domain, '__deps__', tuple())
 
         if not router:
-            self.router = getattr('__router__', domain, '.routers')
+            self.router = getattr(domain, '__router__', '.routers')
         else:
             self.router = router
 
-        self.m_router = importlib.import_module(self.router, domain)
+        self.m_router = None
+        try:
+            self.m_router = importlib.import_module(self.router, self.m_domain.__package__)
+        except AttributeError:
+            raise Exception('no router module')
 
-        self.m_acl = HalfDomain.m_acl(domain, acl)
+        self.m_acl = HalfDomain.m_acl(self.m_domain, acl)
 
         self.config = { **app.config }
 
@@ -86,31 +90,37 @@ class HalfDomain(Starlette):
         )
 
     @staticmethod
-    def m_acl(domain, acl=None):
+    def m_acl(module, acl=None):
-        """ Returns the imported acl module for the domain
+        """ Returns the imported acl module for the domain module
         """
         if (not acl):
-            acl = getattr('__acl__', domain, '.acl')
+            acl = getattr(module, '__acl__', '.acl')
 
-        return importlib.import_module(acl, domain)
+        return importlib.import_module(acl, module.__package__)
 
 
     @staticmethod
-    def acls(domain, acl=None):
+    def acls(domain, module=None, acl=None):
         """ Returns the ACLS constant for the given domain
         """
-        m_acl = HalfDomain.m_acl(domain, acl)
+        if not module:
+            module = importlib.import_module(domain)
+
+        m_acl = HalfDomain.m_acl(module, acl)
         try:
             return getattr(m_acl, 'ACLS')
         except AttributeError:
             raise Exception(f'Missing acl.ACLS constant in {domain} module')
 
     @staticmethod
-    def acls_route(domain, acl=None):
+    def acls_route(domain, module=None, acl=None):
         d_res = {}
-        m_acl = HalfDomain.m_acl(domain, acl)
+        if module is None:
+            module = importlib.import_module(domain)
 
-        for acl_name, doc, order in HalfDomain.acls(domain, acl):
+        m_acl = HalfDomain.m_acl(module, acl)
+
+        for acl_name, doc, order in HalfDomain.acls(domain, acl=acl):
             fct = getattr(m_acl, acl_name)
             d_res[acl_name] = {
                 'callable': fct,

halfapi/halfapi.py

@@ -122,7 +122,12 @@ class HalfAPI(Starlette):
 
             domain_key = domain.get('name', key)
 
-            self.add_domain(domain_key, domain.get('router'), domain.get('acl'), path)
+            self.add_domain(
+                domain_key,
+                domain.get('module'),
+                domain.get('router'),
+                domain.get('acl'),
+                path)
 
             schemas.append(self.__domains[domain_key].schema())
 
@@ -209,7 +214,10 @@ class HalfAPI(Starlette):
 
     def acls_route(self):
         res = {
-            domain: HalfDomain.acls_route(domain, domain_conf.get('acl'))
+            domain: HalfDomain.acls_route(
+                domain,
+                module=domain_conf.get('module'),
+                acl=domain_conf.get('acl'))
             for domain, domain_conf in self.config.get('domain', {}).items()
             if isinstance(domain_conf, dict) and domain_conf.get('enabled', False)
         }
@@ -237,17 +245,39 @@ class HalfAPI(Starlette):
     def domains(self):
         return self.__domains
 
-    def add_domain(self, name, router=None, acl=None, path='/', config=None):
+    def add_domain(self, name, module=None, router=None, acl=None, path='/', config=None):
+
+        # logger.debug('HalfApi.add_domain %s %s %s %s %s',
+        #     name,
+        #     module,
+        #     router,
+        #     acl,
+        #     path,
+        #     config)
+
         if config:
             self.config['domain'][name] = config
 
+        if not module:
+            module = name
+
+        try:
             self.__domains[name] = HalfDomain(
                 name,
-            router,
+                module=importlib.import_module(module),
-            acl,
+                router=router,
-            self
+                acl=acl,
+                app=self
             )
 
+        except ImportError as exc:
+            print(
+                'Cannot instantiate HalfDomain {} with module {}'.format(
+                name,
+                module
+            ))
+            raise exc
+
         self.mount(path, self.__domains[name])
 
         return self.__domains[name]