Update: BaseAPI class now has error handler

mgrctl/api/base.py

@@ -1,14 +1,18 @@
 import sys
 import json
+import click
 import urllib
 import requests
 
+from time import sleep
+
 from mgrctl.settings.api import (
     API_URL,
     API_HEADERS,
     API_EMAIL,
     API_PASSWORD,
-    API_VERIFY_SSL
+    API_VERIFY_SSL,
+    API_COUNT_TRY_CONNECTIONS
 )
 
 
@@ -27,45 +31,64 @@ class BaseAPI(object):
         return f'{self.API_URL}/{self.API_DEFINITION}/{self.API_VERSION}{url}'
 
     def call_api(self, url, method='GET', headers={}, data={}):
-        # Open session
-        with requests.Session() as session:
+        attempt = API_COUNT_TRY_CONNECTIONS
+        while attempt:
             try:
-                url = self._gen_request_url(url)
+                uri = self._gen_request_url(url)
                 headers = self.API_HEADERS if not headers else headers
                 params_str = urllib.parse.urlencode(data, safe="+'()")
                 if method == 'POST':
-                    api_request = session.post(
-                        url=url,
+                    api_request = requests.post(
+                        url=uri,
                         json=data,
                         headers=headers,
                         verify=self.API_VERIFY_SSL
                     )
                 if method == 'GET':
-                    url = f'{url}?{params_str}' if params_str else url
-                    api_request = session.get(
-                        url=url,
+                    uri = f'{uri}?{params_str}' if params_str else uri
+                    api_request = requests.get(
+                        url=uri,
                         headers=headers,
                         verify=self.API_VERIFY_SSL
                     )
             except Exception as error:
-                api_request = {
-                    'result': False,
-                    'error': type(error).__name__
-                }
-                return api_request
-            finally:
-                session.close()
+                click.echo(f'Error: {type(error).__name__}')
+                sys.exit()
 
-        # Get response
+            # Get response:
+            response = self._parse_response(api_request)
+
+            # Validate response:
+            if self._error_handler(response):
+                attempt -= 1
+                sleep(2)  # wait 2 second timeout
+                continue  # new attempt connection
+
+            return response
+
+    def _parse_response(self, api_request):
         try:
             response = json.loads(api_request.text)
-            if 'error' in response and response['error']:
-                print(response['error'])
-                raise sys.exit()
             return response
         except json.decoder.JSONDecodeError:
-            response = {'error': 'Can not parse response'}
-            print(response)
+            click.echo('Error: Invalid API response')
+            raise sys.exit()
+
+    def _is_error(self, response):
+        if response.get('error'):
+            return True
+
+    def _is_error_3004(self, error):
+        if error.get('code') == 3004:
+            return True
+
+    def _error_handler(self, response):
+        if self._is_error(response):
+            error = response.get('error')
+            if self._is_error_3004(error):
+                return True
+            else:
+                click.echo(f'Error: API return {response}')
                 raise sys.exit()
 
 

mgrctl/apps/vm6/auth/commands.py

@@ -38,16 +38,22 @@ def user():
 )
 def ls(all, admins):
     if all:
-        user_cursor.echo_users(role='all')
+        users = user_cursor.get_users(role='all')
     elif admins:
-        user_cursor.echo_users(role='admin')
+        users = user_cursor.get_users(role='admin')
     else:
-        user_cursor.echo_users(role='all')
+        users = user_cursor.get_users(role='all')
+    # print users:
+    user_cursor.echo_users(users)
 
 
-@user.command(help='Generate access key and return auth link(s)')
+@user.command(
+    help='Generate an access key and return auth link(s)',
+    no_args_is_help=True
+)
 @click.option(
     '--id',
+    '_id',
     required=False,
     type=int,
     help='User id'
@@ -62,7 +68,7 @@ def ls(all, admins):
     '--random',
     is_flag=True,
     required=False,
-    help='Interactive mode, ignores other keys'
+    help='Generate access key for the first available admin'
 )
 @click.option(
     '--interactive',
@@ -70,24 +76,21 @@ def ls(all, admins):
     required=False,
     help='Interactive mode, ignores other keys'
 )
-def access(id, count, interactive, random):
-    if id and not count:
-        keys = user_cursor.get_access_keys(user=id, count=1)
-        links = user_cursor.gen_access_links(keys)
-        user_cursor.echo_access_links(links)
-    elif id and count:
-        keys = user_cursor.get_access_keys(user=id, count=count)
-        links = user_cursor.gen_access_links(keys)
-        user_cursor.echo_access_links(links)
-    elif interactive:
-        pass
+def access(_id, count, interactive, random):
+    if _id and not count:
+        keys = user_cursor.get_access_keys(user=_id, count=1)
+    elif _id and count:
+        keys = user_cursor.get_access_keys(user=_id, count=count)
     elif random:
         admin = user_cursor.get_first_random_admin()
-        keys = user_cursor.get_access_keys(user=admin.get('id', 3), count=1)
-        links = user_cursor.gen_access_links(keys)
-        user_cursor.echo_access_links(links)
+        keys = user_cursor.get_access_keys(user=admin.get('id', 3))
+    elif interactive:
+        user_cursor.gen_access_links_interactive()
+        return  # exit from func
     else:
         pass
+    links = user_cursor.gen_access_links(keys)
+    user_cursor.echo_access_links(links)
 
 
 @user.command(help='Generate API token for mgrctl user')

mgrctl/settings/api.py

@@ -1,5 +1,6 @@
 from requests.packages import urllib3
 
+from mgrctl.settings.environment import env
 from mgrctl.settings.platform import (
     PLATFORM_TYPE,
     PLATFORM_VERIFY_SSL,
@@ -26,6 +27,9 @@ API_HEADERS = {"Internal-Auth": "on", "Accept": "application/json"}
 # Alias for import:
 API_VERIFY_SSL = PLATFORM_VERIFY_SSL
 
+# API 3004 Unavailable error handler:
+API_COUNT_TRY_CONNECTIONS = env.int('API_COUNT_TRY_CONNECTIONS', 3)
+
 # Suppress warning from urllib3:
 if not PLATFORM_VERIFY_SSL_WARNING:
     # ! This is not recommended,

mgrctl/utils/api_users.py

@@ -10,38 +10,43 @@ class UserAPI(object):
         self.callback_class = callback_class
         self.callback = callback_class()
 
-    def get_users(self, role: str) -> dict:
+    def get_users(self, role: str) -> list:
         data = {}
         if role == 'admin':
             data = {"where": "((roles+CP+'%@admin%')+AND+(state+EQ+'active'))"}
-        return self.callback.call_api(
+        response = self.callback.call_api(
             url='/user',
             method='GET',
             data=data
         )
+        users = self._extract_users(users=response)
+        return users
 
-    def _format_users(self, users: dict) -> list:
+    def _extract_users(self, users: dict) -> list:
+        return users.get('list', [])
+
+    def _format_users(self, users: list) -> list:
         output = []
-        for user in users.get('list', []):
+        for user in users:
             output.append({
                 'id': user.get('id', ''),
                 'email': user.get('email', ''),
                 'roles': user.get('roles', []),
-                'state': user.get('state', '')
+                'state': user.get('state', ''),
+                # add more fields here...
             })
         return output
 
     def get_first_random_admin(self):
         users = self.get_users(role='admin')
         admin = {}
-        for user in users.get('list', []):
-            if '@admin' in admin.get('roles', []):
+        for user in users:
+            if '@admin' in user.get('roles', []):
                 admin = user
                 break
         return admin
 
-    def echo_users(self, role: str) -> None:
-        users = self.get_users(role)
+    def echo_users(self, users: list) -> None:
         output = self._format_users(users)
         click.echo(tabulate(output, headers='keys'))
 
@@ -66,6 +71,19 @@ class UserAPI(object):
     def echo_access_links(self, links: list) -> None:
         click.echo(tabulate(links, headers='keys'))
 
+    def gen_access_links_interactive(self) -> None:
+        users = self.get_users(role='admin')
+        self.echo_users(users)
+        try:
+            click.echo('Choose user id and count of keys')
+            _id = int(input('User ID: '))
+            count = int(input('Count of keys: '))
+            keys = self.get_access_keys(user=_id, count=count)
+            links = self.gen_access_links(keys)
+            self.echo_access_links(links)
+        except ValueError:
+            click.echo('Error: Invalid, value is not a valid integer')
+
     def gen_api_token(self, email=None, password=None):
         token = self.callback.get_auth_token(email, password)
         return token