Merge pull request #9530 from sivel/rax-inventory-access-network

rax.py inventory: improvements

plugins/inventory/rax.ini

@@ -0,0 +1,57 @@
+# Ansible Rackspace external inventory script settings
+#
+
+[rax]
+
+# Environment Variable: RAX_CREDS_FILE
+#
+# An optional configuration that points to a pyrax-compatible credentials
+# file.
+#
+# If not supplied, rax.py will look for a credentials file
+# at ~/.rackspace_cloud_credentials.  It uses the Rackspace Python SDK,
+# and therefore requires a file formatted per the SDK's specifications.
+#
+# https://github.com/rackspace/pyrax/blob/master/docs/getting_started.md
+# creds_file = ~/.rackspace_cloud_credentials
+
+# Environment Variable: RAX_REGION
+#
+# An optional environment variable to narrow inventory search
+# scope. If used, needs a value like ORD, DFW, SYD (a Rackspace
+# datacenter) and optionally accepts a comma-separated list.
+# regions = IAD,ORD,DFW
+
+# Environment Variable: RAX_ENV
+#
+# A configuration that will use an environment as configured in
+# ~/.pyrax.cfg, see
+# https://github.com/rackspace/pyrax/blob/master/docs/getting_started.md
+# env = prod
+
+# Environment Variable: RAX_META_PREFIX
+# Default: meta
+#
+# A configuration that changes the prefix used for meta key/value groups.
+# For compatibility with ec2.py set to "tag"
+# meta_prefix = meta
+
+# Environment Variable: RAX_ACCESS_NETWORK
+# Default: public
+#
+# A configuration that will tell the inventory script to use a specific
+# server network to determine the ansible_ssh_host value. If no address
+# is found, ansible_ssh_host will not be set. Accepts a comma-separated
+# list of network names, the first found wins.
+# access_network = public
+
+# Environment Variable: RAX_ACCESS_IP_VERSION
+# Default: 4
+#
+# A configuration related to "access_network" that will attempt to
+# determine the ansible_ssh_host value for either IPv4 or IPv6. If no
+# address is found, ansible_ssh_host will not be set.
+# Acceptable values are: 4 or 6. Values other than 4 or 6
+# will be ignored, and 4 will be used. Accepts a comma separated list,
+# the first found wins.
+# access_ip_version = 4

plugins/inventory/rax.py

@@ -1,8 +1,10 @@
 #!/usr/bin/env python
 
-# (c) 2013, Jesse Keating <jesse.keating@rackspace.com>
+# (c) 2013, Jesse Keating <jesse.keating@rackspace.com,
+#           Paul Durivage <paul.durivage@rackspace.com>,
+#           Matt Martz <matt@sivel.net>
 #
-# This file is part of Ansible,
+# This file is part of Ansible.
 #
 # Ansible is free software: you can redistribute it and/or modify
 # it under the terms of the GNU General Public License as published by
@@ -17,16 +19,20 @@
 # You should have received a copy of the GNU General Public License
 # along with Ansible.  If not, see <http://www.gnu.org/licenses/>.
 
-DOCUMENTATION = '''
+"""
----
+Rackspace Cloud Inventory
-inventory: rax
+
-short_description: Rackspace Public Cloud external inventory script
+Authors:
-description:
+    Jesse Keating <jesse.keating@rackspace.com,
-  - Generates inventory that Ansible can understand by making API request to
+    Paul Durivage <paul.durivage@rackspace.com>,
+    Matt Martz <matt@sivel.net>
+
+
+Description:
+    Generates inventory that Ansible can understand by making API request to
     Rackspace Public Cloud API
-  - |
+
-    When run against a specific host, this script returns the following
+    When run against a specific host, this script returns variables similar to:
-    variables:
         rax_os-ext-sts_task_state
         rax_addresses
         rax_links
@@ -50,72 +56,131 @@ description:
         rax_tenant_id
         rax_loaded
 
-    where some item can have nested structure.
+Configuration:
-  - credentials are set in a credentials file
+    rax.py can be configured using a rax.ini file or via environment
-version_added: None
+    variables. The rax.ini file should live in the same directory along side
-options:
+    this script.
-  creds_file:
+
-    description:
+    The section header for configuration values related to this
-     - File to find the Rackspace Public Cloud credentials in
+    inventory plugin is [rax]
-    required: true
+
-    default: null
+    [rax]
-  region:
+    creds_file = ~/.rackspace_cloud_credentials
-    description:
+    regions = IAD,ORD,DFW
-     - An optional value to narrow inventory scope, i.e. DFW, ORD, IAD, LON
+    env = prod
-     required: false
+    meta_prefix = meta
-     default: null
+    access_network = public
-authors:
+    access_ip_version = 4
-  - Jesse Keating <jesse.keating@rackspace.com>
+
-  - Paul Durivage <paul.durivage@rackspace.com>
+    Each of these configurations also has a corresponding environment variable.
-  - Matt Martz <matt@sivel.net>
+    An environment variable will override a configuration file value.
-notes:
+
-  - RAX_CREDS_FILE is an optional environment variable that points to a
+    creds_file:
-    pyrax-compatible credentials file.
+        Environment Variable: RAX_CREDS_FILE
-  - If RAX_CREDS_FILE is not supplied, rax.py will look for a credentials file
+
-    at ~/.rackspace_cloud_credentials.
+        An optional configuration that points to a pyrax-compatible credentials
-  - See https://github.com/rackspace/pyrax/blob/master/docs/getting_started.md#authenticating
+        file.
-  - RAX_REGION is an optional environment variable to narrow inventory search
+
-    scope
+        If not supplied, rax.py will look for a credentials file
-  - RAX_REGION, if used, needs a value like ORD, DFW, SYD (a Rackspace
+        at ~/.rackspace_cloud_credentials.  It uses the Rackspace Python SDK,
-    datacenter) and optionally accepts a comma-separated list
+        and therefore requires a file formatted per the SDK's specifications.
-  - RAX_ENV is an environment variable that will use an environment as
+
-    configured in ~/.pyrax.cfg, see
+        https://github.com/rackspace/pyrax/blob/master/docs/getting_started.md
-    https://github.com/rackspace/pyrax/blob/master/docs/getting_started.md#pyrax-configuration
+
-  - RAX_META_PREFIX is an environment variable that changes the prefix used
+    regions:
-    for meta key/value groups. For compatibility with ec2.py set to
+        Environment Variable: RAX_REGION
-    RAX_META_PREFIX=tag
+
-requirements: [ "pyrax" ]
+        An optional environment variable to narrow inventory search
-examples:
+        scope. If used, needs a value like ORD, DFW, SYD (a Rackspace
-    - description: List server instances
+        datacenter) and optionally accepts a comma-separated list.
-      code: RAX_CREDS_FILE=~/.raxpub rax.py --list
+
-    - description: List servers in ORD datacenter only
+    environment:
-      code: RAX_CREDS_FILE=~/.raxpub RAX_REGION=ORD rax.py --list
+        Environment Variable: RAX_ENV
-    - description: List servers in ORD and DFW datacenters
+
-      code: RAX_CREDS_FILE=~/.raxpub RAX_REGION=ORD,DFW rax.py --list
+        A configuration that will use an environment as configured in
-    - description: Get server details for server named "server.example.com"
+        ~/.pyrax.cfg, see
-      code: RAX_CREDS_FILE=~/.raxpub rax.py --host server.example.com
+        https://github.com/rackspace/pyrax/blob/master/docs/getting_started.md
-'''
+
+    meta_prefix:
+        Environment Variable: RAX_META_PREFIX
+        Default: meta
+
+        A configuration that changes the prefix used for meta key/value groups.
+        For compatibility with ec2.py set to "tag"
+
+    access_network:
+        Environment Variable: RAX_ACCESS_NETWORK
+        Default: public
+
+        A configuration that will tell the inventory script to use a specific
+        server network to determine the ansible_ssh_host value. If no address
+        is found, ansible_ssh_host will not be set. Accepts a comma-separated
+        list of network names, the first found wins.
+
+    access_ip_version:
+        Environment Variable: RAX_ACCESS_IP_VERSION
+        Default: 4
+
+        A configuration related to "access_network" that will attempt to
+        determine the ansible_ssh_host value for either IPv4 or IPv6. If no
+        address is found, ansible_ssh_host will not be set.
+        Acceptable values are: 4 or 6. Values other than 4 or 6
+        will be ignored, and 4 will be used. Accepts a comma-separated list,
+        the first found wins.
+
+Examples:
+    List server instances
+    $ RAX_CREDS_FILE=~/.raxpub rax.py --list
+
+    List servers in ORD datacenter only
+    $ RAX_CREDS_FILE=~/.raxpub RAX_REGION=ORD rax.py --list
+
+    List servers in ORD and DFW datacenters
+    $ RAX_CREDS_FILE=~/.raxpub RAX_REGION=ORD,DFW rax.py --list
+
+    Get server details for server named "server.example.com"
+    $ RAX_CREDS_FILE=~/.raxpub rax.py --host server.example.com
+
+    Use the instance private IP to connect (instead of public IP)
+    $ RAX_CREDS_FILE=~/.raxpub RAX_ACCESS_NETWORK=private rax.py --list
+"""
 
 import os
 import re
 import sys
 import argparse
+import warnings
 import collections
+import ConfigParser
 
-from types import NoneType
+from ansible.constants import get_config, mk_boolean
 
 try:
     import json
-except:
+except ImportError:
     import simplejson as json
 
 try:
     import pyrax
+    from pyrax.utils import slugify
 except ImportError:
     print('pyrax is required for this module')
     sys.exit(1)
 
-NON_CALLABLES = (basestring, bool, dict, int, list, NoneType)
+NON_CALLABLES = (basestring, bool, dict, int, list, type(None))
+
+
+def load_config_file():
+    p = ConfigParser.ConfigParser()
+    config_file = os.path.join(os.path.dirname(os.path.realpath(__file__)),
+                               'rax.ini')
+    try:
+        p.read(config_file)
+    except ConfigParser.Error:
+        return None
+    else:
+        return p
+p = load_config_file()
 
 
 def rax_slugify(value):
@@ -126,7 +191,7 @@ def to_dict(obj):
     instance = {}
     for key in dir(obj):
         value = getattr(obj, key)
-        if (isinstance(value, NON_CALLABLES) and not key.startswith('_')):
+        if isinstance(value, NON_CALLABLES) and not key.startswith('_'):
             key = rax_slugify(key)
             instance[key] = value
 
@@ -153,11 +218,33 @@ def _list(regions):
     groups = collections.defaultdict(list)
     hostvars = collections.defaultdict(dict)
     images = {}
+    cbs_attachments = collections.defaultdict(dict)
+
+    prefix = get_config(p, 'rax', 'meta_prefix', 'RAX_META_PREFIX', 'meta')
+
+    networks = get_config(p, 'rax', 'access_network', 'RAX_ACCESS_NETWORK',
+                          'public', islist=True)
+    try:
+        ip_versions = map(int, get_config(p, 'rax', 'access_ip_version',
+                                          'RAX_ACCESS_IP_VERSION', 4,
+                                          islist=True))
+    except:
+        ip_versions = [4]
+    else:
+        ip_versions = [v for v in ip_versions if v in [4, 6]]
+        if not ip_versions:
+            ip_versions = [4]
 
     # Go through all the regions looking for servers
     for region in regions:
         # Connect to the region
         cs = pyrax.connect_to_cloudservers(region=region)
+        if cs is None:
+            warnings.warn(
+                'Connecting to Rackspace region "%s" has caused Pyrax to '
+                'return a NoneType. Is this a valid region?' % region,
+                RuntimeWarning)
+            continue
         for server in cs.servers.list():
             # Create a group on region
             groups[region].append(server.name)
@@ -178,11 +265,33 @@ def _list(regions):
             hostvars[server.name]['rax_region'] = region
 
             for key, value in server.metadata.iteritems():
-                prefix = os.getenv('RAX_META_PREFIX', 'meta')
                 groups['%s_%s_%s' % (prefix, key, value)].append(server.name)
 
             groups['instance-%s' % server.id].append(server.name)
             groups['flavor-%s' % server.flavor['id']].append(server.name)
+
+            # Handle boot from volume
+            if not server.image:
+                if not cbs_attachments[region]:
+                    cbs = pyrax.connect_to_cloud_blockstorage(region)
+                    for vol in cbs.list():
+                        if mk_boolean(vol.bootable):
+                            for attachment in vol.attachments:
+                                metadata = vol.volume_image_metadata
+                                server_id = attachment['server_id']
+                                cbs_attachments[region][server_id] = {
+                                    'id': metadata['image_id'],
+                                    'name': slugify(metadata['image_name'])
+                                }
+                image = cbs_attachments[region].get(server.id)
+                if image:
+                    server.image = {'id': image['id']}
+                    hostvars[server.name]['rax_image'] = server.image
+                    hostvars[server.name]['rax_boot_source'] = 'volume'
+                    images[image['id']] = image['name']
+            else:
+                hostvars[server.name]['rax_boot_source'] = 'local'
+
             try:
                 imagegroup = 'image-%s' % images[server.image['id']]
                 groups[imagegroup].append(server.name)
@@ -198,7 +307,30 @@ def _list(regions):
                     groups['image-%s' % server.image['id']].append(server.name)
 
             # And finally, add an IP address
-            hostvars[server.name]['ansible_ssh_host'] = server.accessIPv4
+            ansible_ssh_host = None
+            # use accessIPv[46] instead of looping address for 'public'
+            for network_name in networks:
+                if ansible_ssh_host:
+                    break
+                if network_name == 'public':
+                    for version_name in ip_versions:
+                        if ansible_ssh_host:
+                            break
+                        if version_name == 6 and server.accessIPv6:
+                            ansible_ssh_host = server.accessIPv6
+                        elif server.accessIPv4:
+                            ansible_ssh_host = server.accessIPv4
+                if not ansible_ssh_host:
+                    addresses = server.addresses.get(network_name, [])
+                    for address in addresses:
+                        for version_name in ip_versions:
+                            if ansible_ssh_host:
+                                break
+                            if address.get('version') == version_name:
+                                ansible_ssh_host = address.get('addr')
+                                break
+            if ansible_ssh_host:
+                hostvars[server.name]['ansible_ssh_host'] = ansible_ssh_host
 
     if hostvars:
         groups['_meta'] = {'hostvars': hostvars}
@@ -218,16 +350,18 @@ def parse_args():
 def setup():
     default_creds_file = os.path.expanduser('~/.rackspace_cloud_credentials')
 
-    env = os.getenv('RAX_ENV', None)
+    env = get_config(p, 'rax', 'environment', 'RAX_ENV', None)
     if env:
         pyrax.set_environment(env)
 
     keyring_username = pyrax.get_setting('keyring_username')
 
     # Attempt to grab credentials from environment first
-    try:
+    creds_file = get_config(p, 'rax', 'creds_file',
-        creds_file = os.path.expanduser(os.environ['RAX_CREDS_FILE'])
+                            'RAX_CREDS_FILE', None)
-    except KeyError, e:
+    if creds_file is not None:
+        creds_file = os.path.expanduser(creds_file)
+    else:
         # But if that fails, use the default location of
         # ~/.rackspace_cloud_credentials
         if os.path.isfile(default_creds_file):
@@ -235,7 +369,7 @@ def setup():
         elif not keyring_username:
             sys.stderr.write('No value in environment variable %s and/or no '
                              'credentials file at %s\n'
-                             % (e.message, default_creds_file))
+                             % ('RAX_CREDS_FILE', default_creds_file))
             sys.exit(1)
 
     identity_type = pyrax.get_setting('identity_type')
@@ -256,7 +390,9 @@ def setup():
     if region:
         regions.append(region)
     else:
-        for region in os.getenv('RAX_REGION', 'all').split(','):
+        region_list = get_config(p, 'rax', 'regions', 'RAX_REGION', 'all',
+                                 islist=True)
+        for region in region_list:
             region = region.strip().upper()
             if region == 'ALL':
                 regions = pyrax.regions