issue #994: use HAS_BOTO to determine if import was successful:

- removed import of sys module.
- HAS_BOTO constant to check if import was successful.
- trigger a failure when import fails.
- removed unnecessary imports.

cloud/amazon/ec2.py

@@ -487,7 +487,6 @@ EXAMPLES = '''
 
 '''
 
-import sys
 import time
 from ast import literal_eval
 
@@ -496,9 +495,10 @@ try:
     from boto.ec2.blockdevicemapping import BlockDeviceType, BlockDeviceMapping
     from boto.exception import EC2ResponseError
     from boto.vpc import VPCConnection
+    HAS_BOTO = True
 except ImportError:
-    print "failed=True msg='boto required for this module'"
-    sys.exit(1)
+    HAS_BOTO = False
+
 
 def find_running_instances_by_count_tag(module, ec2, count_tag, zone=None):
 
@@ -782,7 +782,6 @@ def create_instances(module, ec2, vpc, override_count=None):
     # group_id and group_name are exclusive of each other
     if group_id and group_name:
         module.fail_json(msg = str("Use only one type of parameter (group_name) or (group_id)"))
-        sys.exit(1)
 
     vpc_id = None
     if vpc_subnet_id:
@@ -1203,6 +1202,9 @@ def main():
                              ],
     )
 
+    if not HAS_BOTO:
+        module.fail_json(msg='boto required for this module')
+
     ec2 = ec2_connect(module)
 
     ec2_url, aws_access_key, aws_secret_key, region = get_ec2_creds(module)

cloud/amazon/ec2_ami.py

@@ -129,15 +129,17 @@ EXAMPLES = '''
     state: absent
 
 '''
+
 import sys
 import time
 
 try:
     import boto
     import boto.ec2
+    HAS_BOTO = True
 except ImportError:
-    print "failed=True msg='boto required for this module'"
-    sys.exit(1)
+    HAS_BOTO = False
+
 
 def create_image(module, ec2):
     """
@@ -226,6 +228,7 @@ def deregister_image(module, ec2):
     module.exit_json(msg="AMI deregister/delete operation complete", changed=True)
     sys.exit(0)
 
+
 def main():
     argument_spec = ec2_argument_spec()
     argument_spec.update(dict(
@@ -242,6 +245,9 @@ def main():
     )
     module = AnsibleModule(argument_spec=argument_spec)
 
+    if not HAS_BOTO:
+        module.fail_json(msg='boto required for this module')
+
     try:
         ec2 = ec2_connect(module)
     except Exception, e:

cloud/amazon/ec2_asg.py

@@ -189,7 +189,6 @@ to "replace_instances":
     region: us-east-1
 '''
 
-import sys
 import time
 
 from ansible.module_utils.basic import *
@@ -199,9 +198,9 @@ try:
     import boto.ec2.autoscale
     from boto.ec2.autoscale import AutoScaleConnection, AutoScalingGroup, Tag
     from boto.exception import BotoServerError
+    HAS_BOTO = True
 except ImportError:
-    print "failed=True msg='boto required for this module'"
-    sys.exit(1)
+    HAS_BOTO = False
 
 ASG_ATTRIBUTES = ('availability_zones', 'default_cooldown', 'desired_capacity',
     'health_check_period', 'health_check_type', 'launch_config_name',
@@ -617,6 +616,10 @@ def main():
         argument_spec=argument_spec, 
         mutually_exclusive = [['replace_all_instances', 'replace_instances']]
     )
+
+    if not HAS_BOTO:
+        module.fail_json(msg='boto required for this module')
+
     state = module.params.get('state')
     replace_instances = module.params.get('replace_instances')
     replace_all_instances = module.params.get('replace_all_instances')

cloud/amazon/ec2_eip.py

@@ -90,10 +90,9 @@ EXAMPLES = '''
 
 try:
     import boto.ec2
+    HAS_BOTO = True
 except ImportError:
-    boto_found = False
-else:
-    boto_found = True
+    HAS_BOTO = False
 
 
 wait_timeout = 0  
@@ -251,8 +250,8 @@ def main():
         supports_check_mode=True
     )
 
-    if not boto_found:
-        module.fail_json(msg="boto is required")
+    if not HAS_BOTO:
+        module.fail_json(msg='boto required for this module')
 
     ec2 = ec2_connect(module)
 

cloud/amazon/ec2_elb.py

@@ -99,17 +99,16 @@ post_tasks:
 """
 
 import time
-import sys
-import os
 
 try:
     import boto
     import boto.ec2
     import boto.ec2.elb
     from boto.regioninfo import RegionInfo
+    HAS_BOTO = True
 except ImportError:
-    print "failed=True msg='boto required for this module'"
-    sys.exit(1)
+    HAS_BOTO = False
+
 
 class ElbManager:
     """Handles EC2 instance ELB registration and de-registration"""
@@ -299,6 +298,9 @@ def main():
         argument_spec=argument_spec,
     )
 
+    if not HAS_BOTO:
+        module.fail_json(msg='boto required for this module')
+
     region, ec2_url, aws_connect_params = get_aws_connection_info(module)
 
     if not region: 

cloud/amazon/ec2_elb_lb.py

@@ -240,18 +240,15 @@ EXAMPLES = """
         instance_port: 80
 """
 
-import sys
-import os
-
 try:
     import boto
     import boto.ec2.elb
     import boto.ec2.elb.attributes
     from boto.ec2.elb.healthcheck import HealthCheck
     from boto.regioninfo import RegionInfo
+    HAS_BOTO = True
 except ImportError:
-    print "failed=True msg='boto required for this module'"
-    sys.exit(1)
+    HAS_BOTO = False
 
 
 class ElbManager(object):
@@ -652,6 +649,9 @@ def main():
         argument_spec=argument_spec,
     )
 
+    if not HAS_BOTO:
+        module.fail_json(msg='boto required for this module')
+
     region, ec2_url, aws_connect_params = get_aws_connection_info(module)
     if not region:
         module.fail_json(msg="Region must be specified as a parameter, in EC2_REGION or AWS_REGION environment variables or in boto configuration file")

cloud/amazon/ec2_group.py

@@ -113,9 +113,9 @@ EXAMPLES = '''
 
 try:
     import boto.ec2
+    HAS_BOTO = True
 except ImportError:
-    print "failed=True msg='boto required for this module'"
-    sys.exit(1)
+    HAS_BOTO = False
 
 
 def make_rule_key(prefix, rule, group_id, cidr_ip):
@@ -202,6 +202,9 @@ def main():
         supports_check_mode=True,
     )
 
+    if not HAS_BOTO:
+        module.fail_json(msg='boto required for this module')
+
     name = module.params['name']
     description = module.params['description']
     vpc_id = module.params['vpc_id']

cloud/amazon/ec2_key.py

@@ -84,9 +84,9 @@ EXAMPLES = '''
 
 try:
     import boto.ec2
+    HAS_BOTO = True
 except ImportError:
-    print "failed=True msg='boto required for this module'"
-    sys.exit(1)
+    HAS_BOTO = False
 
 import random
 import string
@@ -107,6 +107,9 @@ def main():
         supports_check_mode=True,
     )
 
+    if not HAS_BOTO:
+        module.fail_json(msg='boto required for this module')
+
     name = module.params['name']
     state = module.params.get('state')
     key_material = module.params.get('key_material')

cloud/amazon/ec2_lc.py

@@ -129,9 +129,6 @@ EXAMPLES = '''
 
 '''
 
-import sys
-import time
-
 from ansible.module_utils.basic import *
 from ansible.module_utils.ec2 import *
 
@@ -140,9 +137,9 @@ try:
     import boto.ec2.autoscale
     from boto.ec2.autoscale import LaunchConfiguration
     from boto.exception import BotoServerError
+    HAS_BOTO = True
 except ImportError:
-    print "failed=True msg='boto required for this module'"
-    sys.exit(1)
+    HAS_BOTO = False
 
 
 def create_block_device(module, volume):
@@ -260,6 +257,9 @@ def main():
 
     module = AnsibleModule(argument_spec=argument_spec)
 
+    if not HAS_BOTO:
+        module.fail_json(msg='boto required for this module')
+
     region, ec2_url, aws_connect_params = get_aws_connection_info(module)
 
     try:

cloud/amazon/ec2_metric_alarm.py

@@ -122,9 +122,9 @@ try:
     import boto.ec2.cloudwatch
     from boto.ec2.cloudwatch import CloudWatchConnection, MetricAlarm
     from boto.exception import BotoServerError
+    HAS_BOTO = True
 except ImportError:
-    print "failed=True msg='boto required for this module'"
-    sys.exit(1)
+    HAS_BOTO = False
 
 
 def create_metric_alarm(connection, module):
@@ -266,6 +266,9 @@ def main():
 
     module = AnsibleModule(argument_spec=argument_spec)
 
+    if not HAS_BOTO:
+        module.fail_json(msg='boto required for this module')
+
     state = module.params.get('state')
 
     region, ec2_url, aws_connect_params = get_aws_connection_info(module)

cloud/amazon/ec2_scaling_policy.py

@@ -55,8 +55,6 @@ EXAMPLES = '''
 '''
 
 
-import sys
-
 from ansible.module_utils.basic import *
 from ansible.module_utils.ec2 import *
 
@@ -64,10 +62,9 @@ try:
     import boto.ec2.autoscale
     from boto.ec2.autoscale import ScalingPolicy
     from boto.exception import BotoServerError
-
+    HAS_BOTO = True
 except ImportError:
-    print "failed=True msg='boto required for this module'"
-    sys.exit(1)
+    HAS_BOTO = False
 
 
 def create_scaling_policy(connection, module):
@@ -157,6 +154,9 @@ def main():
 
     module = AnsibleModule(argument_spec=argument_spec)
 
+    if not HAS_BOTO:
+        module.fail_json(msg='boto required for this module')
+
     region, ec2_url, aws_connect_params = get_aws_connection_info(module)
 
     state = module.params.get('state')

cloud/amazon/ec2_snapshot.py

@@ -106,14 +106,14 @@ EXAMPLES = '''
     state: absent
 '''    
 
-import sys
 import time
 
 try:
     import boto.ec2
+    HAS_BOTO = True
 except ImportError:
-    print "failed=True msg='boto required for this module'"
-    sys.exit(1)
+    HAS_BOTO = False
+
 
 def main():
     argument_spec = ec2_argument_spec()
@@ -132,6 +132,9 @@ def main():
     )
     module = AnsibleModule(argument_spec=argument_spec)
 
+    if not HAS_BOTO:
+        module.fail_json(msg='boto required for this module')
+
     volume_id = module.params.get('volume_id')
     snapshot_id = module.params.get('snapshot_id')
     description = module.params.get('description')

cloud/amazon/ec2_tag.py

@@ -72,13 +72,13 @@ tasks:
 '''
 
 import sys
-import time
 
 try:
     import boto.ec2
+    HAS_BOTO = True
 except ImportError:
-    print "failed=True msg='boto required for this module'"
-    sys.exit(1)
+    HAS_BOTO = False
+
 
 def main():
     argument_spec = ec2_argument_spec()
@@ -90,6 +90,9 @@ def main():
     )
     module = AnsibleModule(argument_spec=argument_spec)
 
+    if not HAS_BOTO:
+        module.fail_json(msg='boto required for this module')
+
     resource = module.params.get('resource')
     tags = module.params.get('tags')
     state = module.params.get('state')

cloud/amazon/ec2_vol.py

@@ -186,16 +186,16 @@ EXAMPLES = '''
     device_name: /dev/xvdf
 '''
 
-import sys
 import time
 
 from distutils.version import LooseVersion
 
 try:
     import boto.ec2
+    HAS_BOTO = True
 except ImportError:
-    print "failed=True msg='boto required for this module'"
-    sys.exit(1)
+    HAS_BOTO = False
+
 
 def get_volume(module, ec2):
     name = module.params.get('name')
@@ -364,6 +364,9 @@ def main():
     )
     module = AnsibleModule(argument_spec=argument_spec)
 
+    if not HAS_BOTO:
+        module.fail_json(msg='boto required for this module')
+
     id = module.params.get('id')
     name = module.params.get('name')
     instance = module.params.get('instance')

cloud/amazon/ec2_vpc.py

@@ -156,16 +156,17 @@ the delete will fail until those dependencies are removed.
 '''
 
 
-import sys
 import time
 
 try:
     import boto.ec2
     import boto.vpc
     from boto.exception import EC2ResponseError
+
+    HAS_BOTO = True
 except ImportError:
-    print "failed=True msg='boto required for this module'"
-    sys.exit(1)
+    HAS_BOTO = False
+
 
 def get_vpc_info(vpc):
     """
@@ -576,6 +577,9 @@ def main():
         argument_spec=argument_spec,
     )
 
+    if not HAS_BOTO:
+        module.fail_json(msg='boto required for this module')
+
     state = module.params.get('state')
 
     region, ec2_url, aws_connect_kwargs = get_aws_connection_info(module)

cloud/amazon/elasticache.py

@@ -131,16 +131,15 @@ EXAMPLES = """
 """
 
 import sys
-import os
 import time
 
 try:
     import boto
     from boto.elasticache.layer1 import ElastiCacheConnection
     from boto.regioninfo import RegionInfo
+    HAS_BOTO = True
 except ImportError:
-    print "failed=True msg='boto required for this module'"
-    sys.exit(1)
+    HAS_BOTO = False
 
 
 class ElastiCacheManager(object):
@@ -497,6 +496,9 @@ def main():
         argument_spec=argument_spec,
     )
 
+    if not HAS_BOTO:
+        module.fail_json(msg='boto required for this module')
+
     region, ec2_url, aws_connect_kwargs = get_aws_connection_info(module)
 
     name = module.params['name']

cloud/amazon/rds.py

@@ -294,9 +294,9 @@ import time
 
 try:
     import boto.rds
+    HAS_BOTO = True
 except ImportError:
-    print "failed=True msg='boto required for this module'"
-    sys.exit(1)
+    HAS_BOTO = False
 
 try:
     import boto.rds2
@@ -984,6 +984,10 @@ def main():
     module = AnsibleModule(
         argument_spec=argument_spec,
     )
+
+    if not HAS_BOTO:
+        module.fail_json(msg='boto required for this module')
+
     invocations = {
             'create': create_db_instance,
             'replicate': replicate_db_instance,

cloud/amazon/rds_param_group.py

@@ -87,9 +87,6 @@ EXAMPLES = '''
       name: norwegian_blue
 '''
 
-import sys
-import time
-
 VALID_ENGINES = [
     'mysql5.1',
     'mysql5.5',
@@ -112,9 +109,10 @@ VALID_ENGINES = [
 try:
     import boto.rds
     from boto.exception import BotoServerError
+    HAS_BOTO = True
 except ImportError:
-    print "failed=True msg='boto required for this module'"
-    sys.exit(1)
+    HAS_BOTO = False
+
 
 # returns a tuple: (whether or not a parameter was changed, the remaining parameters that weren't found in this parameter group)
 
@@ -220,6 +218,9 @@ def main():
     )
     module = AnsibleModule(argument_spec=argument_spec)
 
+    if not HAS_BOTO:
+        module.fail_json(msg='boto required for this module')
+
     state                   = module.params.get('state')
     group_name              = module.params.get('name').lower()
     group_engine            = module.params.get('engine')

cloud/amazon/rds_subnet_group.py

@@ -73,15 +73,13 @@ EXAMPLES = '''
     name: norwegian-blue
 '''
 
-import sys
-import time
-
 try:
     import boto.rds
     from boto.exception import BotoServerError
+    HAS_BOTO = True
 except ImportError:
-    print "failed=True msg='boto required for this module'"
-    sys.exit(1)
+    HAS_BOTO = False
+
 
 def main():
     argument_spec = ec2_argument_spec()
@@ -94,6 +92,9 @@ def main():
     )
     module = AnsibleModule(argument_spec=argument_spec)
 
+    if not HAS_BOTO:
+        module.fail_json(msg='boto required for this module')
+
     state                   = module.params.get('state')
     group_name              = module.params.get('name').lower()
     group_description       = module.params.get('description')

cloud/amazon/route53.py

@@ -159,7 +159,6 @@ EXAMPLES = '''
 
 '''
 
-import sys
 import time
 
 try:
@@ -168,9 +167,10 @@ try:
     from boto import route53
     from boto.route53 import Route53Connection
     from boto.route53.record import ResourceRecordSets
+    HAS_BOTO = True
 except ImportError:
-    print "failed=True msg='boto required for this module'"
-    sys.exit(1)
+    HAS_BOTO = False
+
 
 def commit(changes, retry_interval):
     """Commit changes, but retry PriorRequestNotComplete errors."""
@@ -204,6 +204,9 @@ def main():
     )
     module = AnsibleModule(argument_spec=argument_spec)
 
+    if not HAS_BOTO:
+        module.fail_json(msg='boto required for this module')
+
     command_in              = module.params.get('command')
     zone_in                 = module.params.get('zone').lower()
     ttl_in                  = module.params.get('ttl')

cloud/amazon/s3.py

@@ -107,20 +107,19 @@ EXAMPLES = '''
 - s3: bucket=mybucket mode=delete
 '''
 
-import sys
 import os
 import urlparse
 import hashlib
 
-from boto.s3.connection import OrdinaryCallingFormat
-
 try:
     import boto
     from boto.s3.connection import Location
+    from boto.s3.connection import OrdinaryCallingFormat
     from boto.s3.connection import S3Connection
+    HAS_BOTO = True
 except ImportError:
-    print "failed=True msg='boto required for this module'"
-    sys.exit(1)
+    HAS_BOTO = False
+
 
 def key_check(module, s3, bucket, obj):
     try:
@@ -278,6 +277,9 @@ def main():
     )
     module = AnsibleModule(argument_spec=argument_spec)
 
+    if not HAS_BOTO:
+        module.fail_json(msg='boto required for this module')
+
     bucket = module.params.get('bucket')
     obj = module.params.get('object')
     src = module.params.get('src')