How to use switch_region method in localstack

Best Python code snippet using localstack_python

test_generic_proxy.py

Source:test_generic_proxy.py

...149@pytest.mark.parametrize("encoding", [byte_encoding, string_encoding])150def test_arn_partition_rewriting_in_response_without_region_and_without_default_region(151    encoding, switch_region152):153    with switch_region(None):154        listener = ArnPartitionRewriteListener()155        response = Response()156        response._content = encoding(157            json.dumps({"some-data-with-arn": "arn:aws-us-gov:iam::123456789012:ArnInData"})158        )159        response._status_code = 200160        response.headers = {"some-header-with-arn": "arn:aws-us-gov:iam::123456789012:ArnInHeader"}161        result = listener.return_response(162            method="POST", path="/", data="ignored", headers={}, response=response163        )164        assert result.status_code == response.status_code165        assert result.headers == {"some-header-with-arn": "arn:aws:iam::123456789012:ArnInHeader"}166        assert result.content == encoding(167            json.dumps({"some-data-with-arn": "arn:aws:iam::123456789012:ArnInData"})168        )169@pytest.mark.parametrize("encoding", [byte_encoding, string_encoding])170def test_arn_partition_rewriting_in_response_without_region_and_with_default_region(171    encoding, switch_region172):173    with switch_region("us-gov-east-1"):174        listener = ArnPartitionRewriteListener()175        response = Response()176        response._content = encoding(177            json.dumps({"some-data-with-arn": "arn:aws:iam::123456789012:ArnInData"})178        )179        response._status_code = 200180        response.headers = {"some-header-with-arn": "arn:aws:iam::123456789012:ArnInHeader"}181        result = listener.return_response(182            method="POST", path="/", data="ignored", headers={}, response=response183        )184        assert result.status_code == response.status_code185        assert result.headers == {186            "some-header-with-arn": "arn:aws-us-gov:iam::123456789012:ArnInHeader"187        }...

Terracheck.py

Source:Terracheck.py

1import boto32from python_terraform import *3import argparse4from botocore.exceptions import ParamValidationError, ClientError5def dynamo_db_backend(region, table, ak, sk):6    dynamodb_client = boto3.client('dynamodb', aws_access_key_id=ak,7                                   aws_secret_access_key=sk, region_name=region)8    # response_dynamo = dynamodb_client.describe_table(TableName="vladitest")9    try:10        create = dynamodb_client.create_table(11            AttributeDefinitions=[12                {13                    'AttributeName': 'LockID',14                    'AttributeType': 'S'15                }16            ],17            KeySchema=[18                {19                    'AttributeName': 'LockID',20                    'KeyType': 'HASH',21                }22            ],23            ProvisionedThroughput={24                'ReadCapacityUnits': 5,25                'WriteCapacityUnits': 5,26            },27            TableName=table,28        )29    except ClientError as e:30        print(e)31def artifact_bucket_creation(region, bucketname):32    s3 = boto3.resource('s3')33    if s3.Bucket(bucketname).creation_date is None:34        print("bucket %s does not exist" % bucketname)35        s32 = boto3.client('s3', region_name=region)36        location = {'LocationConstraint': region}37        s32.create_bucket(Bucket=bucketname, CreateBucketConfiguration=location)38    else:39        print("bucket %s exists" % bucketname)40def s3_backend(region, bucket1, ak, sk):41    client = boto3.client(service_name="s3", region_name=region,42                          aws_access_key_id=ak,43                          aws_secret_access_key=sk)44    location = {'LocationConstraint': region}45    try:46        create_bucket_response = client.create_bucket(Bucket=bucket1, CreateBucketConfiguration=location)47    except ClientError as e:48        print(e)49def dynamichange(filename, replacesrc, replacedst):50    try:51        with open(filename) as f:52            s = f.read()53            if replacesrc not in s:54                print('"{replacesrc}" not found in {filename}.'.format(**locals()))55                return56        # Safely write the changed content, if found in the file57        with open(filename, 'w') as f:58            print('Changing "{replacesrc}" to "{replacedst}" in {filename}'.format(**locals()))59            s = s.replace(replacesrc, replacedst)60            f.write(s)61    except Exception as err:62        print('[inplace_change] Error : "{err}'.format(**locals()))63        exit()64def get_aws_account_id():65    return boto3.client('sts').get_caller_identity().get('Account')66def main():67    parser = argparse.ArgumentParser()68    parser.add_argument('-r', help='region to deploy stack example eu-central-1', required=True)69    parser.add_argument('-ak', help='Access Key - Admin rights for this please ', required=True)70    parser.add_argument('-sk', help='Secret Key - Admin rights for this please', required=True)71    args = parser.parse_args()72    dynamo_db_backend(args.r, "terraform-state-db", args.ak, args.sk)73    s3_backend(args.r, "terrform-state-bucket-test", args.ak, args.sk)74    dynamichange('./envparams.tfvars',75                 "SWITCH_REGION",76                 args.r)77    dynamichange('./envparams.tfvars',78                 "SWITCH_AK",79                 args.ak)80    dynamichange('./envparams.tfvars',81                 "SWITCH_SK",82                 args.sk)83    dynamichange('./variables.tf',84                 "SWITCH_BUCKET",85                 "terrform-state-bucket-test")86    dynamichange('./variables.tf',87                 "SWITCH_KEY",88                 "tfproject-key" + args.r)89    dynamichange('./variables.tf',90                 "SWITCH_REGION",91                 args.r)92    dynamichange('./variables.tf',93                 "SWITCH_DYNAMO",94                 "terraform-state-db")95    try:96        tf = Terraform(97            working_dir='./')98        tf.init()99        tf.apply(var_file='envparams.tfvars', skip_plan=True, no_color=IsFlagged, refresh=True,100                 capture_output=False)101        # tf.destroy(var_file='envparams.tfvars',102        #        # skip_plan=True, no_color=IsFlagged, refresh=True,103        #        capture_output=False, input=False)104    except Exception as err:105        print(err)...

AWS.py

Source:AWS.py

...11        self.api = boto3.resource('ec2', region_name=self.options['region'],12                                  aws_access_key_id=self.options['access'],13                                  aws_secret_access_key=self.options['secret'])14        return self.api15    def switch_region(self, region):16        self.login(region=region)17    18    def get_regions(self, **kwargs):19        if not self.api:20            return None21        regions = self.api.meta.client.describe_regions()22        return regions['Regions']23    24    def get_instances_from_region(self, instanceid=None):25        if not self.api:26            return None27        qfilter = {}28        if instanceid:29            qfilter = {30                'Filters' : [ {'Name': 'instance-id', 'Values': [instanceid]} ],31            }32        try:33            output = []34            for i in self.api.instances.filter(**qfilter):35                name = ''36                for x in i.tags:37                    if x['Key'] == 'Name':38                        name = x['Value']39                        break40                instance = {41                    'name': name,42                    'instance': i.id,43                    'state': i.state['Name'],44                    'type': i.instance_type,45                    'region': i.placement['AvailabilityZone'],46                    'address_private': i.private_ip_address,47                    'address_public': i.public_ip_address,48                    'hypervisor': i.hypervisor,49                    'hypervisor_type': i.virtualization_type,50                }51                output.append(instance)52            return output53        except:54            return []55    def get_instances(self, instanceid=None):56        output = []57        current_region = self.options['region']58        for i in self.get_regions():59            self.switch_region(i['RegionName'])60            output += self.get_instances_from_region(instanceid)61        self.switch_region(current_region)...

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