How to use lambda_layer_arn method in localstack

Best Python code snippet using localstack_python

core_aws_lambda.py

Source:core_aws_lambda.py

1from urllib.parse import urlparse2import boto33from botocore.exceptions import ClientError45from awsdest.utils.core_aws import *67def _isthere__s3_bucketfolder_notification_config(awsconfig, s3folder):8    parsed = urlparse(s3folder, allow_fragments=False)9    bucketin = parsed.netloc10    s3folder_prefix = parsed.path.lstrip('/')11    try:12        s3_client = boto3.client('s3', aws_access_key_id=awsconfig['aws_access_key_id'],13                                 aws_secret_access_key=awsconfig['aws_secret_access_key'])14        response = s3_client.get_bucket_notification_configuration(Bucket=bucketin)1516        if 'LambdaFunctionConfigurations' in response or \17                'TopicConfigurations' in response or \18                'QueueConfigurations' in response :19            # print("This bucket does event config set"20            return True2122        return False2324        # following will never be executed by design. Since we want to aboid creating event notifications if there is some on bucket already.25        # our process wipes out previos configurations.26        lambdaFuncConfigs_list = response['LambdaFunctionConfigurations']27        for lc in lambdaFuncConfigs_list:28            lc1 = lc['Filter']['Key']['FilterRules']29            for lc2 in lc1:30                if lc2['Name'] == "Prefix" and str.rstrip(lc2['Value'], "/") == str.rstrip(s3folder_prefix,"/"):  # if folder prefix matches then there is a notification on that folder prefix31                    print("This s3bucket:/folder has lambda functon configuration already:", lc)32                    return True3334    except ClientError as e:35        print("Error getting s3_event_configuration " % e)36        return Null373839def validate_lambda_folders(awsconfig, s3folderin_lambda, s3folderout_lambda):40    if number_of_files_s3folder(awsconfig, s3folderin_lambda) < 0:41        print("S3 input folder non existent.")42        return False4344    if number_of_files_s3folder(awsconfig, s3folderout_lambda) < 0:45        print("S3 output folder non existent.")46        return False4748    # check if input and output folder as same. We do not want events/triggers that result in an infinite loop of executions49    if str.rstrip(s3folderin_lambda, "/") == str.rstrip(s3folderout_lambda, "/"):50        print(" cannot have input and output folders same to prevent infinite lambda loop triggers")51        return False5253    # check if there are events/lambda defined on this bucket and folder specifically54    # we do not want conflicts. So being extra careful.55    if _isthere__s3_bucketfolder_notification_config(awsconfig, s3folderin_lambda):56        print("Event configuration exists on this bucket. Do not want to create additional configuration:",57              s3folderin_lambda)58        return False5960    if _isthere__s3_bucketfolder_notification_config(awsconfig, s3folderout_lambda):61        print("Event configuration exists on this folder. Do not want to create additional configuration:",62              s3folderout_lambda)63        return False6465    return True666768def create_lambda_layer(awsconfig, lambdaconfig):69    l = open('lambda_layers/lambda_layers_k8s_requests_etc_packages_1.zip', 'rb')70    layer_zipfile = l.read()7172    try:73        lambda_client = boto3.client('lambda', aws_access_key_id=awsconfig['aws_access_key_id'],74                                     aws_secret_access_key=awsconfig['aws_secret_access_key'])75        response = lambda_client.publish_layer_version(LayerName='lambda_scoring_layer',76                        Content={'ZipFile': layer_zipfile77                        },78        )79        lambda_layer_arn  = response['LayerArn']80        lambda_layer_version = response['Version']8182        #layer_arn_ver = 'arn:aws:lambda:us-east-1:617292774228:layer:lambda_scoring_layer:1'83        #response = lambda_client.add_layer_version_permission(84        #    LayerName='lambda_scoring_layer',85        #    VersionNumber='$LATEST',86        #    StatementId='1',87        #    Action='lambda:GetLayerVersion',88        #    Principal='*'89        #)9091        return (lambda_layer_arn, lambda_layer_version)9293    except ClientError as e:94        print("Error creating lambda layer " % e)95        return Null969798def _create_lambda_function(awsconfig, lambdaconfig, k8sconfig, model_imagename, s3folderin_lambda, s3folderout_lambda):99    aws_eks_cluster_name = awsconfig['aws_eks_cluster_name']100    ingress_controller_url = awsconfig['ingress_controller_url']101    aws_region = awsconfig['aws_region']102    k8s_namespace = k8sconfig['k8s_namespace']103104    lambda_execution_role = lambdaconfig['lambda_execution_arn_role']105    lambda_function_name = lambdaconfig['lambda_function_name']106    lambda_layer_arn = lambdaconfig['lambda_layer_arn']107    lambda_layer_version = lambdaconfig['lambda_layer_version']108109    f = open('lambda_function_dependencies/lambdafunc_scoring_dependencies.zip', 'rb')110    function_zipfile = f.read()111112    try:113        lambda_client = boto3.client('lambda', aws_access_key_id=awsconfig['aws_access_key_id'],114                                     aws_secret_access_key=awsconfig['aws_secret_access_key'])115116        lambda_layer_arn_version = lambda_layer_arn + ":" + lambda_layer_version117118        response = lambda_client.create_function(119            FunctionName=lambda_function_name,120            Runtime='python3.7',121            Role=lambda_execution_role,122            Handler='lambdafunc_scoring.scoring_lambda_handler',123            Code={124                'ZipFile': function_zipfile,125            },126            Timeout=899,127            MemorySize=128,128            Environment={129                'Variables': {130                    'fallback_modelname': model_imagename,131                    'fallback_clustername': aws_eks_cluster_name,132                    'fallback_ingress_url' : ingress_controller_url,133                    's3_outputfolder': s3folderout_lambda,134                    'aws_region': aws_region,135                    'k8s_namespace' : k8s_namespace136                }137            },138            Layers=[lambda_layer_arn_version]139        )140        functionArn = response['FunctionArn']141142        response = lambda_client.add_permission(143            FunctionName=functionArn,144            StatementId='1',145            Action='lambda:InvokeFunction',146            Principal='s3.amazonaws.com'147        )148        return functionArn149150    except ClientError as e:151        print("Error creating lambda function " % e)152        return Null153154155def _create_s3bucket_notificationfunc(awsconfig, lambdaconfig, s3folderin_lambda, functionArn):156    parsed = urlparse(s3folderin_lambda, allow_fragments=False)157    bucketin = parsed.netloc158    s3prefix = parsed.path.lstrip('/')159160    lambda_function_name = lambdaconfig['lambda_function_name']161162    try:163        s3_client = boto3.client('s3', aws_access_key_id=awsconfig['aws_access_key_id'],164                                 aws_secret_access_key=awsconfig['aws_secret_access_key'])165        response = s3_client.put_bucket_notification_configuration(166            Bucket=bucketin,167            NotificationConfiguration={168                'LambdaFunctionConfigurations': [169                    {170                        'Id': lambda_function_name,171                        'LambdaFunctionArn': functionArn,172                        'Events': [173                            's3:ObjectCreated:*'174                        ],175                        'Filter': {176                            'Key': {177                                'FilterRules': [178                                    {179                                        'Name': 'prefix', 'Value': s3prefix180                                    },181                                    {182                                        'Name': 'suffix', 'Value': '.csv'183                                    }184                                ]185                            }186                        }187                    }188                ]189            }190        )191        print("Event Notification created on S3 Input bucket that invokes above Lambda Function", bucketin)192    except ClientError as e:193        print("Error creating event notification configuration on s3 bucket " % e)194        return Null195    # except Exception as e:196    #    print(str(e))197    #    raise e198199200def create_lambda_setup(awsconfig,lambdaconfig, k8sconfig, model_imagename, s3folderin_lambda, s3folderout_lambda):201    functionArn = _create_lambda_function(awsconfig, lambdaconfig, k8sconfig, model_imagename, s3folderin_lambda, s3folderout_lambda)202    print("Lambda Function created functionArn:", functionArn)203    _create_s3bucket_notificationfunc(awsconfig, lambdaconfig, s3folderin_lambda, functionArn)204205206######207208def _delete_s3bucket_notificationfunc(awsconfig, s3folderin_lambda):209    parsed = urlparse(s3folderin_lambda, allow_fragments=False)210    bucketin = parsed.netloc211    try:212        # delete by saving an empty notification configuration.213        s3_client = boto3.client('s3', aws_access_key_id=awsconfig['aws_access_key_id'],214                                 aws_secret_access_key=awsconfig['aws_secret_access_key'])215        response = s3_client.put_bucket_notification_configuration(216            Bucket=bucketin,217            NotificationConfiguration={218            }219        )220        print("Deleted ALL Event notification configurations on bucket ", )221    except ClientError as e:222        print("Error creating event notification configuration on s3 bucket " % e)223        return Null224    # except Exception as e:225    #    print(str(e))226    #    raise e227228229def _delete_lambda_function(awsconfig, lambdaconfig):230    lambda_function_name = lambdaconfig['lambda_function_name']231232    try:233        lambda_client = boto3.client('lambda', aws_access_key_id=awsconfig['aws_access_key_id'],234                                     aws_secret_access_key=awsconfig['aws_secret_access_key'])235        response = lambda_client.delete_function(FunctionName=lambda_function_name)236237        # do not delete layer here. see why @ https://stackoverflow.com/questions/60824745/aws-delete-lambda-layer-still-retains-layer-version-history/61103244#61103244238239        return True240241    except ClientError as e:242        print("Error creating lambda function or layer " % e)243        return Null244245246def delete_lambda_setup(awsconfig, lambdaconfig, s3folderin_lambda):247    _delete_s3bucket_notificationfunc(awsconfig,s3folderin_lambda)  # deletes all notifcations. Bad. Restricting to folder prefix is not provided by AWS SDK.
...

arns.py

Source:arns.py

1"""2Functions that will ensure that the ARN is returned if a string is passed.3If it is an object in troposphere, it will return GetAtt(obj, 'Arn') or Ref() depending on4what the object supports for return.5If it is a string, it must either comply to the last part of a ARN or be a full ARN6and match the ARN pattern7"""8import re9from troposphere import (10    AWS_REGION,11    AWS_ACCOUNT_ID12)13from troposphere import (14    ImportValue,15    Parameter,16    GetAtt,17    Sub,18    Ref19)20from troposphere.iam import (21    Role22)23from troposphere.s3 import Bucket24from troposphere.awslambda import Function25from troposphere.kms import (26    Key, Alias27)28from ozone.filters.regexes import (29    S3_ARN_PREFIX, S3_NAME, S3_ARN,30    IAM_ROLE_NAME, IAM_ROLE_ARN,31    LAMBDA_NAME, LAMBDA_ARN,32    LAMBDA_LAYER_VERSION, LAMBDA_LAYER_ARN,33    KMS_KEY_ARN, KMS_KEY_ID,34    KMS_ALIAS, KMS_ALIAS_ARN35)36def s3_bucket(bucket, any_object=False):37    """38    Args:39        bucket: represents the bucket object, or a function40    Returns:41        untouched if one of the functions supported42        string of the full ARN if the bucket name is given43        full ARN if full ARN is given and match S3 bucket ARN pattern44    """45    arn_pat = re.compile(S3_ARN)46    name_pat = re.compile(S3_NAME)47    if isinstance(bucket, (ImportValue, GetAtt, Sub, Ref)):48        return bucket49    elif isinstance(bucket, Parameter):50        if any_object:51            return Sub('arn:aws:s3:::{bucket}/*')52        else:53            return Sub('arn:aws:s3:::{bucket}')54    elif isinstance(bucket, Bucket):55        return GetAtt(bucket, 'Arn')56    elif isinstance(bucket, str):57        if arn_pat.match(bucket):58            return bucket59        elif name_pat.match(bucket):60            if any_object:61                return f'{S3_ARN_PREFIX}{bucket}/*'62            else:63                return f'{S3_ARN_PREFIX}{bucket}'64        else:65            raise ValueError('The S3 ARN must follow', S3_ARN)66    else:67        raise ValueError(68            'The S3 ARN must be computed with a function or follow the pattern',69            S3_ARN70        )71def iam_role(role):72    """73    Args:74        role: represents the role object, or a function75    Returns:76        untouched if one of the functions supported77        string of the full ARN if the role name is given78        full ARN if full ARN is given and match IAM role ARN pattern79    """80    arn_pattern = re.compile(IAM_ROLE_ARN)81    name_pattern = re.compile(IAM_ROLE_NAME)82    if isinstance(role, str):83        if name_pattern.match(role):84            role_arn = Sub(f'arn:aws:iam::${{AWS::AccountId}}:role/{role}')85        elif role.startswith('arn:aws:iam::') and arn_pattern.match(role):86            role_arn = role87        else:88            raise ValueError(89                'Role ARN must follow either the name or full arn patterns',90                IAM_ROLE_NAME,91                IAM_ROLE_ARN92            )93    elif isinstance(role, (Parameter, Role)):94        role_arn = GetAtt(role, 'Arn')95    elif isinstance(role, (GetAtt, Sub, Ref, ImportValue)):96        role_arn = role97    else:98        raise TypeError('role expected to be of type', str, ImportValue, Role, Sub, GetAtt, Ref)99    return role_arn100def lambda_function(function):101    """102    Args:103        function: represents the function object, or a function104    Returns:105        untouched if one of the functions supported106        string of the full ARN if the function name is given107        full ARN if full ARN is given and match function ARN pattern108    """109    arn_pattern = re.compile(LAMBDA_ARN)110    name_pattern = re.compile(LAMBDA_NAME)111    if isinstance(function, str):112        if name_pattern.match(function):113            function_arn = Sub(f'arn:aws:lambda:${{AWS::Region}}:${{AWS::AccountId}}:function:{function}')114        elif function.startswith('arn:aws:lambda:') and arn_pattern.match(function):115            function_arn = function116        else:117            raise ValueError(118                'Function ARN must follow either the name or full arn patterns',119                LAMBDA_NAME,120                LAMBDA_ARN121            )122    elif isinstance(function, (Parameter, Function)):123        function_arn = GetAtt(function, 'Arn')124    elif isinstance(function, (ImportValue, GetAtt, Sub, Ref)):125        function_arn = function126    else:127        raise TypeError('Function expected to be of type', str, Role, Sub, GetAtt, Ref, ImportValue)128    return function_arn129def lambda_layer(layer):130    """131    Args:132        layer: represents the layer object, or a function133    Returns:134        untouched if one of the functions supported135        string of the full ARN if the layer name is given136        full ARN if full ARN is given and match Lambda layer ARN pattern137    """138    arn_pattern = re.compile(LAMBDA_LAYER_ARN)139    version_pattern = re.compile(LAMBDA_LAYER_VERSION)140    if isinstance(layer, (GetAtt, Ref, Sub, ImportValue)):141        return layer142    elif isinstance(layer, str):143        if arn_pattern.match(layer):144            return layer145        elif version_pattern.match(layer):146            return Sub(f'arn:aws:lambda:${{AWS::Region}}:${{AWS::AccountId}}:layer:{layer}')147        else:148            raise ValueError(149                "Layer ARN expected of format"150                f"{LAMBDA_LAYER_ARN} or {LAMBDA_LAYER_VERSION}"151            )152    else:153        raise ValueError(154            'Layer does not comply to any required patterns of Functions'155        )156def kms_key(key):157    """158    Args:159        key: represents the key object, or a function160    Returns:161        untouched if one of the functions supported162        string of the full ARN if the key name is given163        full ARN if full ARN is given and match KMS key ARN pattern164    """165    arn_pattern = re.compile(KMS_KEY_ARN)166    id_pattern = re.compile(KMS_KEY_ID)167    if isinstance(key, (Ref, Sub, ImportValue, GetAtt)):168        return key169    if isinstance(key, (Parameter, Key)):170        return GetAtt(key, 'Arn')171    if isinstance(key, str):172        if arn_pattern.match(key):173            return key174        if id_pattern.match(key):175            return Sub(f'arn:aws:kms:${{AWS::Region}}:${{AWS::AccountId}}:key/{key}')176    else:177        raise ValueError('Key does not match pattern', KMS_KEY_ARN, KMS_KEY_ID)178def kms_alias(alias):179    """180    Args:181        alias: represents the alias object, or a function182    Returns:183        untouched if one of the functions supported184        string of the full ARN if the alias name is given185        full ARN if full ARN is given and match KMS Key alias ARN pattern186    """187    arn_pattern = re.compile(KMS_ALIAS_ARN)188    alias_pattern = re.compile(KMS_ALIAS)189    if isinstance(alias, (Ref, Sub, ImportValue, GetAtt)):190        return alias191    if isinstance(alias, (Parameter, Alias)):192        return GetAtt(alias, 'Arn')193    if isinstance(alias, str):194        if arn_pattern.match(alias):195            return alias196        if alias_pattern.match(alias):197            return Sub(f'arn:aws:kms:${{AWS::Region}}:${{AWS::AccountId}}:{alias}')198    else:...

setup_lambda_scoring_layer.py

Source:setup_lambda_scoring_layer.py

12__version__ = '1.0'34import pkgutil5import boto367from awsdest.utils.core_aws import *8from awsdest.utils.core_aws_lambda import *91011if __name__ == '__main__':1213    awsconfig, k8sconfig, siteconfig, lambdaconfig = init_config()14    #print("awsconfig", awsconfig)15    #print("k8sconfig", k8sconfig)16    #print("site-specific: ", siteconfig)17    print("lambda-specific", lambdaconfig)18    print("#################")1920    lambda_layer_arn, lambda_layer_version = create_lambda_layer(awsconfig, lambdaconfig)2122    print("Lambda Layer ARN: ", lambda_layer_arn)23    print("Lambda Layer Version: ", lambda_layer_version)24    print("Above values needs to go config.properties so they can be picked by setup_lambda_scoring")25
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