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How to use describe_stream method in localstack

Best Python code snippet using localstack_python

aws_dynamodbstreams_info.py

Source:aws_dynamodbstreams_info.py

...131                return client.list_streams(132                    TableName=module.params['name'],133                ), False134        elif module.params['describe_stream']:135            return client.describe_stream(136                StreamArn=module.params['stream_arn'],137            ), False138        elif module.params['get_shard_iterator']:139            return client.describe_stream(140                StreamArn=module.params['stream_arn'],141                ShardId=module.params['shard_id'],142                ShardIteratorType=module.params['shard_iterator_type'],143                SequenceNumber=module.params['sequence_number'],144            ), False145        elif module.params['get_records']:146            if client.can_paginate('get_records'):147                paginator = client.get_paginator('get_records')148                return paginator.paginate(149                    ShardIterator=module.params['shard_iterator'],150                ), True151            else:152                return client.get_records(153                    ShardIterator=module.params['shard_iterator'],...

kinesis_lab.py

Source:kinesis_lab.py

...5cli_ken = session.client("kinesis")6def create_stream(name,shards):7    res_create_stream = cli_ken.create_stream(StreamName=name, ShardCount = shards)8    return res_create_stream9def describe_stream(stream_name):10    res_desc_stream = cli_ken.describe_stream(StreamName=stream_name)11    return res_desc_stream12def list_stream(limit):13    res_list_stream = cli_ken.list_streams(Limit = limit)14    return res_list_stream15def get_kinesis_shards(stream_name, shard_id):16    res_shard_iter = cli_ken.get_shard_iterator(StreamName = stream_name, ShardId = shard_id, ShardIteratorType = 'LATEST')17    return res_shard_iter18def list_shards(stream_name):19    res_shard_lst = cli_ken.list_shards(StreamName = stream_name)20    lst_shards = [shard_id['ShardId'] for shard_id in res_shard_lst['Shards']]     21    return lst_shards22def get_record(shard_key):23    res_get_rec =  cli_ken.get_records(ShardIterator = shard_key, Limit = 10)24    return res_get_rec['Records']25def put_record(stream_name, data, key):26    res_put_rec = cli_ken.put_record(StreamName = stream_name, Data = data, PartitionKey = key)27    print ("Results from PUT: ShardId = {} and Sequence Number = {}".format (res_put_rec ['ShardId'], res_put_rec['SequenceNumber']))28    return [res_put_rec ['ShardId'], res_put_rec['SequenceNumber']]29    30def del_stream(stream_name):31    res_stream_del =cli_ken.delete_stream(StreamName=stream_name)32    return res_stream_del33if __name__ == '__main__':34    35    found=False36    stream_name = "Aji_Stream"37    shards = 138    #Create a stream   39    create_stream(stream_name,shards)    40    #Descrive a stream to get the Stream Status41    stream_status = describe_stream(stream_name)['StreamDescription'] ['StreamStatus']42    #Loop in till the stream is active43    while stream_status != "ACTIVE":44        print("Waiting for the stream to be active....")45        t.sleep(10)46        if describe_stream(stream_name)['StreamDescription'] ['StreamStatus'] == "ACTIVE":47            found=True48            break49    #If the Stream is Active.. Get the Shard ID50    if found==True:        51        shard_id  = describe_stream(stream_name)['StreamDescription'] ['Shards'][0]['ShardId']52    #If it gets a Shard ID.. Create the Shard Iterator53    if shard_id != "":    54        shard_key = get_kinesis_shards(stream_name, shard_id)['ShardIterator']55    56    #If the Get Data returns null.. Input a record to the stream    57    if len(get_record(shard_key)) == 0:58        shard_seq = put_record(stream_name,"Aji_Test_Data", "1")59    60    #Get the result of the data put inside the stream in the earlier command        61    if len(get_record(shard_key)) != 0:            62        result = [str(val['Data']) for val in get_record(shard_key)]63        print(result)64    # Delete the Stream        65    del_stream(stream_name)    66  67    #Verify whether the stream is deleated.68    stream_status = describe_stream(stream_name)['StreamDescription'] ['StreamStatus']        69    while stream_status != 'ACTIVE':70        try:71            print("Waiting for the stream to be deleted....")72            t.sleep(10)         73            stream_status = describe_stream(stream_name)['StreamDescription'] ['StreamStatus']74            if stream_status != 'DELETING':            75                break76        except ResourceNotFoundException:77            print("Stream Deleted.....")...

kinesis_utils.py

Source:kinesis_utils.py

...17    def __init__(self, stream_name, region='us-east-2'):18        self.stream_name         = stream_name19        self.region              = region20        self.kinesis_conn        = kinesis.connect_to_region(region)    # Connect to a Kinesis stream in a specific region21        self.description         = self.kinesis_conn.describe_stream(stream)22        self.shards              = self.get_shards()23        self.first_shard_id      = self.shards[0]["ShardId"]24        self.partition_key       = 025        26    def get_shards(self, description):27        """28        Parse shard information29        """30        return self.description['StreamDescription']['Shards']31    def get_partition_key(self):32        """33        Gets an increments the partition key34        """35        self.partition_key += 136        if self.partition_key >= len(self.shards):37            self.partition_key = 038            39        return self.partiton_key40        41    def put_record(self, record):42        """43        Put a record (<=1MB) on to a Kinesis stream44        """45        kinesis.put_record(self.stream_name, json.dumps(record), self.get_partition_key())46    def put_records(self, records):47        """48        Put records on to a Kinesis stream49        """50        data = []51        for record in records:52            data.append( { 'Data': json.dumps(record), 'PartitionKey': self.get_partition_key() } )53            54        kinesis.put_records(data, self.stream_name)55        56    def records_iterator(self, limit=100):57        """58        Read the latest batch of records from a Kinesis stream59        """60        shard_it = kinesis.get_shard_iterator(self.stream_name, self.first_shard_id, "LATEST")["ShardIterator"]61        while True:62            t0 = time.time()63            out = kinesis.get_records(shard_it, limit=limit)64            shard_it = out["NextShardIterator"]65            yield out66            67            t1 = time.time()68            if t1 - t0 < 0.2:69                time.sleep(0.2 - (t1 - t0))70        71################################################################################72# MAIN73if __name__ == '__main__':74    parser = argparser({'desc': "Helper functions for AWS Kinesis: kinesis_utils.py"})75    parser.add_argument('--describe_stream', help='Describe a specific Kinesis stream', required=False, type=str)76    args = parser.parse_args()   # Get inputs and options77    if args.describe_stream:78        describe_stream(args.describe_stream)79        80        ...

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