Sono disponibili altri esempi AWS SDK nel repository [AWS Doc SDK](https://github.com/awsdocs/aws-doc-sdk-examples) Examples. GitHub
Le traduzioni sono generate tramite traduzione automatica. In caso di conflitto tra il contenuto di una traduzione e la versione originale in Inglese, quest'ultima prevarrà.
# Esempi di base per l'utilizzo di Managed Service for Apache Flink AWS SDKs
I seguenti esempi di codice mostrano come utilizzare le nozioni di base di Amazon Managed Service for Apache Flink con. AWS SDKs
**Contents**
+ [Azioni](kinesis-analytics-v2_code_examples_actions.md)
+ [`AddApplicationInput`](kinesis-analytics-v2_example_kinesis-analytics-v2_AddApplicationInput_section.md)
+ [`AddApplicationOutput`](kinesis-analytics-v2_example_kinesis-analytics-v2_AddApplicationOutput_section.md)
+ [`CreateApplication`](kinesis-analytics-v2_example_kinesis-analytics-v2_CreateApplication_section.md)
+ [`DeleteApplication`](kinesis-analytics-v2_example_kinesis-analytics-v2_DeleteApplication_section.md)
+ [`DescribeApplication`](kinesis-analytics-v2_example_kinesis-analytics-v2_DescribeApplication_section.md)
+ [`DescribeApplicationSnapshot`](kinesis-analytics-v2_example_kinesis-analytics-v2_DescribeApplicationSnapshot_section.md)
+ [`DiscoverInputSchema`](kinesis-analytics-v2_example_kinesis-analytics-v2_DiscoverInputSchema_section.md)
+ [`StartApplication`](kinesis-analytics-v2_example_kinesis-analytics-v2_StartApplication_section.md)
+ [`StopApplication`](kinesis-analytics-v2_example_kinesis-analytics-v2_StopApplication_section.md)
+ [`UpdateApplication`](kinesis-analytics-v2_example_kinesis-analytics-v2_UpdateApplication_section.md)
# Azioni per Managed Service for Apache Flink utilizzando AWS SDKs
I seguenti esempi di codice mostrano come eseguire singole azioni di Managed Service for Apache Flink con. AWS SDKs Ogni esempio include un collegamento a GitHub, dove è possibile trovare le istruzioni per la configurazione e l'esecuzione del codice.
Gli esempi seguenti includono solo le azioni più comunemente utilizzate. Per un elenco completo, consulta la [documentazione di riferimento dell’API Servizio gestito da Amazon per Apache Flink](https://docs.aws.amazon.com/managed-flink/latest/apiv2/Welcome.html).
**Topics**
+ [`AddApplicationInput`](kinesis-analytics-v2_example_kinesis-analytics-v2_AddApplicationInput_section.md)
+ [`AddApplicationOutput`](kinesis-analytics-v2_example_kinesis-analytics-v2_AddApplicationOutput_section.md)
+ [`CreateApplication`](kinesis-analytics-v2_example_kinesis-analytics-v2_CreateApplication_section.md)
+ [`DeleteApplication`](kinesis-analytics-v2_example_kinesis-analytics-v2_DeleteApplication_section.md)
+ [`DescribeApplication`](kinesis-analytics-v2_example_kinesis-analytics-v2_DescribeApplication_section.md)
+ [`DescribeApplicationSnapshot`](kinesis-analytics-v2_example_kinesis-analytics-v2_DescribeApplicationSnapshot_section.md)
+ [`DiscoverInputSchema`](kinesis-analytics-v2_example_kinesis-analytics-v2_DiscoverInputSchema_section.md)
+ [`StartApplication`](kinesis-analytics-v2_example_kinesis-analytics-v2_StartApplication_section.md)
+ [`StopApplication`](kinesis-analytics-v2_example_kinesis-analytics-v2_StopApplication_section.md)
+ [`UpdateApplication`](kinesis-analytics-v2_example_kinesis-analytics-v2_UpdateApplication_section.md)
# Utilizzalo `AddApplicationInput` con un AWS SDK
Il seguente esempio di codice mostra come utilizzare`AddApplicationInput`.
------
#### [ Python ]
**SDK per Python (Boto3)**
C'è altro da fare GitHub. Trova l'esempio completo e scopri di più sulla configurazione e l'esecuzione nel [Repository di esempi di codice AWS](https://github.com/awsdocs/aws-doc-sdk-examples/tree/main/python/example_code/kinesis-analytics-v2#code-examples).
```
class KinesisAnalyticsApplicationV2:
"""Encapsulates Kinesis Data Analytics application functions."""
def __init__(self, analytics_client):
"""
:param analytics_client: A Boto3 Kinesis Data Analytics v2 client.
"""
self.analytics_client = analytics_client
self.name = None
self.arn = None
self.version_id = None
self.create_timestamp = None
def add_input(self, input_prefix, stream_arn, input_schema):
"""
Adds an input stream to the application. The input stream data is mapped
to an in-application stream that can be processed by your code running in
Kinesis Data Analytics.
:param input_prefix: The prefix prepended to in-application input stream names.
:param stream_arn: The ARN of the input stream.
:param input_schema: A schema that maps the data in the input stream to the
runtime environment. This can be automatically generated
by using `discover_input_schema` or you can create it
yourself.
:return: Metadata about the newly added input.
"""
try:
response = self.analytics_client.add_application_input(
ApplicationName=self.name,
CurrentApplicationVersionId=self.version_id,
Input={
"NamePrefix": input_prefix,
"KinesisStreamsInput": {"ResourceARN": stream_arn},
"InputSchema": input_schema,
},
)
self.version_id = response["ApplicationVersionId"]
logger.info("Add input stream %s to application %s.", stream_arn, self.name)
except ClientError:
logger.exception(
"Couldn't add input stream %s to application %s.", stream_arn, self.name
)
raise
else:
return response
```
+ Per i dettagli sull'API, consulta [AddApplicationInput AWS](https://docs.aws.amazon.com/goto/boto3/kinesisanalyticsv2-2018-05-23/AddApplicationInput)*SDK for Python (Boto3) API Reference*.
------
# Utilizzare con un SDK `AddApplicationOutput` AWS
Il seguente esempio di codice mostra come utilizzare`AddApplicationOutput`.
------
#### [ Python ]
**SDK per Python (Boto3)**
C'è altro da fare GitHub. Trova l'esempio completo e scopri di più sulla configurazione e l'esecuzione nel [Repository di esempi di codice AWS](https://github.com/awsdocs/aws-doc-sdk-examples/tree/main/python/example_code/kinesis-analytics-v2#code-examples).
```
class KinesisAnalyticsApplicationV2:
"""Encapsulates Kinesis Data Analytics application functions."""
def __init__(self, analytics_client):
"""
:param analytics_client: A Boto3 Kinesis Data Analytics v2 client.
"""
self.analytics_client = analytics_client
self.name = None
self.arn = None
self.version_id = None
self.create_timestamp = None
def add_output(self, in_app_stream_name, output_arn):
"""
Adds an output stream to the application. Kinesis Data Analytics maps data
from the specified in-application stream to the output stream.
:param in_app_stream_name: The name of the in-application stream to map
to the output stream.
:param output_arn: The ARN of the output stream.
:return: A list of metadata about the output resources currently assigned
to the application.
"""
try:
response = self.analytics_client.add_application_output(
ApplicationName=self.name,
CurrentApplicationVersionId=self.version_id,
Output={
"Name": in_app_stream_name,
"KinesisStreamsOutput": {"ResourceARN": output_arn},
"DestinationSchema": {"RecordFormatType": "JSON"},
},
)
outputs = response["OutputDescriptions"]
self.version_id = response["ApplicationVersionId"]
logging.info(
"Added output %s to %s, which now has %s outputs.",
output_arn,
self.name,
len(outputs),
)
except ClientError:
logger.exception("Couldn't add output %s to %s.", output_arn, self.name)
raise
else:
return outputs
```
+ Per i dettagli sull'API, consulta [AddApplicationOutput AWS](https://docs.aws.amazon.com/goto/boto3/kinesisanalyticsv2-2018-05-23/AddApplicationOutput)*SDK for Python (Boto3) API Reference*.
------
# Utilizzare con un SDK `CreateApplication` AWS
Il seguente esempio di codice mostra come utilizzare`CreateApplication`.
------
#### [ Python ]
**SDK per Python (Boto3)**
C'è altro da fare GitHub. Trova l'esempio completo e scopri di più sulla configurazione e l'esecuzione nel [Repository di esempi di codice AWS](https://github.com/awsdocs/aws-doc-sdk-examples/tree/main/python/example_code/kinesis-analytics-v2#code-examples).
```
class KinesisAnalyticsApplicationV2:
"""Encapsulates Kinesis Data Analytics application functions."""
def __init__(self, analytics_client):
"""
:param analytics_client: A Boto3 Kinesis Data Analytics v2 client.
"""
self.analytics_client = analytics_client
self.name = None
self.arn = None
self.version_id = None
self.create_timestamp = None
def create(self, app_name, role_arn, env="SQL-1_0"):
"""
Creates a Kinesis Data Analytics application.
:param app_name: The name of the application.
:param role_arn: The ARN of a role that can be assumed by Kinesis Data
Analytics and grants needed permissions.
:param env: The runtime environment of the application, such as SQL. Code
uploaded to the application runs in this environment.
:return: Metadata about the newly created application.
"""
try:
response = self.analytics_client.create_application(
ApplicationName=app_name,
RuntimeEnvironment=env,
ServiceExecutionRole=role_arn,
)
details = response["ApplicationDetail"]
self._update_details(details)
logger.info("Application %s created.", app_name)
except ClientError:
logger.exception("Couldn't create application %s.", app_name)
raise
else:
return details
```
+ Per i dettagli sull'API, consulta [CreateApplication AWS](https://docs.aws.amazon.com/goto/boto3/kinesisanalyticsv2-2018-05-23/CreateApplication)*SDK for Python (Boto3) API Reference*.
------
# Utilizzare con un SDK `DeleteApplication` AWS
Il seguente esempio di codice mostra come utilizzare`DeleteApplication`.
------
#### [ Python ]
**SDK per Python (Boto3)**
C'è altro da fare GitHub. Trova l'esempio completo e scopri di più sulla configurazione e l'esecuzione nel [Repository di esempi di codice AWS](https://github.com/awsdocs/aws-doc-sdk-examples/tree/main/python/example_code/kinesis-analytics-v2#code-examples).
```
class KinesisAnalyticsApplicationV2:
"""Encapsulates Kinesis Data Analytics application functions."""
def __init__(self, analytics_client):
"""
:param analytics_client: A Boto3 Kinesis Data Analytics v2 client.
"""
self.analytics_client = analytics_client
self.name = None
self.arn = None
self.version_id = None
self.create_timestamp = None
def delete(self):
"""
Deletes an application.
"""
try:
self.analytics_client.delete_application(
ApplicationName=self.name, CreateTimestamp=self.create_timestamp
)
logger.info("Deleted application %s.", self.name)
except ClientError:
logger.exception("Couldn't delete application %s.", self.name)
raise
```
+ Per i dettagli sull'API, consulta [DeleteApplication AWS](https://docs.aws.amazon.com/goto/boto3/kinesisanalyticsv2-2018-05-23/DeleteApplication)*SDK for Python (Boto3) API Reference*.
------
# Utilizzare con un SDK `DescribeApplication` AWS
Il seguente esempio di codice mostra come utilizzare`DescribeApplication`.
------
#### [ Python ]
**SDK per Python (Boto3)**
C'è altro da fare GitHub. Trova l'esempio completo e scopri di più sulla configurazione e l'esecuzione nel [Repository di esempi di codice AWS](https://github.com/awsdocs/aws-doc-sdk-examples/tree/main/python/example_code/kinesis-analytics-v2#code-examples).
```
class KinesisAnalyticsApplicationV2:
"""Encapsulates Kinesis Data Analytics application functions."""
def __init__(self, analytics_client):
"""
:param analytics_client: A Boto3 Kinesis Data Analytics v2 client.
"""
self.analytics_client = analytics_client
self.name = None
self.arn = None
self.version_id = None
self.create_timestamp = None
def describe(self, name):
"""
Gets metadata about an application.
:param name: The name of the application to look up.
:return: Metadata about the application.
"""
try:
response = self.analytics_client.describe_application(ApplicationName=name)
details = response["ApplicationDetail"]
self._update_details(details)
logger.info("Got metadata for application %s.", name)
except ClientError:
logger.exception("Couldn't get metadata for application %s.", name)
raise
else:
return details
```
+ Per i dettagli sull'API, consulta [DescribeApplication AWS](https://docs.aws.amazon.com/goto/boto3/kinesisanalyticsv2-2018-05-23/DescribeApplication)*SDK for Python (Boto3) API Reference*.
------
# Utilizzare con un SDK `DescribeApplicationSnapshot` AWS
Il seguente esempio di codice mostra come utilizzare`DescribeApplicationSnapshot`.
------
#### [ Python ]
**SDK per Python (Boto3)**
C'è altro da fare GitHub. Trova l'esempio completo e scopri di più sulla configurazione e l'esecuzione nel [Repository di esempi di codice AWS](https://github.com/awsdocs/aws-doc-sdk-examples/tree/main/python/example_code/kinesis-analytics-v2#code-examples).
```
class KinesisAnalyticsApplicationV2:
"""Encapsulates Kinesis Data Analytics application functions."""
def __init__(self, analytics_client):
"""
:param analytics_client: A Boto3 Kinesis Data Analytics v2 client.
"""
self.analytics_client = analytics_client
self.name = None
self.arn = None
self.version_id = None
self.create_timestamp = None
def describe_snapshot(self, application_name, snapshot_name):
"""
Gets metadata about a previously saved application snapshot.
:param application_name: The name of the application.
:param snapshot_name: The name of the snapshot.
:return: Metadata about the snapshot.
"""
try:
response = self.analytics_client.describe_application_snapshot(
ApplicationName=application_name, SnapshotName=snapshot_name
)
snapshot = response["SnapshotDetails"]
logger.info(
"Got metadata for snapshot %s of application %s.",
snapshot_name,
application_name,
)
except ClientError:
logger.exception(
"Couldn't get metadata for snapshot %s of application %s.",
snapshot_name,
application_name,
)
raise
else:
return snapshot
```
+ Per i dettagli sull'API, consulta [DescribeApplicationSnapshot AWS](https://docs.aws.amazon.com/goto/boto3/kinesisanalyticsv2-2018-05-23/DescribeApplicationSnapshot)*SDK for Python (Boto3) API Reference*.
------
# Utilizzare con un SDK `DiscoverInputSchema` AWS
Il seguente esempio di codice mostra come utilizzare`DiscoverInputSchema`.
------
#### [ Python ]
**SDK per Python (Boto3)**
C'è altro da fare GitHub. Trova l'esempio completo e scopri di più sulla configurazione e l'esecuzione nel [Repository di esempi di codice AWS](https://github.com/awsdocs/aws-doc-sdk-examples/tree/main/python/example_code/kinesis-analytics-v2#code-examples).
```
class KinesisAnalyticsApplicationV2:
"""Encapsulates Kinesis Data Analytics application functions."""
def __init__(self, analytics_client):
"""
:param analytics_client: A Boto3 Kinesis Data Analytics v2 client.
"""
self.analytics_client = analytics_client
self.name = None
self.arn = None
self.version_id = None
self.create_timestamp = None
def discover_input_schema(self, stream_arn, role_arn):
"""
Discovers a schema that maps data in a stream to a format that is usable by
an application's runtime environment. The stream must be active and have
enough data moving through it for the service to sample. The returned schema
can be used when you add the stream as an input to the application or you can
write your own schema.
:param stream_arn: The ARN of the stream to map.
:param role_arn: A role that lets Kinesis Data Analytics read from the stream.
:return: The discovered schema of the data in the input stream.
"""
try:
response = self.analytics_client.discover_input_schema(
ResourceARN=stream_arn,
ServiceExecutionRole=role_arn,
InputStartingPositionConfiguration={"InputStartingPosition": "NOW"},
)
schema = response["InputSchema"]
logger.info("Discovered input schema for stream %s.", stream_arn)
except ClientError:
logger.exception(
"Couldn't discover input schema for stream %s.", stream_arn
)
raise
else:
return schema
```
+ Per i dettagli sull'API, consulta [DiscoverInputSchema AWS](https://docs.aws.amazon.com/goto/boto3/kinesisanalyticsv2-2018-05-23/DiscoverInputSchema)*SDK for Python (Boto3) API Reference*.
------
# Utilizzare con un SDK `StartApplication` AWS
Il seguente esempio di codice mostra come utilizzare`StartApplication`.
------
#### [ Python ]
**SDK per Python (Boto3)**
C'è altro da fare GitHub. Trova l'esempio completo e scopri di più sulla configurazione e l'esecuzione nel [Repository di esempi di codice AWS](https://github.com/awsdocs/aws-doc-sdk-examples/tree/main/python/example_code/kinesis-analytics-v2#code-examples).
```
class KinesisAnalyticsApplicationV2:
"""Encapsulates Kinesis Data Analytics application functions."""
def __init__(self, analytics_client):
"""
:param analytics_client: A Boto3 Kinesis Data Analytics v2 client.
"""
self.analytics_client = analytics_client
self.name = None
self.arn = None
self.version_id = None
self.create_timestamp = None
def start(self, input_id):
"""
Starts an application. After the application is running, it reads from the
specified input stream and runs the application code on the incoming data.
:param input_id: The ID of the input to read.
"""
try:
self.analytics_client.start_application(
ApplicationName=self.name,
RunConfiguration={
"SqlRunConfigurations": [
{
"InputId": input_id,
"InputStartingPositionConfiguration": {
"InputStartingPosition": "NOW"
},
}
]
},
)
logger.info("Started application %s.", self.name)
except ClientError:
logger.exception("Couldn't start application %s.", self.name)
raise
```
+ Per i dettagli sull'API, consulta [StartApplication AWS](https://docs.aws.amazon.com/goto/boto3/kinesisanalyticsv2-2018-05-23/StartApplication)*SDK for Python (Boto3) API Reference*.
------
# Utilizzare con un SDK `StopApplication` AWS
Il seguente esempio di codice mostra come utilizzare`StopApplication`.
------
#### [ Python ]
**SDK per Python (Boto3)**
C'è altro da fare GitHub. Trova l'esempio completo e scopri di più sulla configurazione e l'esecuzione nel [Repository di esempi di codice AWS](https://github.com/awsdocs/aws-doc-sdk-examples/tree/main/python/example_code/kinesis-analytics-v2#code-examples).
```
class KinesisAnalyticsApplicationV2:
"""Encapsulates Kinesis Data Analytics application functions."""
def __init__(self, analytics_client):
"""
:param analytics_client: A Boto3 Kinesis Data Analytics v2 client.
"""
self.analytics_client = analytics_client
self.name = None
self.arn = None
self.version_id = None
self.create_timestamp = None
def stop(self):
"""
Stops an application. This stops the application from processing data but
does not delete any resources.
"""
try:
self.analytics_client.stop_application(ApplicationName=self.name)
logger.info("Stopping application %s.", self.name)
except ClientError:
logger.exception("Couldn't stop application %s.", self.name)
raise
```
+ Per i dettagli sull'API, consulta [StopApplication AWS](https://docs.aws.amazon.com/goto/boto3/kinesisanalyticsv2-2018-05-23/StopApplication)*SDK for Python (Boto3) API Reference*.
------
# Utilizzare con un SDK `UpdateApplication` AWS
Il seguente esempio di codice mostra come utilizzare`UpdateApplication`.
------
#### [ Python ]
**SDK per Python (Boto3)**
C'è altro da fare GitHub. Trova l'esempio completo e scopri di più sulla configurazione e l'esecuzione nel [Repository di esempi di codice AWS](https://github.com/awsdocs/aws-doc-sdk-examples/tree/main/python/example_code/kinesis-analytics-v2#code-examples).
Questo esempio aggiorna il codice eseguito in un’applicazione esistente.
```
class KinesisAnalyticsApplicationV2:
"""Encapsulates Kinesis Data Analytics application functions."""
def __init__(self, analytics_client):
"""
:param analytics_client: A Boto3 Kinesis Data Analytics v2 client.
"""
self.analytics_client = analytics_client
self.name = None
self.arn = None
self.version_id = None
self.create_timestamp = None
def update_code(self, code):
"""
Updates the code that runs in the application. The code must run in the
runtime environment of the application, such as SQL. Application code
typically reads data from in-application streams and transforms it in some way.
:param code: The code to upload. This completely replaces any existing code
in the application.
:return: Metadata about the application.
"""
try:
response = self.analytics_client.update_application(
ApplicationName=self.name,
CurrentApplicationVersionId=self.version_id,
ApplicationConfigurationUpdate={
"ApplicationCodeConfigurationUpdate": {
"CodeContentTypeUpdate": "PLAINTEXT",
"CodeContentUpdate": {"TextContentUpdate": code},
}
},
)
details = response["ApplicationDetail"]
self.version_id = details["ApplicationVersionId"]
logger.info("Update code for application %s.", self.name)
except ClientError:
logger.exception("Couldn't update code for application %s.", self.name)
raise
else:
return details
```
+ Per i dettagli sull'API, consulta [UpdateApplication AWS](https://docs.aws.amazon.com/goto/boto3/kinesisanalyticsv2-2018-05-23/UpdateApplication)*SDK for Python (Boto3) API Reference*.
------