Pour des fonctionnalités similaires à celles d'Amazon Timestream pour, pensez à Amazon Timestream LiveAnalytics pour InfluxDB. Il permet une ingestion simplifiée des données et des temps de réponse aux requêtes à un chiffre en millisecondes pour des analyses en temps réel. Pour en savoir plus, [cliquez ici](https://docs.aws.amazon.com//timestream/latest/developerguide/timestream-for-influxdb.html).

Les traductions sont fournies par des outils de traduction automatique. En cas de conflit entre le contenu d'une traduction et celui de la version originale en anglais, la version anglaise prévaudra.

# Liste des bases de données
<a name="code-samples.list-db"></a>

Vous pouvez utiliser les extraits de code suivants pour répertorier vos bases de données.

**Note**  
Ces extraits de code sont basés sur des exemples complets d'applications sur. [GitHub](https://github.com/awslabs/amazon-timestream-tools/blob/master/sample_apps) Pour plus d'informations sur la façon de démarrer avec les exemples d'applications, consultez[Exemple d’application](sample-apps.md).

------
#### [  Java  ]

```
    public void listDatabases() {
        System.out.println("Listing databases");
        ListDatabasesRequest request = new ListDatabasesRequest();
        ListDatabasesResult result = amazonTimestreamWrite.listDatabases(request);
        final List<Database> databases = result.getDatabases();
        printDatabases(databases);

        String nextToken = result.getNextToken();
        while (nextToken != null && !nextToken.isEmpty()) {
            request.setNextToken(nextToken);
            ListDatabasesResult nextResult = amazonTimestreamWrite.listDatabases(request);
            final List<Database> nextDatabases = nextResult.getDatabases();
            printDatabases(nextDatabases);
            nextToken = nextResult.getNextToken();
        }
    }
    
    private void printDatabases(List<Database> databases) {
        for (Database db : databases) {
            System.out.println(db.getDatabaseName());
        }
    }
```

------
#### [  Java v2  ]

```
    public void listDatabases() {
        System.out.println("Listing databases");
        ListDatabasesRequest request = ListDatabasesRequest.builder().maxResults(2).build();
        ListDatabasesIterable listDatabasesIterable = timestreamWriteClient.listDatabasesPaginator(request);
        for(ListDatabasesResponse listDatabasesResponse : listDatabasesIterable) {
            final List<Database> databases = listDatabasesResponse.databases();
            databases.forEach(database -> System.out.println(database.databaseName()));
        }
    }
```

------
#### [  Go  ]

```
// List databases.
    listDatabasesMaxResult := int64(15)

    listDatabasesInput := &timestreamwrite.ListDatabasesInput{
        MaxResults: &listDatabasesMaxResult,
    }

    listDatabasesOutput, err := writeSvc.ListDatabases(listDatabasesInput)

    if err != nil {
        fmt.Println("Error:")
        fmt.Println(err)
    } else {
        fmt.Println("List databases is successful, below is the output:")
        fmt.Println(listDatabasesOutput)
    }
```

------
#### [  Python  ]

```
    def list_databases(self):
        print("Listing databases")
        try:
            result = self.client.list_databases(MaxResults=5)
            self._print_databases(result['Databases'])
            next_token = result.get('NextToken', None)
            while next_token:
                result = self.client.list_databases(NextToken=next_token, MaxResults=5)
                self._print_databases(result['Databases'])
                next_token = result.get('NextToken', None)
        except Exception as err:
            print("List databases failed:", err)
```

------
#### [  Node.js  ]

L'extrait suivant utilise le AWS SDK pour la version 3. JavaScript Pour plus d'informations sur l'installation du client et son utilisation, consultez [Timestream Write Client - AWS SDK](https://docs.aws.amazon.com/AWSJavaScriptSDK/v3/latest/clients/client-timestream-write/index.html) pour v3. JavaScript 

Voir également [Classe ListDatabasesCommand](https://docs.aws.amazon.com/AWSJavaScriptSDK/v3/latest/clients/client-timestream-write/classes/listdatabasescommand.html) et [ListDatabases](https://docs.aws.amazon.com/timestream/latest/developerguide/API_ListDatabases.html).

```
import { TimestreamWriteClient, ListDatabasesCommand } from "@aws-sdk/client-timestream-write";
const writeClient = new TimestreamWriteClient({ region: "us-east-1" });

const params = {
    MaxResults: 15
};

const command = new ListDatabasesCommand(params);

getDatabasesList(null);

async function getDatabasesList(nextToken) {
    if (nextToken) {
        params.NextToken = nextToken;
    }

    try {
        const data = await writeClient.send(command);

        data.Databases.forEach(function (database) {
            console.log(database.DatabaseName);
        });

        if (data.NextToken) {
            return getDatabasesList(data.NextToken);
        }
    } catch (error) {
        console.log("Error while listing databases", error);
    }
}
```

L'extrait de code suivant utilise le AWS SDK pour JavaScript le style V2. Il est basé sur l'exemple d'application disponible sur [Node.js, un exemple d'Amazon Timestream LiveAnalytics ](https://github.com/awslabs/amazon-timestream-tools/tree/mainline/sample_apps/js) pour une application sur. GitHub

```
async function listDatabases() {
    console.log("Listing databases:");
    const databases = await getDatabasesList(null);
    databases.forEach(function(database){
        console.log(database.DatabaseName);
    });
}

function getDatabasesList(nextToken, databases = []) {
    var params = {
        MaxResults: 15
    };

    if(nextToken) {
        params.NextToken = nextToken;
    }

    return writeClient.listDatabases(params).promise()
        .then(
            (data) => {
                databases.push.apply(databases, data.Databases);
                if (data.NextToken) {
                    return getDatabasesList(data.NextToken, databases);
                } else {
                    return databases;
                }
            },
            (err) => {
                console.log("Error while listing databases", err);
            });
}
```

------
#### [  .NET  ]

```
        public async Task ListDatabases()
        {
            Console.WriteLine("Listing Databases");

            try
            {
                var listDatabasesRequest = new ListDatabasesRequest
                {
                    MaxResults = 5
                };
                ListDatabasesResponse response = await writeClient.ListDatabasesAsync(listDatabasesRequest);
                PrintDatabases(response.Databases);
                var nextToken = response.NextToken;
                while (nextToken != null)
                {
                    listDatabasesRequest.NextToken = nextToken;
                    response = await writeClient.ListDatabasesAsync(listDatabasesRequest);
                    PrintDatabases(response.Databases);
                    nextToken = response.NextToken;
                }
            }
            catch (Exception e)
            {
                Console.WriteLine("List database failed:" + e.ToString());
            }

        }
```

------