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dynamodb-helloworld.rs
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dynamodb-helloworld.rs
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/*
* Copyright Amazon.com, Inc. or its affiliates. All Rights Reserved.
* SPDX-License-Identifier: Apache-2.0.
*/
use aws_config::meta::region::RegionProviderChain;
use aws_sdk_dynamodb::model::{
AttributeDefinition, KeySchemaElement, KeyType, ProvisionedThroughput, ScalarAttributeType,
};
use aws_sdk_dynamodb::{Client, Error, Region, PKG_VERSION};
use structopt::StructOpt;
#[derive(Debug, StructOpt)]
struct Opt {
/// The AWS Region.
#[structopt(short, long)]
region: Option<String>,
/// Whether to display additional information.
#[structopt(short, long)]
verbose: bool,
}
// Lists your tables.
// snippet-start:[dynamodb.rust.dynamodb-helloworld-list_tables]
async fn list_tables(client: &Client) -> Result<(), Error> {
let tables = client.list_tables().send().await?;
println!("Current DynamoDB tables: {:?}", tables);
Ok(())
}
// snippet-end:[dynamodb.rust.dynamodb-helloworld-list_tables]
// Creates the test-table table.
// snippet-start:[dynamodb.rust.dynamodb-helloworld-create_table]
async fn create_table(client: &Client) -> Result<(), Error> {
let new_table = client
.create_table()
.table_name("test-table")
.key_schema(
KeySchemaElement::builder()
.attribute_name("k")
.key_type(KeyType::Hash)
.build(),
)
.attribute_definitions(
AttributeDefinition::builder()
.attribute_name("k")
.attribute_type(ScalarAttributeType::S)
.build(),
)
.provisioned_throughput(
ProvisionedThroughput::builder()
.write_capacity_units(10)
.read_capacity_units(10)
.build(),
)
.send()
.await?;
println!(
"new table: {:#?}",
&new_table.table_description().unwrap().table_arn().unwrap()
);
Ok(())
}
// snippet-end:[dynamodb.rust.dynamodb-helloworld-create_table]
/// Lists your DynamoDB tables and creates the table **test_table**.
/// # Arguments
///
/// * `[-r REGION]` - The region in which the client is created.
/// If not supplied, uses the value of the **AWS_REGION** environment variable.
/// If the environment variable is not set, defaults to **us-west-2**.
/// * `[-v]` - Whether to display additional information.
#[tokio::main]
async fn main() -> Result<(), Error> {
tracing_subscriber::fmt::init();
let Opt { region, verbose } = Opt::from_args();
let region_provider = RegionProviderChain::first_try(region.map(Region::new))
.or_default_provider()
.or_else(Region::new("us-west-2"));
println!();
if verbose {
println!("DynamoDB client version: {}", PKG_VERSION);
println!(
"Region: {}",
region_provider.region().await.unwrap().as_ref()
);
println!();
}
let shared_config = aws_config::from_env().region(region_provider).load().await;
let client = Client::new(&shared_config);
list_tables(&client).await?;
create_table(&client).await
}