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delete-item.rs
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delete-item.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::AttributeValue;
use aws_sdk_dynamodb::{Client, Error, Region, PKG_VERSION};
use std::process;
use structopt::StructOpt;
#[derive(Debug, StructOpt)]
struct Opt {
/// The AWS Region.
#[structopt(short, long)]
region: Option<String>,
/// The name of the table.
#[structopt(short, long)]
table: String,
/// The key for the item in the table.
#[structopt(short, long)]
key: String,
/// The value of the item to delete from the table.
#[structopt(short, long)]
value: String,
/// Whether to display additional information.
#[structopt(short, long)]
info: bool,
}
// Deletes an item from the table.
// snippet-start:[dynamodb.rust.delete-item]
async fn delete_item(client: &Client, table: &str, key: &str, value: &str) -> Result<(), Error> {
match client
.delete_item()
.table_name(table)
.key(key, AttributeValue::S(value.into()))
.send()
.await
{
Ok(_) => println!("Deleted item from table"),
Err(e) => {
println!("Got an error deleting item from table:");
println!("{}", e);
process::exit(1);
}
};
Ok(())
}
// snippet-end:[dynamodb.rust.delete-item]
/// Deletes an item from an Amazon DynamoDB table.
/// The table schema must use the key as the primary key.
/// # Arguments
///
/// * `-t TABLE` - The name of the table.
/// * `-k KEY` - The table's primary key.
/// * `-v VALUE` - The value of the item's primary key.
/// * `[-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**.
/// * `[-i]` - Whether to display additional information.
#[tokio::main]
async fn main() -> Result<(), Error> {
tracing_subscriber::fmt::init();
let Opt {
info,
key,
region,
table,
value,
} = 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 info {
println!("DynamoDB client version: {}", PKG_VERSION);
println!(
"Region: {}",
region_provider.region().await.unwrap().as_ref()
);
println!("Table: {}", &table);
println!("Key: {}", &key);
println!("Value: {}", &value);
println!();
}
let shared_config = aws_config::from_env().region(region_provider).load().await;
let client = Client::new(&shared_config);
delete_item(&client, &table, &key, &value).await
}