Do It All In Rust #8
6 changed files with 1826 additions and 10 deletions
5
.gitignore
vendored
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.gitignore
vendored
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.env
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.envrc
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.DS_Store
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# Added by cargo
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/target
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1604
Cargo.lock
generated
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1604
Cargo.lock
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14
Cargo.toml
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14
Cargo.toml
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[package]
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name = "smsbb"
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version = "0.1.0"
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edition = "2021"
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# See more keys and their definitions at https://doc.rust-lang.org/cargo/reference/manifest.html
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[dependencies]
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aws-config = { version = "1.1.5", features = ["sso"] }
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aws-sdk-dynamodb = "1.14.0"
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aws-sdk-sns = "1.13.0"
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aws-sdk-sqs = "1.13.0"
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clap = "4.4.18"
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tokio = { version = "1.36.0", features = ["full"] }
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37
README.md
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README.md
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# smsbb 👼
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✨ DIY sms announce lists for you and yours ✨
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## norms for working on this repo
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- work in a branch
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- branch names should use the format `username/thing-you-are-doing`
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- for example `git checkout -b maren/update-readme-3`
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- don't worry about tidy commits! just keep your work in a branch
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- open a PR and review with someone synchronously before merging to main
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## getting started real fast
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1. Make sure you have Rust (+ cargo) installed. The preferred way to do this
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is with [rustup](https://rustup.rs).
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2. Set up [an AWS Account](https://aws.amazon.com). Following the getting
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started guide for the [AWS SDK For Rust](https://aws.amazon.com/sdk-for-rust/)
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is a good way to get set up. We can confirm that this all works correctly
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using Workforce Identity, i.e. establishing a profile in `~/.aws/config`,
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setting the `AWS_PROFILE` environment variable appropriately, and using
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`aws sso login` to get an access token.
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3. With your preferred authentication mechanism set up (see above for
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settings for Workforce Identity), run
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```
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cargo run
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```
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As of right this second, all the code does is set up DynamoDB tables.
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The immediate future work here is:
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1. Write code to provision AWS Pinpoint for each of smsbb's text campaigns
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2. Figure out how to embed another Rust binary inside the main Rust binary
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3. Use the embedded Rust binaries to deploy Lambda functions
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10
readme.md
10
readme.md
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# smsbb 👼
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✨ DIY sms announce lists for you and yours ✨
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## norms for working on this repo
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- work in a branch
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- branch names should use the format `username/thing-you-are-doing`
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- for example `git checkout -b maren/update-readme-3`
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- don't worry about tidy commits! just keep your work in a branch
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- open a PR and review with someone synchronously before merging to main
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166
src/main.rs
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src/main.rs
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use aws_config::meta::region::RegionProviderChain;
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use aws_config::BehaviorVersion;
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use aws_sdk_dynamodb::operation::create_table::CreateTableError;
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// use aws_sdk_sns::{Client as SnsClient, Error as SnsError};
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use aws_sdk_dynamodb::Client as DynamoClient;
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use aws_sdk_dynamodb::types::{AttributeDefinition, BillingMode, KeySchemaElement, KeyType, ScalarAttributeType};
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// const TOPIC_PREFIX: &'static str = "smsbb_";
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const TABLE_PREFIX: &'static str = "smsbb_";
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/*
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fn full_topic_name(s: &str) -> String {
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format!("{}{}", TOPIC_PREFIX, s)
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}
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*/
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fn table_name_with_prefix(s: &str) -> String {
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format!("{}{}", TABLE_PREFIX, s)
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}
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fn users_table_name() -> String {
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table_name_with_prefix("users")
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}
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fn campaigns_table_name() -> String {
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table_name_with_prefix("campaigns")
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}
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fn messages_table_name() -> String {
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table_name_with_prefix("messages")
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}
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fn unsubscribes_table_name() -> String {
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table_name_with_prefix("unsubscribes")
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}
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#[derive(Debug)]
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enum SmsbbInternalError {
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CreateTableFailed(String)
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}
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fn create_table_failed(table_name: &str) -> SmsbbInternalError {
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SmsbbInternalError::CreateTableFailed(table_name.to_string())
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}
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struct DynamoKeySpecification<'a> {
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hash_key: &'a str,
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sort_key: Option<&'a str>
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}
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fn build_key_schema_element(attr_name: &str, key_type: KeyType) -> KeySchemaElement {
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KeySchemaElement::builder()
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.attribute_name(attr_name)
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.key_type(key_type)
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.build()
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.unwrap()
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}
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fn string_attribute_definition(name: &str) -> AttributeDefinition {
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AttributeDefinition::builder().attribute_name(name).attribute_type(ScalarAttributeType::S).build().unwrap()
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}
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fn atribute_definitions_for_key<'a>(primary_key: &DynamoKeySpecification) -> Option<Vec<AttributeDefinition>> {
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let mut results = vec!(string_attribute_definition(primary_key.hash_key));
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match primary_key.sort_key {
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Some(sort_key) => {
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results.push(string_attribute_definition(sort_key))
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}
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None => {}
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}
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Some(results)
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}
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async fn create_table_if_not_exists<'a>(
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client: &DynamoClient,
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table_name: &str,
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primary_key: &DynamoKeySpecification<'a>
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) -> Result<(), SmsbbInternalError> {
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let primary_key_schema = build_key_schema_element(primary_key.hash_key, KeyType::Hash);
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let mut table_builder = client.create_table()
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.set_attribute_definitions(atribute_definitions_for_key(primary_key))
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.table_name(table_name)
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.key_schema(primary_key_schema)
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.billing_mode(BillingMode::PayPerRequest);
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match primary_key.sort_key {
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Some(sort_key) => {
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table_builder = table_builder.key_schema(build_key_schema_element(sort_key, KeyType::Range));
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}
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None => {}
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}
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let build_result = table_builder.send().await;
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match build_result {
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Ok(_) => {},
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Err(e) => {
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match e.as_service_error() {
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None => {
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dbg!("{}", e);
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return Err(create_table_failed(table_name));
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},
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Some(cte) => {
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match cte {
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CreateTableError::ResourceInUseException(_) => {
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}
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problem => {
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dbg!("{}", problem);
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return Err(create_table_failed(table_name));
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}
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}
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}
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}
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}
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}
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// We're not handling secondary indexes yet.
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Ok(())
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}
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async fn ensure_tables(client: &DynamoClient) -> Result<(), SmsbbInternalError> {
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let users_table = users_table_name();
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let users_key = DynamoKeySpecification { hash_key: "email", sort_key: None };
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create_table_if_not_exists(client, &users_table, &users_key).await?;
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let campaign_table = campaigns_table_name();
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let campaign_key = DynamoKeySpecification { hash_key: "campaign_name", sort_key: Some("created_at") };
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create_table_if_not_exists(client, &campaign_table, &campaign_key).await?;
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let messages_table = messages_table_name();
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let messages_key = DynamoKeySpecification { hash_key: "campaign_name", sort_key: Some("message_id") };
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create_table_if_not_exists(client, &messages_table, &messages_key).await?;
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let unsubscribes_table = unsubscribes_table_name();
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let unsubscribes_key = DynamoKeySpecification { hash_key: "campaign_name", sort_key: Some("phone_number") };
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create_table_if_not_exists(client, &unsubscribes_table, &unsubscribes_key).await?;
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Ok(())
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}
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#[tokio::main]
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async fn main() -> Result<(), SmsbbInternalError> {
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let region_provider = RegionProviderChain::default_provider()
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.or_else("us-east-1");
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let config = aws_config::defaults(BehaviorVersion::latest())
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.region(region_provider)
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.load()
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.await;
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let dynamo_client = DynamoClient::new(&config);
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let ensure_resp = ensure_tables(&dynamo_client).await;
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match ensure_resp {
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Err(sdk_error) => {
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dbg!("{}", sdk_error);
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return Err(SmsbbInternalError::CreateTableFailed("woof".to_string()));
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},
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_ => {}
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}
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Ok(())
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}
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