├── .gitignore ├── Cargo.toml ├── LICENSE ├── Makefile ├── README.md ├── events └── event.json ├── get-by-id ├── Cargo.toml └── src │ ├── data │ ├── mod.rs │ ├── models.rs │ └── repositories.rs │ └── main.rs ├── rust_ddb.png ├── samconfig.toml └── template.yaml /.gitignore: -------------------------------------------------------------------------------- 1 | # Created by https://www.toptal.com/developers/gitignore/api/rust,osx,linux,windows,pycharm,visualstudiocode 2 | # Edit at https://www.toptal.com/developers/gitignore?templates=rust,osx,linux,windows,pycharm,visualstudiocode 3 | 4 | ### Linux ### 5 | *~ 6 | 7 | # temporary files which can be created if a process still has a handle open of a deleted file 8 | .fuse_hidden* 9 | 10 | # KDE directory preferences 11 | .directory 12 | 13 | # Linux trash folder which might appear on any partition or disk 14 | .Trash-* 15 | 16 | # .nfs files are created when an open file is removed but is still being accessed 17 | .nfs* 18 | 19 | ### OSX ### 20 | # General 21 | .DS_Store 22 | .AppleDouble 23 | .LSOverride 24 | 25 | # Icon must end with two \r 26 | Icon 27 | 28 | 29 | # Thumbnails 30 | ._* 31 | 32 | # Files that might appear in the root of a volume 33 | .DocumentRevisions-V100 34 | .fseventsd 35 | .Spotlight-V100 36 | .TemporaryItems 37 | .Trashes 38 | .VolumeIcon.icns 39 | .com.apple.timemachine.donotpresent 40 | 41 | # Directories potentially created on remote AFP share 42 | .AppleDB 43 | .AppleDesktop 44 | Network Trash Folder 45 | Temporary Items 46 | .apdisk 47 | 48 | ### PyCharm ### 49 | # Covers JetBrains IDEs: IntelliJ, RubyMine, PhpStorm, AppCode, PyCharm, CLion, Android Studio, WebStorm and Rider 50 | # Reference: https://intellij-support.jetbrains.com/hc/en-us/articles/206544839 51 | 52 | # User-specific stuff 53 | .idea/**/workspace.xml 54 | .idea/**/tasks.xml 55 | .idea/**/usage.statistics.xml 56 | .idea/**/dictionaries 57 | .idea/**/shelf 58 | 59 | # AWS User-specific 60 | .idea/**/aws.xml 61 | 62 | # Generated files 63 | .idea/**/contentModel.xml 64 | 65 | # Sensitive or high-churn files 66 | .idea/**/dataSources/ 67 | .idea/**/dataSources.ids 68 | .idea/**/dataSources.local.xml 69 | .idea/**/sqlDataSources.xml 70 | .idea/**/dynamic.xml 71 | .idea/**/uiDesigner.xml 72 | .idea/**/dbnavigator.xml 73 | 74 | # Gradle 75 | .idea/**/gradle.xml 76 | .idea/**/libraries 77 | 78 | # Gradle and Maven with auto-import 79 | # When using Gradle or Maven with auto-import, you should exclude module files, 80 | # since they will be recreated, and may cause churn. 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But first, please read 674 | . -------------------------------------------------------------------------------- /Makefile: -------------------------------------------------------------------------------- 1 | build: 2 | sam build 3 | run-api: build 4 | sam local start-api --skip-pull-image 5 | deploy: build 6 | sam deploy -------------------------------------------------------------------------------- /README.md: -------------------------------------------------------------------------------- 1 | ## API Gateway, Lambda, DynamoDB and Rust 2 | 3 | Purpose: Showcase using the AWS Rust SDK to build a GET request at a Basic `/{id}` path which queries DynamoDB for a composite key 4 | 5 | ## Getting Started 6 | 7 | ### Deploying 8 | 9 | ### Dependencies 10 | 11 | - [SAM](https://docs.aws.amazon.com/serverless-application-model/latest/developerguide/install-sam-cli.html) 12 | - [Rust](https://www.rust-lang.org/tools/install) 13 | - [Cargo Lambda](https://www.cargo-lambda.info/guide/getting-started.html) 14 | 15 | ### clone the repository 16 | 17 | ```bash 18 | cd rust-ddb-api 19 | sam build 20 | sam deploy 21 | ``` 22 | 23 | ## Destroying 24 | 25 | Simply run: 26 | 27 | ```bash 28 | sam delete 29 | ``` 30 | 31 | ## Implementation 32 | 33 | For a further and in-depth review of how to use this repository and what it supports, head on over the [Blog Article](https://www.binaryheap.com/api-gateway-lambda-dynamodb-rust/) 34 | 35 | ## Design 36 | 37 | ![Rust DDB](./rust_ddb.png) 38 | -------------------------------------------------------------------------------- /events/event.json: -------------------------------------------------------------------------------- 1 | { 2 | "body": "hello world", 3 | "resource": "/{id}", 4 | "path": "/one", 5 | "httpMethod": "GET", 6 | "isBase64Encoded": false, 7 | "queryStringParameters": {}, 8 | "pathParameters": { 9 | "id": "one" 10 | }, 11 | "stageVariables": { 12 | "baz": "qux" 13 | }, 14 | "headers": { 15 | "Accept": "text/html,application/xhtml+xml,application/xml;q=0.9,image/webp,*/*;q=0.8", 16 | "Accept-Encoding": "gzip, deflate, sdch", 17 | "Accept-Language": "en-US,en;q=0.8", 18 | "Cache-Control": "max-age=0", 19 | "CloudFront-Forwarded-Proto": "https", 20 | "CloudFront-Is-Desktop-Viewer": "true", 21 | "CloudFront-Is-Mobile-Viewer": "false", 22 | "CloudFront-Is-SmartTV-Viewer": "false", 23 | "CloudFront-Is-Tablet-Viewer": "false", 24 | "CloudFront-Viewer-Country": "US", 25 | "Host": "1234567890.execute-api.us-east-1.amazonaws.com", 26 | "Upgrade-Insecure-Requests": "1", 27 | "User-Agent": "Custom User Agent String", 28 | "Via": "1.1 08f323deadbeefa7af34d5feb414ce27.cloudfront.net (CloudFront)", 29 | "X-Amz-Cf-Id": "cDehVQoZnx43VYQb9j2-nvCh-9z396Uhbp027Y2JvkCPNLmGJHqlaA==", 30 | "X-Forwarded-For": "127.0.0.1, 127.0.0.2", 31 | "X-Forwarded-Port": "443", 32 | "X-Forwarded-Proto": "https" 33 | }, 34 | "requestContext": { 35 | "accountId": "123456789012", 36 | "resourceId": "123456", 37 | "stage": "prod", 38 | "requestId": "c6af9ac6-7b61-11e6-9a41-93e8deadbeef", 39 | "requestTime": "09/Apr/2015:12:34:56 +0000", 40 | "requestTimeEpoch": 1428582896000, 41 | "identity": { 42 | "cognitoIdentityPoolId": null, 43 | "accountId": null, 44 | "cognitoIdentityId": null, 45 | "caller": null, 46 | "accessKey": null, 47 | "sourceIp": "127.0.0.1", 48 | "cognitoAuthenticationType": null, 49 | "cognitoAuthenticationProvider": null, 50 | "userArn": null, 51 | "userAgent": "Custom User Agent String", 52 | "user": null 53 | }, 54 | "path": "/prod/path/to/resource", 55 | "resourcePath": "/{proxy+}", 56 | "httpMethod": "POST", 57 | "apiId": "1234567890", 58 | "protocol": "HTTP/1.1" 59 | } 60 | } 61 | -------------------------------------------------------------------------------- /get-by-id/Cargo.toml: -------------------------------------------------------------------------------- 1 | [package] 2 | name = "ddb-api-sample" 3 | version = "0.1.0" 4 | edition = "2021" 5 | authors = ["Benjamen Pyle "] 6 | 7 | [package.metadata.lambda.env] 8 | TABLE_NAME = "ddb-api-sample-DynamoDBTable-9VQJ4NVTZL9N" 9 | 10 | # See more keys and their definitions at https://doc.rust-lang.org/cargo/reference/manifest.html 11 | 12 | [dependencies] 13 | 14 | aws-config = { features = ["behavior-version-latest"], version = "1.0.1" } 15 | aws-sdk-dynamodb = "1.2.0" 16 | serde_dynamo = { version = "4", features = ["aws-sdk-dynamodb+1"] } 17 | serde_json = "1" 18 | aws_lambda_events = { version = "0.8.3", default-features = false, features = [ 19 | "apigw", 20 | ] } 21 | lambda_runtime = "0.6.0" 22 | serde = "1.0.136" 23 | tokio = { version = "1", features = ["macros"] } 24 | tracing = { version = "0.1", features = ["log"] } 25 | tracing-subscriber = { version = "0.3", default-features = false, features = [ 26 | "fmt", 27 | "json", 28 | ] } 29 | thiserror = "1.0.50" 30 | display_json = "0.2.1" 31 | -------------------------------------------------------------------------------- /get-by-id/src/data/mod.rs: -------------------------------------------------------------------------------- 1 | pub mod models; 2 | pub mod repositories; 3 | -------------------------------------------------------------------------------- /get-by-id/src/data/models.rs: -------------------------------------------------------------------------------- 1 | use aws_sdk_dynamodb::{error::SdkError, types::AttributeValue}; 2 | use display_json::DisplayAsJsonPretty; 3 | use serde::{Deserialize, Serialize}; 4 | use serde_json::Value; 5 | use std::collections::HashMap; 6 | use thiserror::Error; 7 | 8 | #[derive(Serialize, Deserialize, Debug, DisplayAsJsonPretty)] 9 | pub struct Item { 10 | pk: String, 11 | sk: String, 12 | } 13 | 14 | impl Item { 15 | fn new(pk: String, sk: String) -> Self { 16 | Item { pk: pk, sk: sk } 17 | } 18 | } 19 | 20 | #[derive(Error, Debug)] 21 | pub enum ItemError { 22 | #[error("failed to parse serde_json::Value into Item {0}")] 23 | FromValue(&'static Value), 24 | 25 | #[error("failed to parse response into items: {0}")] 26 | FromSerde(serde_dynamo::Error), 27 | 28 | #[error("aws_sdk_dynamodb error: {0}")] 29 | Dynamo(aws_sdk_dynamodb::Error), 30 | 31 | #[error("unknown DynamoDB item error: {0}")] 32 | Unknown(String), 33 | } 34 | 35 | impl From for ItemError { 36 | fn from(err: aws_sdk_dynamodb::Error) -> Self { 37 | ItemError::Dynamo(err) 38 | } 39 | } 40 | 41 | impl From for ItemError { 42 | fn from(err: serde_dynamo::Error) -> Self { 43 | ItemError::FromSerde(err) 44 | } 45 | } 46 | 47 | impl From> for ItemError 48 | where 49 | E: std::fmt::Debug, 50 | R: std::fmt::Debug, 51 | { 52 | fn from(err: SdkError) -> Self { 53 | ItemError::Unknown(format!("{err:?}")) 54 | } 55 | } 56 | 57 | impl From> for Item { 58 | fn from(value: HashMap) -> Self { 59 | let item = Item::new( 60 | as_string(value.get("pk"), &"".to_string()), 61 | as_string(value.get("sk"), &"".to_string()), 62 | ); 63 | 64 | item 65 | } 66 | } 67 | 68 | fn as_string(val: Option<&AttributeValue>, default: &String) -> String { 69 | if let Some(v) = val { 70 | if let Ok(s) = v.as_s() { 71 | return s.to_owned(); 72 | } 73 | } 74 | default.to_owned() 75 | } 76 | -------------------------------------------------------------------------------- /get-by-id/src/data/repositories.rs: -------------------------------------------------------------------------------- 1 | use std::collections::HashMap; 2 | 3 | use super::models::{Item, ItemError}; 4 | use aws_sdk_dynamodb::{types::AttributeValue, Client}; 5 | use serde_dynamo::aws_sdk_dynamodb_1::from_item; 6 | 7 | pub async fn fetch_item(client: &Client, table_name: &str, id: &str) -> Result { 8 | let key_map: HashMap = [ 9 | ("pk".to_string(), AttributeValue::S(id.to_string())), 10 | ("sk".to_string(), AttributeValue::S(id.to_string())), 11 | ] 12 | .iter() 13 | .cloned() 14 | .collect(); 15 | 16 | match client 17 | .get_item() 18 | .table_name(table_name) 19 | .set_key(Some(key_map)) 20 | .send() 21 | .await 22 | { 23 | Ok(result) => { 24 | let i: Item = from_item(result.item.unwrap())?; 25 | Ok(i) 26 | } 27 | Err(e) => Err(e.into()), 28 | } 29 | } 30 | -------------------------------------------------------------------------------- /get-by-id/src/main.rs: -------------------------------------------------------------------------------- 1 | use std::env; 2 | 3 | // use aws_config::meta::region::RegionProviderChain; 4 | use aws_lambda_events::apigw::{ApiGatewayProxyRequest, ApiGatewayProxyResponse}; 5 | use aws_sdk_dynamodb::Client; 6 | use lambda_runtime::{run, service_fn, Error, LambdaEvent}; 7 | use serde_json::json; 8 | 9 | use crate::data::{ 10 | models::{Item, ItemError}, 11 | repositories::fetch_item, 12 | }; 13 | 14 | mod data; 15 | 16 | async fn function_handler( 17 | client: &Client, 18 | table_name: &str, 19 | event: LambdaEvent, 20 | ) -> Result { 21 | let mut resp = ApiGatewayProxyResponse { 22 | status_code: 200, 23 | is_base64_encoded: Some(false), 24 | body: Some(event.payload.path.unwrap().into()), 25 | multi_value_headers: Default::default(), 26 | headers: Default::default(), 27 | }; 28 | 29 | match event.payload.path_parameters.get("id") { 30 | Some(value) => { 31 | tracing::info!("(Value)={}", value); 32 | let item: Result = fetch_item(client, table_name, value).await; 33 | tracing::info!("Item retrieved now"); 34 | tracing::info!("(Item)={:?}", item); 35 | let body = json!(item.unwrap()).to_string(); 36 | resp.body = Some(body.into()); 37 | } 38 | None => { 39 | tracing::error!("Key doesn't exist"); 40 | resp.status_code = 404; 41 | } 42 | } 43 | 44 | Ok(resp) 45 | } 46 | 47 | #[tokio::main] 48 | async fn main() -> Result<(), Error> { 49 | tracing_subscriber::fmt() 50 | .json() 51 | .with_max_level(tracing::Level::INFO) 52 | .with_target(false) 53 | .init(); 54 | 55 | let stream = env::var("TABLE_NAME").unwrap(); 56 | let str_pointer = stream.as_str(); 57 | 58 | let config = aws_config::from_env() 59 | // .profile_name("personal") 60 | .load() 61 | .await; 62 | let client = Client::new(&config); 63 | let shared_client = &client; 64 | 65 | run(service_fn( 66 | move |event: LambdaEvent| async move { 67 | function_handler(&shared_client, str_pointer, event).await 68 | }, 69 | )) 70 | .await 71 | } 72 | -------------------------------------------------------------------------------- /rust_ddb.png: -------------------------------------------------------------------------------- https://raw.githubusercontent.com/benbpyle/rust-ddb-get-api/88e5e1d12739593889ab0db641cfa7e78b1001f8/rust_ddb.png -------------------------------------------------------------------------------- /samconfig.toml: -------------------------------------------------------------------------------- 1 | # More information about the configuration file can be found here: 2 | # https://docs.aws.amazon.com/serverless-application-model/latest/developerguide/serverless-sam-cli-config.html 3 | version = 0.1 4 | 5 | [default] 6 | [default.global.parameters] 7 | stack_name = "ddb-api-sample" 8 | 9 | [default.build.parameters] 10 | cached = true 11 | parallel = true 12 | # Rust Support for Cargo Lambda 13 | beta_features = true 14 | 15 | [default.validate.parameters] 16 | lint = true 17 | 18 | [default.deploy.parameters] 19 | capabilities = "CAPABILITY_IAM" 20 | confirm_changeset = false 21 | resolve_s3 = true 22 | s3_prefix = "ddb-api-sample" 23 | region = "us-west-2" 24 | profile = "personal" 25 | image_repositories = [] 26 | 27 | [default.package.parameters] 28 | resolve_s3 = true 29 | 30 | [default.sync.parameters] 31 | watch = true 32 | # Rust Support for Cargo Lambda 33 | beta_features = true 34 | 35 | [default.local_start_api.parameters] 36 | warm_containers = "EAGER" 37 | 38 | [default.local_start_lambda.parameters] 39 | warm_containers = "EAGER" 40 | -------------------------------------------------------------------------------- /template.yaml: -------------------------------------------------------------------------------- 1 | AWSTemplateFormatVersion: '2010-09-09' 2 | Transform: AWS::Serverless-2016-10-31 3 | Description: > 4 | ddb-api-sample 5 | 6 | Sample SAM Template for ddb-api-sample 7 | 8 | # More info about Globals: https://github.com/awslabs/serverless-application-model/blob/master/docs/globals.rst 9 | Globals: 10 | Function: 11 | Timeout: 3 12 | MemorySize: 128 13 | 14 | 15 | Resources: 16 | GetByIdFunction: 17 | Type: AWS::Serverless::Function # More info about Function Resource: https://github.com/awslabs/serverless-application-model/blob/master/versions/2016-10-31.md#awsserverlessfunction 18 | Metadata: 19 | BuildMethod: rust-cargolambda # More info about Cargo Lambda: https://github.com/cargo-lambda/cargo-lambda 20 | Properties: 21 | Environment: 22 | Variables: 23 | TABLE_NAME: !Ref DynamoDBTable 24 | CodeUri: . # Points to dir of Cargo.toml 25 | Handler: bootstrap # Do not change, as this is the default executable name produced by Cargo Lambda 26 | Runtime: provided.al2 27 | FunctionName: get-by-id 28 | Architectures: 29 | - arm64 30 | Policies: 31 | - DynamoDBCrudPolicy: 32 | TableName: !Ref DynamoDBTable 33 | Events: 34 | GetById: 35 | Type: Api # More info about API Event Source: https://github.com/awslabs/serverless-application-model/blob/master/versions/2016-10-31.md#api 36 | Properties: 37 | Path: /{id} 38 | Method: get 39 | 40 | DynamoDBTable: 41 | Type: AWS::DynamoDB::Table 42 | Properties: 43 | AttributeDefinitions: 44 | - AttributeName: pk 45 | AttributeType: S 46 | - AttributeName: sk 47 | AttributeType: S 48 | KeySchema: 49 | - AttributeName: pk 50 | KeyType: HASH 51 | - AttributeName: sk 52 | KeyType: RANGE 53 | BillingMode: PAY_PER_REQUEST 54 | StreamSpecification: 55 | StreamViewType: NEW_IMAGE 56 | Outputs: 57 | # ServerlessRestApi is an implicit API created out of Events key under Serverless::Function 58 | # Find out more about other implicit resources you can reference within SAM 59 | # https://github.com/awslabs/serverless-application-model/blob/master/docs/internals/generated_resources.rst#api 60 | Api: 61 | Description: "API Gateway endpoint URL for Prod stage for Hello World function" 62 | Value: !Sub "https://${ServerlessRestApi}.execute-api.${AWS::Region}.amazonaws.com/Prod/hello/" 63 | --------------------------------------------------------------------------------