tessl/golang-github-com--aws--aws-sdk-go-v2

AWS SDK for Go v2 with 130+ service clients, Request/Send pattern, and context support.

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AWS SDK for Go v2

Name: tessl/golang-github-com--aws--aws-sdk-go-v2
Author: tessl

Official AWS SDK for Go v2 (Developer Preview v0.4.0) with 130+ service clients. Features Request/Send pattern, context support, typed requests, and improved configuration.

Installation

dep ensure -add github.com/aws/aws-sdk-go-v2
# or: go get github.com/aws/aws-sdk-go-v2

Quick Start

import (
    "github.com/aws/aws-sdk-go-v2/aws"
    "github.com/aws/aws-sdk-go-v2/aws/external"
    "github.com/aws/aws-sdk-go-v2/service/s3"
)

// 1. Load config (from env/files/IAM)
cfg, _ := external.LoadDefaultAWSConfig()
cfg.Region = "us-east-1"

// 2. Create service client
svc := s3.New(cfg)

// 3. Create typed request
req := svc.ListBucketsRequest(&s3.ListBucketsInput{})

// 4. Send request
resp, _ := req.Send()
for _, b := range resp.Buckets {
    fmt.Println(*b.Name)
}

Complete Quick Start →

Core SDK Components

Component	Purpose	Reference
aws	Config, helpers, request infrastructure	Core →
aws/external	Load config from env/files/IAM	Config →
aws/awserr	AWS error codes and handling	Errors →
aws/endpoints	Region/endpoint resolution	Endpoints →
aws/signer/v4	SigV4 request signing	Signing →
service/*	130+ AWS service clients	Services →

Key APIs

Configuration Loading

// Package: aws/external
func LoadDefaultAWSConfig(configs ...Config) (aws.Config, error)
func WithSharedConfigProfile(profile string) Config
func WithRegion(region string) Config
func WithCredentialsProvider(provider aws.CredentialsProvider) Config
func WithMFATokenFunc(func() (string, error)) Config
func WithAssumeRoleCredentialOptions(func(*stscreds.AssumeRoleProvider)) Config

Service Client Pattern

// All 130+ services follow this pattern:
func New(config aws.Config) *<ServiceName>

// Examples:
func s3.New(config aws.Config) *S3
func dynamodb.New(config aws.Config) *DynamoDB
func ec2.New(config aws.Config) *EC2
func lambda.New(config aws.Config) *Lambda
func sqs.New(config aws.Config) *SQS
func sns.New(config aws.Config) *SNS

Request/Send Pattern

// All operations return typed requests:
func (c *Client) <Operation>Request(input *<Operation>Input) <Operation>Request

// Request methods:
func (r <Operation>Request) Send() (*<Operation>Output, error)
func (r <Operation>Request) Presign(expireTime time.Duration) (string, error)
func (r <Operation>Request) Paginate() <Operation>Paginator
func (r <Operation>Request) SetContext(ctx aws.Context)

Pointer Helpers

// Package: aws
// Create pointers:
func String(v string) *string
func Int64(v int64) *int64
func Int(v int) *int
func Bool(v bool) *bool
func Float64(v float64) *float64
func Time(v time.Time) *time.Time

// Dereference safely (returns zero value if nil):
func StringValue(v *string) string
func Int64Value(v *int64) int64
func IntValue(v *int) int
func BoolValue(v *bool) bool
func Float64Value(v *float64) float64
func TimeValue(v *time.Time) time.Time

Common Services Quick Reference

S3 (Object Storage)

func (c *S3) GetObjectRequest(input *GetObjectInput) GetObjectRequest
func (c *S3) PutObjectRequest(input *PutObjectInput) PutObjectRequest
func (c *S3) DeleteObjectRequest(input *DeleteObjectInput) DeleteObjectRequest
func (c *S3) DeleteObjectsRequest(input *DeleteObjectsInput) DeleteObjectsRequest
func (c *S3) CopyObjectRequest(input *CopyObjectInput) CopyObjectRequest
func (c *S3) HeadObjectRequest(input *HeadObjectInput) HeadObjectRequest
func (c *S3) ListObjectsV2Request(input *ListObjectsV2Input) ListObjectsV2Request
func (c *S3) ListObjectVersionsRequest(input *ListObjectVersionsInput) ListObjectVersionsRequest

S3 Complete API →

DynamoDB (NoSQL)

func (c *DynamoDB) GetItemRequest(input *GetItemInput) GetItemRequest
func (c *DynamoDB) PutItemRequest(input *PutItemInput) PutItemRequest
func (c *DynamoDB) UpdateItemRequest(input *UpdateItemInput) UpdateItemRequest
func (c *DynamoDB) DeleteItemRequest(input *DeleteItemInput) DeleteItemRequest
func (c *DynamoDB) QueryRequest(input *QueryInput) QueryRequest
func (c *DynamoDB) ScanRequest(input *ScanInput) ScanRequest
func (c *DynamoDB) BatchGetItemRequest(input *BatchGetItemInput) BatchGetItemRequest
func (c *DynamoDB) BatchWriteItemRequest(input *BatchWriteItemInput) BatchWriteItemRequest

EC2 (Compute)

func (c *EC2) RunInstancesRequest(input *RunInstancesInput) RunInstancesRequest
func (c *EC2) TerminateInstancesRequest(input *TerminateInstancesInput) TerminateInstancesRequest
func (c *EC2) DescribeInstancesRequest(input *DescribeInstancesInput) DescribeInstancesRequest
func (c *EC2) StartInstancesRequest(input *StartInstancesInput) StartInstancesRequest
func (c *EC2) StopInstancesRequest(input *StopInstancesInput) StopInstancesRequest
func (c *EC2) RebootInstancesRequest(input *RebootInstancesInput) RebootInstancesRequest

Lambda (Serverless)

func (c *Lambda) InvokeRequest(input *InvokeInput) InvokeRequest
func (c *Lambda) InvokeAsyncRequest(input *InvokeAsyncInput) InvokeAsyncRequest
func (c *Lambda) CreateFunctionRequest(input *CreateFunctionInput) CreateFunctionRequest
func (c *Lambda) UpdateFunctionCodeRequest(input *UpdateFunctionCodeInput) UpdateFunctionCodeRequest
func (c *Lambda) UpdateFunctionConfigurationRequest(input *UpdateFunctionConfigurationInput) UpdateFunctionConfigurationRequest
func (c *Lambda) DeleteFunctionRequest(input *DeleteFunctionInput) DeleteFunctionRequest
func (c *Lambda) ListFunctionsRequest(input *ListFunctionsInput) ListFunctionsRequest

SQS (Message Queue)

func (c *SQS) SendMessageRequest(input *SendMessageInput) SendMessageRequest
func (c *SQS) SendMessageBatchRequest(input *SendMessageBatchInput) SendMessageBatchRequest
func (c *SQS) ReceiveMessageRequest(input *ReceiveMessageInput) ReceiveMessageRequest
func (c *SQS) DeleteMessageRequest(input *DeleteMessageInput) DeleteMessageRequest
func (c *SQS) DeleteMessageBatchRequest(input *DeleteMessageBatchInput) DeleteMessageBatchRequest
func (c *SQS) ChangeMessageVisibilityRequest(input *ChangeMessageVisibilityInput) ChangeMessageVisibilityRequest

SNS (Pub/Sub)

func (c *SNS) PublishRequest(input *PublishInput) PublishRequest
func (c *SNS) SubscribeRequest(input *SubscribeInput) SubscribeRequest
func (c *SNS) UnsubscribeRequest(input *UnsubscribeInput) UnsubscribeRequest
func (c *SNS) CreateTopicRequest(input *CreateTopicInput) CreateTopicRequest
func (c *SNS) DeleteTopicRequest(input *DeleteTopicInput) DeleteTopicRequest
func (c *SNS) ListSubscriptionsRequest(input *ListSubscriptionsInput) ListSubscriptionsRequest

Request Features

Context & Timeout

ctx, cancel := context.WithTimeout(context.Background(), 30*time.Second)
defer cancel()

req := svc.GetObjectRequest(input)
req.SetContext(ctx)
resp, _ := req.Send() // Respects timeout/cancellation

Pagination

req := svc.ListObjectsV2Request(&s3.ListObjectsV2Input{
    Bucket: aws.String("my-bucket"),
})

p := req.Paginate()
for p.Next() {
    page := p.CurrentPage().(*s3.ListObjectsV2Output)
    for _, obj := range page.Contents {
        // Process object
    }
}
if err := p.Err(); err != nil {
    // Handle error
}

Presigned URLs

req := svc.GetObjectRequest(&s3.GetObjectInput{
    Bucket: aws.String("bucket"),
    Key:    aws.String("key"),
})
url, _ := req.Presign(15 * time.Minute) // Valid for 15 minutes

Error Handling

import "github.com/aws/aws-sdk-go-v2/aws/awserr"

resp, err := req.Send()
if err != nil {
    if aerr, ok := err.(awserr.Error); ok {
        fmt.Printf("Code: %s, Message: %s\n", aerr.Code(), aerr.Message())
        
        // Check for specific errors
        switch aerr.Code() {
        case s3.ErrCodeNoSuchBucket:
            // Handle missing bucket
        case s3.ErrCodeNoSuchKey:
            // Handle missing key
        }
        
        // Get HTTP status code
        if reqErr, ok := err.(awserr.RequestFailure); ok {
            fmt.Printf("Status: %d, RequestID: %s\n", 
                reqErr.StatusCode(), reqErr.RequestID())
        }
    }
}

High-Level Utilities

S3 Manager (Multipart Upload/Download)

// Package: service/s3/s3manager
func NewUploader(cfg aws.Config, options ...func(*Uploader)) *Uploader
func (u Uploader) Upload(input *UploadInput, options ...func(*Uploader)) (*UploadOutput, error)

func NewDownloader(cfg aws.Config, options ...func(*Downloader)) *Downloader
func (d Downloader) Download(w io.WriterAt, input *s3.GetObjectInput, options ...func(*Downloader)) (int64, error)

S3 Manager →

Configuration Patterns

Environment Variables

AWS_REGION=us-east-1
AWS_ACCESS_KEY_ID=AKID...
AWS_SECRET_ACCESS_KEY=SECRET...
AWS_SESSION_TOKEN=TOKEN...  # For temporary credentials

Shared Config Files

# ~/.aws/credentials
[default]
aws_access_key_id = AKID...
aws_secret_access_key = SECRET...

[production]
aws_access_key_id = AKID...
aws_secret_access_key = SECRET...

# ~/.aws/config
[default]
region = us-east-1

[profile production]
region = eu-west-1

Programmatic

cfg := aws.Config{
    Region:      "us-west-2",
    Credentials: aws.NewStaticCredentialsProvider("AKID", "SECRET", ""),
}

Important Notes for Agents

Pointer Usage

All optional fields use pointers: Use aws.String(), aws.Int64(), etc.
Check nil before dereferencing: Use aws.StringValue() for safety
Empty vs nil: nil omits field, empty pointer sends default value

Request Pattern

Requests are reusable: Can modify before sending
Requests are NOT thread-safe: Don't share across goroutines
Send() is blocking: Use goroutines for concurrent requests

Context Behavior

Context cancellation: Stops request mid-flight
Context timeout: Returns context.DeadlineExceeded
No context: Request has no timeout (uses HTTP client timeout)

Pagination

Always check p.Err(): Errors may occur mid-pagination
Current page type assertion: Cast to specific output type
Empty results: Next() returns false, check Err() to distinguish from error

Retry Behavior

Default: 3 attempts with exponential backoff
Retryable errors: 500s, throttling, network errors
Non-retryable: 400s (except throttling), authentication errors

Resources

Quick Start Guide - Setup and basic usage
Real-World Examples - Complete patterns with edge cases
Core SDK Reference - Config, helpers, credentials
S3 Reference - Complete S3 API
S3 Manager Reference - Multipart upload/download
Services Reference - All 130+ available services
Configuration Reference - Advanced config options
Request Reference - Request lifecycle and handlers
Credentials Reference - All credential providers
Endpoints Reference - Endpoint resolution
Signing Reference - SigV4 signing
Errors Reference - Error handling
Utilities Reference - ARN parsing, buffers

Common Patterns

Service Client Creation

cfg, _ := external.LoadDefaultAWSConfig()
svc := s3.New(cfg)

Making Requests

req := svc.GetObjectRequest(&s3.GetObjectInput{
    Bucket: aws.String("my-bucket"),
    Key:    aws.String("my-key"),
})
resp, err := req.Send()

With Context

ctx, cancel := context.WithTimeout(context.Background(), 30*time.Second)
defer cancel()
req.SetContext(ctx)

With Pagination

p := req.Paginate()
for p.Next() {
    page := p.CurrentPage().(*<OutputType>)
}
err := p.Err()

Error Handling

if err != nil {
    if aerr, ok := err.(awserr.Error); ok {
        switch aerr.Code() {
        case <ServiceName>.ErrCode<ErrorName>:
            // Handle specific error
        }
    }
}

For comprehensive examples and edge cases, see examples.

docs

examples

guides

reference

index.md

tile.json

tessl/golang-github-com--aws--aws-sdk-go-v2

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AWS SDK for Go v2

Installation

Quick Start

Core SDK Components

Key APIs

Configuration Loading

Service Client Pattern

Request/Send Pattern

Pointer Helpers

Common Services Quick Reference

S3 (Object Storage)

DynamoDB (NoSQL)

EC2 (Compute)

Lambda (Serverless)

SQS (Message Queue)

SNS (Pub/Sub)

Request Features

Context & Timeout

Pagination

Presigned URLs

Error Handling

High-Level Utilities

S3 Manager (Multipart Upload/Download)

Configuration Patterns

Environment Variables

Shared Config Files

Programmatic

Important Notes for Agents

Pointer Usage

Request Pattern

Context Behavior

Pagination

Retry Behavior

Resources

Common Patterns

Service Client Creation

Making Requests

With Context

With Pagination

Error Handling

index.mddocs/