Volcengine Sdk Generator

Volcengine SDK Code Generator

Generate complete, runnable Volcengine SDK code from natural-language descriptions, and answer SDK configuration questions.

Workflow

When a user describes a Volcengine API operation, follow these steps:

Step 1: Identify Target Service, Operation, and Advanced Configuration Needs

Parse the user's description to determine:

• Target service: which Volcengine service (e.g., ECS, VPC, TOS, billing)
• Target operation: what operation to perform (e.g., list instances, create a VPC, query billing)
• Target language: which programming language (Go, Python, PHP, Java, Node.js). If not specified, ask the user.
• Advanced configuration needs: whether the user mentions or the scenario implies any of the following:
• Retry: user mentions "retry", "fault tolerance", or the operation is a write/create type (prone to throttling)
• Timeout: user mentions "timeout", or the operation involves large data volumes (batch queries, file uploads)
• Credentials: user mentions "STS", "AssumeRole", "temporary credentials", "OIDC", or explicitly wants to avoid hardcoding AK/SK
• Proxy/network: user mentions "proxy" or "internal network"
• Debug mode: user mentions "debug" or "logging"
• Connection pooling: user mentions "connection pool", "high concurrency", or "pool"

If the user explicitly requests these, include the corresponding configuration in the generated code. If not explicitly requested but implied by the scenario (e.g., resource creation naturally warrants retry), include suggested configuration as comments.

Step 2: Query Service Metadata via Volcengine API Explorer

Use the following APIs to find the correct service code, version, and action name. This step is critical because guessing often produces incorrect code — the API Explorer is the authoritative source.

2a. Find the ServiceCode

Fetch the service catalog:

GET https://api.volcengine.com/api/common/explorer/services

Response structure:

{
  "Result": {
    "Categories": [
      {
        "CategoryName": "...",
        "Services": [
          {
            "ServiceCn": "Cloud Server",
            "ServiceCode": "ecs",
            "Product": "ECS",
            "IsSdkAvailable": true,
            "RegionType": "regional"
          }
        ]
      }
    ]
  }
}

Match the user's intent to the correct ServiceCode based on ServiceCn, Product, and category name.

2b. Find the API version

GET https://api.volcengine.com/api/common/explorer/versions?ServiceCode={ServiceCode}

Response:

{
  "Result": {
    "Versions": [
      {
        "ServiceCode": "billing",
        "Version": "2022-01-01",
        "IsDefault": 0
      }
    ]
  }
}

Use the version with IsDefault == 1. If no default version exists, use the latest available.

2c. Find the Action name

GET https://api.volcengine.com/api/common/explorer/apis?ServiceCode={ServiceCode}&Version={Version}&APIVersion={Version}

Response:

{
  "Result": {
    "Groups": [
      {
        "Name": "Instance",
        "Apis": [
          {
            "Action": "DescribeInstances",
            "NameCn": "Query instance list",
            "Description": "..."
          }
        ]
      }
    ]
  }
}

Match user intent using the Action name and NameCn (Chinese name).

2c-alt: Search API (when direct lookup fails)

If the service catalog or API list cannot clearly match the user's description — for example, the user uses vague terms, Chinese names that don't map directly to a ServiceCode, or the API list doesn't seem to contain what the user wants — use the search API as a fallback:

GET https://api.volcengine.com/api/common/search/all?Query={URL-encoded search term}&Channel=api&Limit=10

Search terms can be Chinese or English — use whichever best matches the user's description.

Response structure:

{
  "Result": {
    "List": [
      {
        "BizInfo": {
          "Action": "ListProjects",
          "ServiceCn": "Access Control",
          "ServiceCode": "iam",
          "Version": "2021-08-01"
        },
        "Highlight": [
          {"Field": "title", "Summary": "Get <em>project</em> <em>list</em>"}
        ]
      }
    ],
    "Total": 200
  }
}

Select the best match based on ServiceCn, Action, and highlight text, then continue to step 2d.

The search API is particularly useful when:

• The user describes the operation in natural language but doesn't know which service owns it
• A service has too many APIs to browse manually
• The description spans multiple services (search returns results across all services)

2d. Get full API parameter details

GET https://api.volcengine.com/api/common/explorer/api-swagger?ServiceCode={ServiceCode}&Version={Version}&APIVersion={Version}&ActionName={Action}

Returns the full Swagger/OpenAPI specification, including:

• HTTP method (GET/POST)
• All request parameters with types, required flags, and descriptions
• Response structure
• Constraints and validation rules
• `x-demo` field: contains requestDemo and responseDemo with official examples

Read this specification carefully — it is essential for generating accurate code.

2e. Extract parameter example values (from x-demo requestDemo)

The info.x-demo array in the Swagger response contains requestDemo — official request examples. Extract realistic parameter values from these to populate generated code.

Extraction process: 1. Locate info.x-demo[0].requestDemo and parse the request body JSON 2. Use requestDemo values as example values in generated code — they are more accurate and realistic than invented values 3. For masked values (e.g., cc5silum********), keep the masked format and add a comment prompting the user to replace with real values 4. If a parameter value is a JSON string (e.g., a Config field), format it clearly and comment each sub-field

Example: for VKE CreateAddon, requestDemo contains:

{
    "ClusterId": "cc5silum********",
    "Name": "ingress-nginx",
    "DeployMode": "Unmanaged",
    "DeployNodeType": ["VirtualNode"],
    "Config": "{\"Replica\":1,\"Resource\":{\"Request\":{\"Cpu\":\"0.25\",\"Memory\":\"512Mi\"},\"Limit\":{\"Cpu\":\"0.5\",\"Memory\":\"1024Mi\"}},\"PrivateNetwork\":{\"SubnetId\":\"subnet-2d61qn69iji****\",\"IpVersion\":\"IPV4\"}}"
}

Use these example values directly instead of empty placeholders.

2f. Retrieve detailed configuration for complex parameters

Some parameter description fields contain documentation links (e.g., https://www.volcengine.com/docs/...) pointing to detailed configuration guides. For complex parameters, fetch these links for more information:

When to consult documentation:

• The parameter value is a JSON string with a "see detailed configuration" reference in the description (e.g., VKE Config)
• The parameter is a nested structure whose sub-field format is documented externally
• The enum values have unclear meanings that are explained in the documentation

Processing flow: 1. Check whether the parameter description contains a volcengine.com/docs link 2. If so, use WebFetch to retrieve the linked page and extract configuration details relevant to the parameter 3. Incorporate documentation examples into the generated code as comments or structured parameters 4. If the documentation is inaccessible, fall back to requestDemo example values

2g. Determine required and recommended parameters

Required-field detection relies on multiple sources, not just the required array:

1. Explicitly required: listed in the Swagger required array 2. Implied by description: the description contains phrases like "must specify", "required", or equivalent 3. Logically required: semantically essential even if not formally marked (e.g., instance type and network config when creating resources) 4. Conditionally required: the description states "required when X=Y" — if the user's scenario matches, include it

Parameter value priority: 1. requestDemo example values (highest priority): use the official examples directly 2. `example` field: individual parameter example values from the Swagger spec 3. enum values: pick the most common or general-purpose option 4. Documentation recommendations: values extracted from linked docs 5. Industry conventions: reasonable defaults following cloud-computing norms (e.g., 172.16.0.0/16 for CIDR, descriptive names for instances)

Step 3: Consult SDK Configuration References (as needed)

If Step 1 identified advanced configuration needs, read the corresponding reference file for the target language to get accurate configuration code:

These files contain verified code snippets for retry, timeout, credentials, proxy, connection pooling, and debug configuration. Use these patterns directly rather than writing from memory — SDK configuration varies significantly across languages, and the reference files ensure accuracy.

Step 4: Generate Complete SDK Code

Generate a complete, runnable code example following these rules:

General Rules (all languages)

1. Authentication: read AK/SK from environment variables VOLCENGINE_ACCESS_KEY and VOLCENGINE_SECRET_KEY by default. If the user needs a different auth method (STS, AssumeRole, OIDC), use the corresponding pattern from the reference files. The exact reading mechanism varies by language — see each language section and the reference files. 2. Region: default to cn-beijing for regional services. Add a comment noting that users can change this. 3. Required parameters: include all required parameters (sources per step 2g), using realistic example values from requestDemo or example fields. Add a comment next to each value explaining its meaning and source. 4. Parameter value quality: values must follow realistic formats and business semantics, not simple placeholders:

• Instance IDs: use masked format like i-abc123****** (from requestDemo)
• CIDRs: use reasonable ranges like 172.16.0.0/16
• Enums: use the most common option
• Nested JSON configs: expand into readable multi-line format with per-field comments

5. Complex parameter handling: for parameters whose value is a JSON string (e.g., VKE Config), build a struct/dict first and then serialize to JSON, rather than hardcoding a long string. This makes the code more readable and easier to modify. 6. Optional parameters: include commonly-used optional parameters (e.g., pagination) as commented-out lines with explanations. 7. Error handling: include standard error handling for the target language. 8. Output: print the response in a readable format (e.g., formatted JSON). 9. Comments: add a header comment describing the code's purpose. Add inline comments for non-obvious parameters. Match comment language to the user's prompt language. 10. Advanced configuration integration: when the user has advanced config needs, weave the configuration naturally into the main code (not as a separate block), producing a single runnable file:

• Retry: add retry settings during client/config initialization, with comments explaining defaults and tunable parameters
• Timeout: set global timeout during client initialization; show per-request timeout usage if needed
• Credentials: replace the default AK/SK auth code with the user-specified method (STS, AssumeRole, etc.)
• Proxy: add proxy settings in client configuration
• Debug: enable debug mode in client configuration
• Connection pooling: set pool parameters in client configuration

Go

The Go SDK uses {Action}Input structs (not Request). Services are instantiated via {service}.New(sess).

package main

import (
    "fmt"
    "os"
    "github.com/volcengine/volcengine-go-sdk/service/{service}"
    "github.com/volcengine/volcengine-go-sdk/volcengine"
    "github.com/volcengine/volcengine-go-sdk/volcengine/credentials"
    "github.com/volcengine/volcengine-go-sdk/volcengine/session"
)

func main() {
    ak := os.Getenv("VOLCENGINE_ACCESS_KEY")
    sk := os.Getenv("VOLCENGINE_SECRET_KEY")
    region := "cn-beijing"

    config := volcengine.NewConfig().
        WithRegion(region).
        WithCredentials(credentials.NewStaticCredentials(ak, sk, ""))

    // [Advanced config — add as needed, see references/sdk-integration-go.md]
    // Retry: config.WithMaxRetries(5)
    // Timeout: config.WithHTTPClient(&http.Client{Timeout: 60 * time.Second})
    // Proxy: config.WithHTTPProxy("http://proxy:8080")
    // Debug: config.WithDebug(true)

    sess, err := session.NewSession(config)
    if err != nil {
        panic(err)
    }
    svc := {service}.New(sess)

    input := &{service}.{Action}Input{
        // Set required parameters here
    }
    resp, err := svc.{Action}(input)
    if err != nil {
        panic(err)
    }
    fmt.Println(resp)
}

Key points:

• Package path: github.com/volcengine/volcengine-go-sdk/service/{service} (lowercase, e.g., billing, ecs, vpc)
• Config chain: volcengine.NewConfig().WithRegion(region).WithCredentials(credentials.NewStaticCredentials(ak, sk, ""))
• Session: session.NewSession(config) (returns session and error)
• Service client: {service}.New(sess) (e.g., billing.New(sess), ecs.New(sess))
• Request struct: {Action}Input (e.g., ListAvailableInstancesInput, DescribeInstancesInput)
• Method: svc.{Action}(input), PascalCase action name

Python

The Python SDK uses {SERVICE}Api (uppercase service name) and {Action}Request models.

from __future__ import print_function
import os
import volcenginesdkcore
import volcenginesdk{service}
from volcenginesdkcore.rest import ApiException

if __name__ == '__main__':
    configuration = volcenginesdkcore.Configuration()
    configuration.ak = os.environ.get("VOLCENGINE_ACCESS_KEY")
    configuration.sk = os.environ.get("VOLCENGINE_SECRET_KEY")
    configuration.region = "cn-beijing"

    # [Advanced config — add as needed, see references/sdk-integration-python.md]
    # Retry: configuration.max_retry_attempts = 5
    # Timeout: configuration.connection_timeout = 10; configuration.read_timeout = 60
    # Proxy: configuration.proxy = "http://proxy:8080"
    # Debug: configuration.debug = True

    volcenginesdkcore.Configuration.set_default(configuration)

    api_instance = volcenginesdk{service}.{SERVICE}Api()
    request = volcenginesdk{service}.{Action}Request(
        # Set required parameters here
    )

    try:
        resp = api_instance.{action_snake_case}(request)
        print(resp)
    except ApiException as e:
        print("API exception: %s\n" % e)

Key points:

• Package: volcenginesdkcore + volcenginesdk{service} (all lowercase, no separators, e.g., volcenginesdkbilling, volcenginesdkecs)
• Config: volcenginesdkcore.Configuration(), set .ak, .sk, .region, then set_default()
• API class: volcenginesdk{service}.{SERVICE}Api() — service name ALL CAPS (e.g., BILLINGApi, ECSApi, VPCApi)
• Request class: volcenginesdk{service}.{Action}Request(...) (PascalCase, e.g., ListAvailableInstancesRequest)
• Method: api_instance.{action_snake_case}(request) — snake_case (e.g., list_available_instances, describe_instances)
• Exception: from volcenginesdkcore.rest import ApiException

Java

The Java SDK uses {ServiceName}Api and {Action}Request models under com.volcengine.{service}.

package com.volcengine.sample;

import com.volcengine.ApiClient;
import com.volcengine.ApiException;
import com.volcengine.sign.Credentials;
import com.volcengine.{service}.{ServiceName}Api;
import com.volcengine.{service}.model.*;

public class Example {
    public static void main(String[] args) throws Exception {
        String ak = System.getenv("VOLCENGINE_ACCESS_KEY");
        String sk = System.getenv("VOLCENGINE_SECRET_KEY");
        String region = "cn-beijing";

        ApiClient apiClient = new ApiClient()
                .setCredentials(Credentials.getCredentials(ak, sk))
                .setRegion(region);

        // [Advanced config — add as needed, see references/sdk-integration-java.md]
        // Retry: apiClient.setRetrySettings(new RetrySettings().setMaxAttempts(5));
        // Timeout: apiClient.setConnectionTimeout(5000); apiClient.setReadTimeout(30000);
        // Proxy: apiClient.setHttpProxy("http://proxy:8080");
        // Debug: apiClient.setDebugging(true);

        {ServiceName}Api api = new {ServiceName}Api(apiClient);

        {Action}Request request = new {Action}Request();
        // request.setParamName(value);

        try {
            {Action}Response resp = api.{actionCamelCase}(request);
            System.out.println(resp);
        } catch (ApiException e) {
            System.out.println(e.getResponseBody());
        }
    }
}

Key points:

• Package: com.volcengine.{service} (lowercase, e.g., com.volcengine.billing, com.volcengine.ecs)
• ApiClient: new ApiClient().setCredentials(Credentials.getCredentials(ak, sk)).setRegion(region)
• API class: {ServiceName}Api (PascalCase, e.g., BillingApi, EcsApi) — constructor takes apiClient
• Request class: {Action}Request (e.g., ListAvailableInstancesRequest) — set params via setters
• Method: api.{actionCamelCase}(request) — camelCase (e.g., listAvailableInstances, describeInstances)
• Exception: ApiException, use e.getResponseBody() for details

Node.js

The Node.js SDK uses a command pattern: {SERVICE}Client + {Action}Command.

import { {SERVICE}Client, {Action}Command } from "@volcengine/{service}";

// Automatically reads VOLCENGINE_ACCESS_KEY and VOLCENGINE_SECRET_KEY from env
const client = new {SERVICE}Client({
    region: "cn-beijing",
    // [Advanced config — add as needed, see references/sdk-integration-nodejs.md]
    // maxRetries: 5,                          // retry count
    // autoRetry: false,                       // disable auto-retry
    // httpOptions: { timeout: 30000 },        // timeout (ms)
    // httpOptions: { proxy: { protocol: "http", host: "127.0.0.1", port: 8888 } },  // proxy
});

async function main() {
    try {
        const command = new {Action}Command({
            // Set required parameters here
        });
        const response = await client.send(command);
        console.log(JSON.stringify(response, null, 2));
    } catch (error) {
        console.error("Error:", error);
    }
}

main();

Key points:

• Package: @volcengine/{service} (lowercase, e.g., @volcengine/ecs, @volcengine/vpc)
• Client: {SERVICE}Client (ALL CAPS service name, e.g., ECSClient, VPCClient)
• Command: {Action}Command (PascalCase, e.g., DescribeInstancesCommand, CreateVpcCommand)
• Invocation: client.send(command) — async, returns a Promise
• Auth: automatically reads VOLCENGINE_ACCESS_KEY and VOLCENGINE_SECRET_KEY from env; can also pass accessKeyId/secretAccessKey in the client constructor

PHP

The PHP SDK uses classes under the \Volcengine\{Service}\ namespace.

<?php
require_once(__DIR__ . '/vendor/autoload.php');

$config = \Volcengine\Common\Configuration::getDefaultConfiguration()
    ->setAk(getenv("VOLCENGINE_ACCESS_KEY"))
    ->setSk(getenv("VOLCENGINE_SECRET_KEY"))
    ->setRegion("cn-beijing");

// [Advanced config — add as needed, see references/sdk-integration-php.md]
// Proxy and timeout are configured via GuzzleHttp\Client options
$httpClient = new GuzzleHttp\Client([
    // 'proxy' => 'http://proxy:8080',              // proxy
    // 'timeout' => 60,                              // request timeout (seconds)
    // 'connect_timeout' => 10,                      // connection timeout (seconds)
]);

$apiInstance = new \Volcengine\{Service}\Api\{SERVICE}Api(
    $httpClient,
    $config
);

$request = new \Volcengine\{Service}\Model\{Action}Request();
// $request->setParamName("value");

try {
    $resp = $apiInstance->{actionCamelCase}($request);
    print_r($resp);
} catch (Exception $e) {
    echo 'API exception: ', $e->getMessage(), PHP_EOL;
}

Key points:

• Config: \Volcengine\Common\Configuration::getDefaultConfiguration()->setAk()->setSk()->setRegion()
• API class: \Volcengine\{Service}\Api\{SERVICE}Api — namespace uses PascalCase Service (e.g., Billing), class name uses ALL CAPS (e.g., BILLINGApi)
• Constructor: takes GuzzleHttp\Client() and $config
• Request class: \Volcengine\{Service}\Model\{Action}Request (e.g., \Volcengine\Billing\Model\ListAvailableInstancesRequest)
• Set params via setters: $request->setProduct("value")
• Method: $apiInstance->{actionCamelCase}($request) (e.g., listAvailableInstances)

Step 5: Present Results

After generating code:

1. Display the complete code in a code block with the correct language tag 2. List the dependencies the user needs to install (go get, pip install, npm install, composer require, Maven/Gradle coordinates) 3. Remind the user to set environment variables:

   export VOLCENGINE_ACCESS_KEY="your-access-key"
   export VOLCENGINE_SECRET_KEY="your-secret-key"

4. Note important constraints from the API spec (rate limits, required permissions, data range limits, etc.) 5. If the code includes advanced configuration, briefly explain each setting's purpose, defaults, and tuning advice. For example:

• "Retry defaults to 3 attempts, covers network errors and throttling — adjust via WithMaxRetries"
• "Connection timeout defaults to 30s; consider increasing for large batch queries"

Answering SDK Configuration Questions

When the user asks how to configure or use the Volcengine SDK (rather than generate API call code), follow this approach:

Step 1: Identify the User's Need

Common configuration topics:

• Authentication: AK/SK, STS Token, AssumeRole, OIDC, SAML
• Retry: enable/disable, max attempts, backoff strategy, custom retry conditions
• Timeout: connection timeout, read timeout, per-request timeout
• Proxy: HTTP/HTTPS proxy configuration
• Endpoint: custom endpoint, region-based resolution, dual-stack (IPv6)
• SSL/HTTPS: disable SSL verification, TLS version, HTTP vs. HTTPS
• Connection pooling: pool size, keep-alive, idle connections
• Debug: debug mode, logging, middleware
• Error handling: exception types, retryable vs. non-retryable errors
• Environment variables: supported env vars per SDK

Step 2: Consult the Reference Documentation

Read the reference file for the user's target language:

These files contain concise code examples for each major configuration topic. Read the relevant file and answer with accurate, copy-paste-ready code.

If the user's question is not covered in the reference file or requires more detail, fetch the full upstream documentation from GitHub:

Step 3: Provide a Clear Answer

• Show complete, runnable code snippets demonstrating the configuration
• Explain each setting's purpose and default value
• Mention caveats (e.g., "disabling SSL verification is only appropriate in test environments")
• If the user has not specified a language, ask which one they are using
• Match the answer language to the user's prompt language

Important Notes

• Always fetch data from the API Explorer — Volcengine APIs are updated frequently, so the Explorer is the authoritative source. Do not rely on memory.
• If the user's description is ambiguous (could map to multiple services or operations), list the options and ask for confirmation.
• If a service has IsSdkAvailable: false, inform the user that the official SDK may not yet support this service, and provide a raw HTTP request example as an alternative.
• For regional services, remind the user to change the region setting if their resources are not in cn-beijing.

Go SDK Integration Reference

Source: https://github.com/volcengine/volcengine-go-sdk/blob/master/SDK_Integration.md

Requirements

Go 1.14+ (1.18+ for Ark service). Use go mod for dependency management.

Authentication

AK/SK

ak := os.Getenv("VOLCENGINE_ACCESS_KEY")
sk := os.Getenv("VOLCENGINE_SECRET_KEY")
config := volcengine.NewConfig().
    WithRegion("cn-beijing").
    WithCredentials(credentials.NewStaticCredentials(ak, sk, ""))
sess, _ := session.NewSession(config)

Env vars: VOLCSTACK_ACCESS_KEY_ID, VOLCSTACK_SECRET_ACCESS_KEY

STS Token

config := volcengine.NewConfig().
    WithRegion("cn-beijing").
    WithCredentials(credentials.NewStaticCredentials(ak, sk, sessionToken))

STS AssumeRole

config := volcengine.NewConfig().
    WithRegion("cn-beijing").
    WithCredentials(credentials.NewAssumeRoleCredentials(
        ak, sk,
        "trn:iam::accountId:role/roleName",
        "sessionName",
        3600,    // durationSeconds
    ))

STS AssumeRoleWithOIDC (file-based)

config := volcengine.NewConfig().
    WithRegion("cn-beijing").
    WithCredentials(credentials.NewOIDCRoleCredentials(
        ak, sk,
        "trn:iam::accountId:role/roleName",
        "trn:iam::accountId:oidc-provider/providerName",
        "/path/to/oidc-token-file",
        "sessionName",
        3600,
    ))

Endpoint Configuration

// Custom endpoint
config.WithEndpoint("custom-endpoint.volcengineapi.com")

// Custom region
config.WithRegion("cn-shanghai")

// DualStack (IPv6)
config.WithUseDualStack(true)

HTTP Connection Pool

// Default: 100 max idle connections, 90s timeout
// Customize via custom http.Client
httpClient := &http.Client{
    Transport: &http.Transport{
        MaxIdleConns:    200,
        IdleConnTimeout: 120 * time.Second,
    },
}
config.WithHTTPClient(httpClient)

SSL / HTTPS

// Disable SSL (use HTTP)
config.WithDisableSSL(true)

// Custom TLS config
tlsConfig := &tls.Config{
    MinVersion: tls.VersionTLS12,
    MaxVersion: tls.VersionTLS13,
}

Proxy

config.WithHTTPProxy("http://proxy:8080")
config.WithHTTPSProxy("https://proxy:8080")
// Also reads env vars: http_proxy, https_proxy

Timeouts

// Global client-level (default: 30s connection)
config.WithHTTPClient(&http.Client{
    Timeout: 60 * time.Second,
})

// Per-API timeout via context (use {Action}WithContext methods)
ctx, cancel := context.WithTimeout(context.Background(), 30*time.Second)
defer cancel()
resp, err := svc.DescribeInstancesWithContext(ctx, input)

Retry

// Default: 3 retries for network errors
// Disable retry
config.WithMaxRetries(0)

// Custom max retries
config.WithMaxRetries(5)

// Custom retry error codes (per-request)
input.SetRetryableErrorCodes([]string{"Throttling", "ResourceIsBusy"})

Debugging

config.WithDebug(true)
// Custom log writer
config.WithLogWriter(os.Stderr)

Java SDK Integration Reference

Source: https://github.com/volcengine/volcengine-java-sdk/blob/master/SDK_Integration.md

Requirements

Java 1.8.0_131+. For Java 9+, add javax.annotation-api dependency.

Authentication

AK/SK

String ak = System.getenv("VOLCENGINE_ACCESS_KEY");
String sk = System.getenv("VOLCENGINE_SECRET_KEY");
ApiClient apiClient = new ApiClient()
        .setCredentials(Credentials.getCredentials(ak, sk))
        .setRegion("cn-beijing");

STS Token

String ak = System.getenv("VOLCENGINE_ACCESS_KEY");
String sk = System.getenv("VOLCENGINE_SECRET_KEY");
String token = System.getenv("VOLCENGINE_SESSION_TOKEN");
ApiClient apiClient = new ApiClient()
        .setCredentials(Credentials.getCredentials(ak, sk, token))
        .setRegion("cn-beijing");

STS AssumeRole

ApiClient apiClient = new ApiClient();
apiClient.setCredentials(Credentials.getAssumeRoleCredentials(
        ak, sk,
        "trn:iam::accountId:role/roleName",
        "sessionName",
        3600,    // durationSeconds
        null     // policy (optional)
));
apiClient.setRegion("cn-beijing");

Endpoint Configuration

// Custom endpoint
apiClient.setEndPoint("custom-endpoint.volcengineapi.com");

// Custom region (auto-resolves endpoint)
apiClient.setRegion("cn-shanghai");

// DualStack (IPv6)
apiClient.setUseDualStack(true);

HTTP Connection Pool

// Default: 5 idle connections, 5 min keep-alive
apiClient.setMaxIdleConns(10);
apiClient.setKeepAliveDurationMs(300000);

SSL / HTTPS

// Disable SSL verification (testing only)
apiClient.setVerifyingSsl(false);

// Use HTTP instead of HTTPS
apiClient.setDisableSSL(true);

Proxy

apiClient.setHttpProxy("http://proxy:8080");
apiClient.setHttpsProxy("https://proxy:8080");
// Also supports env vars: http_proxy, https_proxy

Timeouts

// All in milliseconds, default 10000 (10s)
apiClient.setConnectionTimeout(5000);
apiClient.setReadTimeout(30000);
apiClient.setWriteTimeout(30000);

Retry

// Retry is enabled by default with exponential backoff
// Configure retry attempts
apiClient.setRetrySettings(new RetrySettings()
        .setMaxAttempts(5)
        .setMinDelay(300)       // ms
        .setMaxDelay(300000)    // ms
);

// Disable retry
apiClient.setRetrySettings(new RetrySettings().setMaxAttempts(0));

// Custom retry error codes
apiClient.setRetrySettings(new RetrySettings()
        .setRetryableErrorCodes(Arrays.asList("Throttling", "ResourceIsBusy"))
);

Debugging

// Enable debug logging (uses SLF4J)
apiClient.setDebugging(true);
// Configure logger: com.volcengine.sdkcore

Node.js SDK Integration Reference

Source: https://github.com/volcengine/volcengine-nodejs-sdk/blob/master/SDK_Integration.md

Requirements

Node.js >= 18. Install via pnpm/npm/yarn.

pnpm add @volcengine/sdk-core
pnpm add @volcengine/ecs  # service-specific package

Authentication

Credential priority: Code config > Environment variables > Config file (~/.volc/config)

AK/SK

// Method 1: Code (not recommended for plain text)
const client = new EcsClient({
    accessKeyId: "YOUR_AK",
    secretAccessKey: "YOUR_SK",
    region: "cn-beijing",
});

// Method 2: Environment variables (recommended)
// export VOLCSTACK_ACCESS_KEY_ID="YOUR_AK"
// export VOLCSTACK_SECRET_ACCESS_KEY="YOUR_SK"
const client = new EcsClient({ region: "cn-beijing" });

// Method 3: Config file (~/.volc/config)
// { "VOLC_ACCESSKEY": "AK", "VOLC_SECRETKEY": "SK" }

STS Token

const client = new EcsClient({
    accessKeyId: "TEMP_AK",
    secretAccessKey: "TEMP_SK",
    sessionToken: "SESSION_TOKEN",
    region: "cn-beijing",
});
// Or via env: VOLCSTACK_SESSION_TOKEN

STS AssumeRole

const client = new EcsClient({
    region: "cn-beijing",
    assumeRoleParams: {
        accessKeyId: "SUB_ACCOUNT_AK",
        secretAccessKey: "SUB_ACCOUNT_SK",
        roleName: "role123",
        accountId: "2110400000",
        region: "cn-beijing",
        host: "sts.volcengineapi.com",
        durationSeconds: 3600,
        policy: '{"Statement":[...]}',  // optional
        tags: [{ Key: "project", Value: "test" }],  // optional
    },
});

Endpoint Configuration

// Custom endpoint (highest priority)
const client = new EcsClient({ host: "open.volcengineapi.com" });

// Custom region (auto-resolves endpoint)
const client = new EcsClient({ region: "cn-shanghai" });

// DualStack (IPv6) - suffix changes to volcengine-api.com
const client = new EcsClient({ region: "cn-beijing", useDualStack: true });

// Custom bootstrap region list
const client = new EcsClient({
    region: "my-private-region",
    customBootstrapRegion: { "my-private-region": {} },
});
// Or via env: VOLC_BOOTSTRAP_REGION_LIST_CONF=/path/to/regions.conf

Endpoint Resolution Rules

Network Configuration

// Protocol (default: https)
const client = new EcsClient({ protocol: "http" });

// Proxy
const client = new EcsClient({
    httpOptions: {
        proxy: { protocol: "http", host: "127.0.0.1", port: 8888 },
    },
});
// Or via env: VOLC_PROXY_PROTOCOL, VOLC_PROXY_HOST, VOLC_PROXY_PORT

// Ignore SSL verification (testing only)
const client = new EcsClient({ httpOptions: { ignoreSSL: true } });

// Connection pool
const client = new EcsClient({
    httpOptions: {
        pool: {
            keepAlive: true,
            keepAliveMsecs: 1000,
            maxSockets: 50,
            maxFreeSockets: 10,
        },
    },
});

Timeouts

// Client-level (default: 30000ms)
const client = new EcsClient({ httpOptions: { timeout: 5000 } });

// Request-level (overrides client)
await client.send(command, { timeout: 30000 });

Retry

// Default: 4 attempts (1 initial + 3 retries)
// Retries on: network errors, HTTP 429/500/502/503/504

// Custom max retries
const client = new EcsClient({ maxRetries: 5 });

// Disable retry
const client = new EcsClient({ autoRetry: false });

// Backoff strategies
import { StrategyName } from "@volcengine/sdk-core";
const client = new EcsClient({
    strategyName: StrategyName.ExponentialWithRandomJitterBackoffStrategy, // default
});
// Options: NoBackoffStrategy, ExponentialBackoffStrategy, ExponentialWithRandomJitterBackoffStrategy

// Custom retry strategy
const client = new EcsClient({
    retryStrategy: {
        minRetryDelay: 500,
        maxRetryDelay: 20000,
        retryIf: (error) => {
            if (error.data?.ResponseMetadata?.Error?.Code === "ResourceIsBusy") return true;
            return false;
        },
        delay: (attemptNumber) => 1000,
    },
});

Exception Handling

import { HttpRequestError } from "@volcengine/sdk-core";

try {
    await client.send(command);
} catch (error) {
    if (error instanceof HttpRequestError) {
        if (error.status !== undefined) {
            if (error.status === 0) {
                // SSL error
            } else if (error.data?.ResponseMetadata?.Error) {
                const { Code, Message } = error.data.ResponseMetadata.Error;
                const { RequestId } = error.data.ResponseMetadata;
                // API error
            }
        } else if (error.name === "NetworkError") {
            // Network error (timeout, DNS, connection refused)
        }
    }
}

Resource Cleanup

client.destroy();  // Release network connections before app exit

Debugging

// Add logging middleware
client.middlewareStack.add(
    (next, context) => async (args) => {
        console.log("Request:", args.request.method, args.request.host);
        const result = await next(args);
        console.log("Response:", result.response?.status);
        return result;
    },
    { step: "finalizeRequest", name: "LogMiddleware", priority: 10 }
);

Environment Variables

PHP SDK Integration Reference

Source: https://github.com/volcengine/volcengine-php-sdk/blob/main/SDK_Integration.md

Requirements

PHP >= 5.5. Install via Composer.

Authentication

AK/SK

$config = \Volcengine\Common\Configuration::getDefaultConfiguration()
    ->setAk(getenv("VOLCENGINE_ACCESS_KEY"))
    ->setSk(getenv("VOLCENGINE_SECRET_KEY"))
    ->setRegion("cn-beijing");

STS Token

$config = \Volcengine\Common\Configuration::getDefaultConfiguration()
    ->setAk("TEMP_AK")
    ->setSk("TEMP_SK")
    ->setSessionToken("SESSION_TOKEN")
    ->setRegion("cn-beijing");

STS AssumeRole

$config = \Volcengine\Common\Configuration::getDefaultConfiguration()
    ->setAk("SUB_ACCOUNT_AK")
    ->setSk("SUB_ACCOUNT_SK")
    ->setRegion("cn-beijing")
    ->setAssumeRoleTrn("trn:iam::accountId:role/roleName")
    ->setAssumeRoleSessionName("session-name")
    ->setAssumeRoleDurationSeconds(3600);

Endpoint Configuration

// Custom endpoint
$config->setHost("custom-endpoint.volcengineapi.com");

// Custom region (auto-resolves endpoint)
$config->setRegion("cn-shanghai");

// DualStack (IPv6)
$config->setUseDualStack(true);

SSL / HTTPS

// Use HTTP instead of HTTPS
$config->setScheme("http");

// Disable SSL verification (testing only)
$config->setVerifySsl(false);

// Custom TLS version
$apiInstance = new \Volcengine\Ecs\Api\ECSApi(
    new GuzzleHttp\Client([
        'curl' => [CURLOPT_SSLVERSION => CURL_SSLVERSION_TLSv1_2],
    ]),
    $config
);

Proxy

$apiInstance = new \Volcengine\Ecs\Api\ECSApi(
    new GuzzleHttp\Client([
        'proxy' => 'http://proxy:8080',
    ]),
    $config
);

Notes

The PHP SDK documentation does not currently cover retry, timeout, or logging configuration. For the latest details, see: https://github.com/volcengine/volcengine-php-sdk/blob/main/SDK_Integration.md

Python SDK Integration Reference

Source: https://github.com/volcengine/volcengine-python-sdk/blob/master/SDK_Integration.md

Requirements

Python >= 2.7 (Python 3.6+ for Ark runtime).

Authentication

AK/SK

import volcenginesdkcore

configuration = volcenginesdkcore.Configuration()
configuration.ak = os.environ.get("VOLCENGINE_ACCESS_KEY")
configuration.sk = os.environ.get("VOLCENGINE_SECRET_KEY")
configuration.region = "cn-beijing"
volcenginesdkcore.Configuration.set_default(configuration)

STS Token

configuration = volcenginesdkcore.Configuration()
configuration.ak = "TEMP_AK"
configuration.sk = "TEMP_SK"
configuration.session_token = "SESSION_TOKEN"
configuration.region = "cn-beijing"
volcenginesdkcore.Configuration.set_default(configuration)

STS AssumeRole

configuration = volcenginesdkcore.Configuration()
configuration.ak = "SUB_ACCOUNT_AK"
configuration.sk = "SUB_ACCOUNT_SK"
configuration.region = "cn-beijing"
configuration.assume_role_trn = "trn:iam::accountId:role/roleName"
configuration.assume_role_session_name = "session-name"
configuration.assume_role_duration_seconds = 3600
volcenginesdkcore.Configuration.set_default(configuration)

STS AssumeRoleWithOIDC / SAML

# OIDC
configuration.assume_role_with_oidc_trn = "trn:iam::accountId:role/roleName"
configuration.assume_role_with_oidc_provider = "trn:iam::accountId:oidc-provider/providerName"
configuration.assume_role_with_oidc_token = "oidc-token"

# SAML
configuration.assume_role_with_saml_trn = "trn:iam::accountId:role/roleName"
configuration.assume_role_with_saml_principal = "trn:iam::accountId:saml-provider/providerName"
configuration.assume_role_with_saml_assertion = "saml-assertion"

Endpoint Configuration

# Custom endpoint
configuration.host = "custom-endpoint.volcengineapi.com"

# Custom region (auto-resolves endpoint)
configuration.region = "cn-shanghai"

# DualStack (IPv6)
configuration.use_dual_stack = True

Connection Pool

# Default: 4 pools, maxsize = cpu_count * 5
configuration.connection_pool_maxsize = 20
configuration.connection_pools_count = 8

SSL / HTTPS

# Use HTTP instead of HTTPS
configuration.scheme = "http"

# Disable SSL verification (testing only)
configuration.verify_ssl = False

# Custom SSL CA cert
configuration.ssl_ca_cert = "/path/to/ca-bundle.crt"

Proxy

configuration.proxy = "http://proxy:8080"
configuration.proxy_https = "https://proxy:8080"
# Also reads env vars: http_proxy, https_proxy (code takes precedence)

Timeouts

# Default: 30s each
configuration.connection_timeout = 10   # seconds
configuration.read_timeout = 60         # seconds

# Per-request timeout via RuntimeOption
runtime_option = volcenginesdkcore.RuntimeOption()
runtime_option.connection_timeout = 5
runtime_option.read_timeout = 30
resp = api_instance.some_action(request, _runtime_option=runtime_option)

Retry

# Retry is enabled by default for network errors and throttling
configuration.max_retry_attempts = 5
configuration.min_retry_delay = 300      # ms
configuration.max_retry_delay = 300000   # ms

# Disable retry
configuration.max_retry_attempts = 0

# Custom retry error codes
configuration.retry_error_codes = ["Throttling", "ResourceIsBusy"]

# Backoff strategies: ExponentialBackoff, ExponentialBackoffWithJitter (default)
configuration.retry_backoff_strategy = "ExponentialBackoffWithJitter"

Debugging

configuration.debug = True
# Log level: configuration.log_level = "DEBUG"
# Log file: configuration.log_file = "/path/to/sdk.log"