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AvaCloud SDK TypeScript

The AvaCloud SDK is a powerful and flexible toolset designed to simplify the integration with AvaCloud's suite of blockchain services. Currently, this SDK is focused on providing robust support for Data APIs.

SDK Installation

The SDK can be installed with either npm, pnpm, bun or yarn package managers.

NPM

npm add @avalabs/avacloud-sdk

PNPM

pnpm add @avalabs/avacloud-sdk

Bun

bun add @avalabs/avacloud-sdk

Yarn

yarn add @avalabs/avacloud-sdk zod

# Note that Yarn does not install peer dependencies automatically. You will need
# to install zod as shown above.

Requirements

For supported JavaScript runtimes, please consult RUNTIMES.md.

SDK Example Usage

Example

import { AvaCloudSDK } from "@avalabs/avacloud-sdk";

const avaCloudSDK = new AvaCloudSDK({
  apiKey: "<YOUR_API_KEY_HERE>",
  chainId: "43114",
  network: "mainnet",
});

async function run() {
  const result = await avaCloudSDK.metrics.healthCheck.metricsHealthCheck();

  // Handle the result
  console.log(result);
}

run();

Available Resources and Operations

Available methods

data

data.evm

data.evm.balances

data.evm.blocks

data.evm.chains

data.evm.contracts

data.evm.transactions

data.healthCheck

data.nfts

data.operations

data.primaryNetwork

data.primaryNetwork.balances

data.primaryNetwork.blocks

data.primaryNetwork.rewards

data.primaryNetwork.transactions

data.primaryNetwork.utxos

data.primaryNetwork.vertices

data.teleporter

data.usageMetrics

data.webhooks

metrics

metrics.chain

metrics.chain.metrics

metrics.evm

metrics.evm.chains

  • listChains - Get a list of supported blockchains
  • getChain - Get chain information for supported blockchain

metrics.healthCheck

metrics.lookingGlass

Standalone functions

All the methods listed above are available as standalone functions. These functions are ideal for use in applications running in the browser, serverless runtimes or other environments where application bundle size is a primary concern. When using a bundler to build your application, all unused functionality will be either excluded from the final bundle or tree-shaken away.

To read more about standalone functions, check FUNCTIONS.md.

Available standalone functions

Global Parameters

Certain parameters are configured globally. These parameters may be set on the SDK client instance itself during initialization. When configured as an option during SDK initialization, These global values will be used as defaults on the operations that use them. When such operations are called, there is a place in each to override the global value, if needed.

For example, you can set chainId to "43114" at SDK initialization and then you do not have to pass the same value on calls to operations like listChains. But if you want to do so you may, which will locally override the global setting. See the example code below for a demonstration.

Available Globals

The following global parameters are available.

Name Type Description
chainId string A supported EVM chain id, chain alias, or blockchain id.
network components.GlobalParamNetwork A supported network type mainnet or testnet/fuji.

Example

import { AvaCloudSDK } from "@avalabs/avacloud-sdk";

const avaCloudSDK = new AvaCloudSDK({
  apiKey: "<YOUR_API_KEY_HERE>",
  chainId: "43114",
  network: "mainnet",
});

async function run() {
  const result = await avaCloudSDK.metrics.evm.chains.listChains({
    network: "mainnet",
  });

  for await (const page of result) {
    // Handle the page
    console.log(page);
  }
}

run();

Pagination

Some of the endpoints in this SDK support pagination. To use pagination, you make your SDK calls as usual, but the returned response object will also be an async iterable that can be consumed using the for await...of syntax.

Here's an example of one such pagination call:

import { AvaCloudSDK } from "@avalabs/avacloud-sdk";

const avaCloudSDK = new AvaCloudSDK({
  apiKey: "<YOUR_API_KEY_HERE>",
  chainId: "43114",
  network: "mainnet",
});

async function run() {
  const result = await avaCloudSDK.metrics.evm.chains.listChains({
    network: "mainnet",
  });

  for await (const page of result) {
    // Handle the page
    console.log(page);
  }
}

run();

Retries

Some of the endpoints in this SDK support retries. If you use the SDK without any configuration, it will fall back to the default retry strategy provided by the API. However, the default retry strategy can be overridden on a per-operation basis, or across the entire SDK.

To change the default retry strategy for a single API call, simply provide a retryConfig object to the call:

import { AvaCloudSDK } from "@avalabs/avacloud-sdk";

const avaCloudSDK = new AvaCloudSDK({
  apiKey: "<YOUR_API_KEY_HERE>",
  chainId: "43114",
  network: "mainnet",
});

async function run() {
  const result = await avaCloudSDK.metrics.healthCheck.metricsHealthCheck({
    retries: {
      strategy: "backoff",
      backoff: {
        initialInterval: 1,
        maxInterval: 50,
        exponent: 1.1,
        maxElapsedTime: 100,
      },
      retryConnectionErrors: false,
    },
  });

  // Handle the result
  console.log(result);
}

run();

If you'd like to override the default retry strategy for all operations that support retries, you can provide a retryConfig at SDK initialization:

import { AvaCloudSDK } from "@avalabs/avacloud-sdk";

const avaCloudSDK = new AvaCloudSDK({
  retryConfig: {
    strategy: "backoff",
    backoff: {
      initialInterval: 1,
      maxInterval: 50,
      exponent: 1.1,
      maxElapsedTime: 100,
    },
    retryConnectionErrors: false,
  },
  apiKey: "<YOUR_API_KEY_HERE>",
  chainId: "43114",
  network: "mainnet",
});

async function run() {
  const result = await avaCloudSDK.metrics.healthCheck.metricsHealthCheck();

  // Handle the result
  console.log(result);
}

run();

Error Handling

All SDK methods return a response object or throw an error. By default, an API error will throw a errors.SDKError.

If a HTTP request fails, an operation my also throw an error from the models/errors/httpclienterrors.ts module:

HTTP Client Error Description
RequestAbortedError HTTP request was aborted by the client
RequestTimeoutError HTTP request timed out due to an AbortSignal signal
ConnectionError HTTP client was unable to make a request to a server
InvalidRequestError Any input used to create a request is invalid
UnexpectedClientError Unrecognised or unexpected error

In addition, when custom error responses are specified for an operation, the SDK may throw their associated Error type. You can refer to respective Errors tables in SDK docs for more details on possible error types for each operation. For example, the reindexNft method may throw the following errors:

Error Type Status Code Content Type
errors.BadRequest 400 application/json
errors.Unauthorized 401 application/json
errors.Forbidden 403 application/json
errors.NotFound 404 application/json
errors.TooManyRequests 429 application/json
errors.InternalServerError 500 application/json
errors.BadGateway 502 application/json
errors.ServiceUnavailable 503 application/json
errors.SDKError 4XX, 5XX */* 
import { AvaCloudSDK } from "@avalabs/avacloud-sdk";
import {
  BadGateway,
  BadRequest,
  Forbidden,
  InternalServerError,
  NotFound,
  SDKValidationError,
  ServiceUnavailable,
  TooManyRequests,
  Unauthorized,
} from "@avalabs/avacloud-sdk/models/errors";

const avaCloudSDK = new AvaCloudSDK({
  apiKey: "<YOUR_API_KEY_HERE>",
  chainId: "43114",
  network: "mainnet",
});

async function run() {
  try {
    await avaCloudSDK.data.nfts.reindexNft({
      address: "0xB97EF9Ef8734C71904D8002F8b6Bc66Dd9c48a6E",
      tokenId: "145",
    });
  } catch (err) {
    switch (true) {
      case (err instanceof SDKValidationError): {
        // Validation errors can be pretty-printed
        console.error(err.pretty());
        // Raw value may also be inspected
        console.error(err.rawValue);
        return;
      }
      case (err instanceof BadRequest): {
        // Handle err.data$: BadRequestData
        console.error(err);
        return;
      }
      case (err instanceof Unauthorized): {
        // Handle err.data$: UnauthorizedData
        console.error(err);
        return;
      }
      case (err instanceof Forbidden): {
        // Handle err.data$: ForbiddenData
        console.error(err);
        return;
      }
      case (err instanceof NotFound): {
        // Handle err.data$: NotFoundData
        console.error(err);
        return;
      }
      case (err instanceof TooManyRequests): {
        // Handle err.data$: TooManyRequestsData
        console.error(err);
        return;
      }
      case (err instanceof InternalServerError): {
        // Handle err.data$: InternalServerErrorData
        console.error(err);
        return;
      }
      case (err instanceof BadGateway): {
        // Handle err.data$: BadGatewayData
        console.error(err);
        return;
      }
      case (err instanceof ServiceUnavailable): {
        // Handle err.data$: ServiceUnavailableData
        console.error(err);
        return;
      }
      default: {
        throw err;
      }
    }
  }
}

run();

Validation errors can also occur when either method arguments or data returned from the server do not match the expected format. The SDKValidationError that is thrown as a result will capture the raw value that failed validation in an attribute called rawValue. Additionally, a pretty() method is available on this error that can be used to log a nicely formatted string since validation errors can list many issues and the plain error string may be difficult read when debugging.

Server Selection

Custom HTTP Client

The TypeScript SDK makes API calls using an HTTPClient that wraps the native Fetch API. This client is a thin wrapper around fetch and provides the ability to attach hooks around the request lifecycle that can be used to modify the request or handle errors and response.

The HTTPClient constructor takes an optional fetcher argument that can be used to integrate a third-party HTTP client or when writing tests to mock out the HTTP client and feed in fixtures.

The following example shows how to use the "beforeRequest" hook to to add a custom header and a timeout to requests and how to use the "requestError" hook to log errors:

import { AvaCloudSDK } from "@avalabs/avacloud-sdk";
import { HTTPClient } from "@avalabs/avacloud-sdk/lib/http";

const httpClient = new HTTPClient({
  // fetcher takes a function that has the same signature as native `fetch`.
  fetcher: (request) => {
    return fetch(request);
  }
});

httpClient.addHook("beforeRequest", (request) => {
  const nextRequest = new Request(request, {
    signal: request.signal || AbortSignal.timeout(5000)
  });

  nextRequest.headers.set("x-custom-header", "custom value");

  return nextRequest;
});

httpClient.addHook("requestError", (error, request) => {
  console.group("Request Error");
  console.log("Reason:", `${error}`);
  console.log("Endpoint:", `${request.method} ${request.url}`);
  console.groupEnd();
});

const sdk = new AvaCloudSDK({ httpClient });

Authentication

Per-Client Security Schemes

This SDK supports the following security scheme globally:

Name Type Scheme
apiKey apiKey API key

To authenticate with the API the apiKey parameter must be set when initializing the SDK client instance. For example:

import { AvaCloudSDK } from "@avalabs/avacloud-sdk";

const avaCloudSDK = new AvaCloudSDK({
  apiKey: "<YOUR_API_KEY_HERE>",
  chainId: "43114",
  network: "mainnet",
});

async function run() {
  const result = await avaCloudSDK.metrics.healthCheck.metricsHealthCheck();

  // Handle the result
  console.log(result);
}

run();

Debugging

You can setup your SDK to emit debug logs for SDK requests and responses.

You can pass a logger that matches console's interface as an SDK option.

Warning

Beware that debug logging will reveal secrets, like API tokens in headers, in log messages printed to a console or files. It's recommended to use this feature only during local development and not in production.

import { AvaCloudSDK } from "@avalabs/avacloud-sdk";

const sdk = new AvaCloudSDK({ debugLogger: console });

Summary

Data API: The Data API provides web3 application developers with multi-chain data related to Avalanche's primary network, Avalanche subnets, and Ethereum. With Data API, you can easily build products that leverage real-time and historical transaction and transfer history, native and token balances, and various types of token metadata. The API is in Beta and may be subject to change.

If you have feedback or feature requests for the API, please submit them here. Bug reports can be submitted here, and any potential security issues can be reported here.

Table of Contents

Verify Webhook Signature

The isValidSignature function is a utility function in the Avalanche SDK that verifies the authenticity and integrity of incoming webhook requests from AvaCloud. This function ensures that the requests are coming from a trusted source by validating the HMAC SHA-256 signature provided in the request header.Usage

Import and use the isValidSignature function:

import { isValidSignature } from '@avalabs/avacloud-sdk/utils';
import express from 'express';

const app = express();
app.use(express.json());

const signingSecret = 'your-signing-secret'; // Replace with your signing secret

app.post('/webhook', (req, res) => {
    const signature = req.headers['x-signature'];
    const payload = req.body;

    if (isValidSignature(signingSecret, signature, payload)) {
        console.log('Valid signature');
        // Process the request
    } else {
        console.log('Invalid signature');
    }

    res.json({ received: true });
});

app.listen(8000, () => console.log('Server running on port 8000'));

Parameters

  • signingSecret: The secret key for signing.
  • signature: The HMAC SHA-256 signature from the request header.
  • payload: The JSON payload of the request.

More Information

Use this function to securely validate webhooks from AvaCloud.

For more information, visit the AvaCloud Developers documentation.

Development

Maturity

This SDK is in beta, and there may be breaking changes between versions without a major version update. Therefore, we recommend pinning usage to a specific package version. This way, you can install the same version each time without breaking changes unless you are intentionally looking for the latest version.

Contributions

While we value open-source contributions to this SDK, this library is generated programmatically. Any manual changes added to internal files will be overwritten on the next generation. We look forward to hearing your feedback. Feel free to open a PR or an issue with a proof of concept and we'll do our best to include it in a future release.

About

A comprehensive TypeScript SDK to integrate seamlessly with Glacier APIs.

developers.avacloud.io/avacloud-sdk/getting-started

Topics

javascript typescript glacier avacloud

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Releases 14

typescript - v0.7.0 - 2024-11-14 18:57:54 Latest
Nov 14, 2024
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