solita

Sol ana I DL t o A PI generator.

Table of Contents generated with DocToc

• How does it Work?
• Shank + Solita Example (Recommended)
  • Full Example: Token Metadata Solita + Shank Setup
• Anchor + Solita Example (Recommended)
  • Full Example: MPL Candy Machine Solita + Anchor Setup
• Type Aliases
• Custom De/Serializers
• Advanced Shank + Solita Example
• Advanced Anchor + Solita Example
• Solita in the Wild
• LICENSE

How does it Work?

Solita generates a low level TypeScript SDK for your Solana Rust programs from the IDL extracted by anchor or shank.

Shank + Solita Example (Recommended)

In order to use solita with shank do the following:

• add the shank library to your Rust project via cargo add shank
• annotate your Rust program as outlined here
• add solita to the dev dependencies of your SDK package via yarn add -D @metaplex-foundation/solita
• add a config similar to the below into .solitarc.js in your SDK package root

const path = require('path');
const programDir = path.join(__dirname, '..', 'program');
const idlDir = path.join(__dirname, 'idl');
const sdkDir = path.join(__dirname, 'src', 'generated');
const binaryInstallDir = path.join(__dirname, '.crates');

module.exports = {
  idlGenerator: 'shank',
  programName: 'mpl_token_vault',
  idlDir,
  sdkDir,
  binaryInstallDir,
  programDir,
};

Now running yarn solita from the same folder will take care of installing the matching shank binary and generating the IDL and SDK.

Run it each time you make a change to your program to generate the TypeScript SDK.

Since we're writing the shank binary to .crates/ you should add that folder to your .gitignore.

Full Example: Token Metadata Solita + Shank Setup

• annotated instructions
• annotated accounts
• generated TypeScript

Anchor + Solita Example (Recommended)

In order to use solita with anchor do the following:

• annotate your Rust program with anchor attributes
• add solita to the dev dependencies of your SDK package via yarn add -D @metaplex-foundation/solita
• add a config similar to the below into .solitarc.js in your SDK package root

const path = require('path');
const programDir = path.join(__dirname, '..', 'program');
const idlDir = path.join(__dirname, 'idl');
const sdkDir = path.join(__dirname, 'src', 'generated');
const binaryInstallDir = path.join(__dirname, '.crates');

module.exports = {
  idlGenerator: 'anchor',
  programName: 'auction_house',
  programId: 'hausS13jsjafwWwGqZTUQRmWyvyxn9EQpqMwV1PBBmk',
  idlDir,
  sdkDir,
  binaryInstallDir,
  programDir,
};

Now running yarn solita from the same folder will take care of installing the matching anchor binary and generating the IDL and SDK.

Run it each time you make a change to your program to generate the TypeScript SDK.

Since we're writing the anchor binary to .crates/ you should add that folder to your .gitignore.

Full Example: MPL Candy Machine Solita + Anchor Setup

• annotated anchor program
• generated TypeScript

Type Aliases

In order to have Solita resolve specific types to a Rust builtin type please provide a type alias map as in the below config. Solita then will treat those as if they were the aliased type.

module.exports = {
  idlGenerator: 'anchor',
  [ .. ]
  typeAliases: {
    UnixTimestamp: 'i64'
  }
};

Custom De/Serializers

For some accounts the generated de/serializers don't work. In those cases a custom de/serializer can be specified.

This is as simple as adding a module to your project which exports a either or both of the below functions:

export function deserialize(buf: Buffer, offset = 0): [<Account>, number] {
  [..]
}

export function serialize(instance: <Account>Args, byteSize?: number): [Buffer, number]
  [..]
}

Then provide them as serializers to Solita or via the solita config:

module.exports = {
  idlGenerator: 'shank',
  [ .. ]
  serializers: {
    Metadata: './src/custom/metadata-deserializer.ts',
  },
};

Advanced Shank + Solita Example

If you need more control you can also add a script. However you're on your own to ensure that the globally installed shank binary matches the version of its library you're using.

• globally install shank via cargo install shank-cli
• add a script similar to the below to your SDK package and

const path = require('path');
const { Solita } = require('@metaplex-foundation/solita');
const {
  rustbinMatch,
  confirmAutoMessageConsole,
} = require('@metaplex-foundation/rustbin')
const { spawn } = require('child_process');

const programDir = path.join(__dirname, '..', '..', 'program');
const cargoToml = path.join(programDir, 'Cargo.toml')
const generatedIdlDir = path.join(__dirname, '..', 'idl');
const generatedSDKDir = path.join(__dirname, '..', 'src', 'generated');
const rootDir = path.join(__dirname, '..', '.crates')

const PROGRAM_NAME = 'mpl_token_metadata';
const rustbinConfig = {
  rootDir,
  binaryName: 'shank',
  binaryCrateName: 'shank-cli',
  libName: 'shank',
  dryRun: false,
  cargoToml,
}

async function main() {
  const { fullPathToBinary: shankExecutable } = await rustbinMatch(
    rustbinConfig,
    confirmAutoMessageConsole
  )
  const shank = spawn(shankExecutable, ['idl', '--out-dir', generatedIdlDir, '--crate-root', programDir])
    .on('error', (err) => {
      console.error(err);
      if (err.code === 'ENOENT') {
        console.error(
          'Ensure that `shank` is installed and in your path, see:\n  https://github.com/metaplex-foundation/shank\n',
        );
      }
      process.exit(1);
    })
    .on('exit', () => {
      generateTypeScriptSDK();
    });

  shank.stdout.on('data', (buf) => console.log(buf.toString('utf8')));
  shank.stderr.on('data', (buf) => console.error(buf.toString('utf8')));
}

async function generateTypeScriptSDK() {
  console.error('Generating TypeScript SDK to %s', generatedSDKDir);
  const generatedIdlPath = path.join(generatedIdlDir, `${PROGRAM_NAME}.json`);

  const idl = require(generatedIdlPath);
  const gen = new Solita(idl, { formatCode: true });
  await gen.renderAndWriteTo(generatedSDKDir);

  console.error('Success!');

  process.exit(0);
}

main().catch((err) => {
  console.error(err)
  process.exit(1)
})

Advanced Anchor + Solita Example

If you need more control you can also add a script. However you're on your own to ensure that the globally installed anchor binary matches the version of its library you're using.

• globally install anchor
• add a script similar to the below to your SDK package

const path = require('path');
const {
  rustbinMatch,
  confirmAutoMessageConsole,
} = require('@metaplex-foundation/rustbin')
const { spawn } = require('child_process');
const { Solita } = require('@metaplex-foundation/solita');
const { writeFile } = require('fs/promises');

const PROGRAM_NAME = 'candy_machine';
const PROGRAM_ID = 'cndy3Z4yapfJBmL3ShUp5exZKqR3z33thTzeNMm2gRZ';

const programDir = path.join(__dirname, '..', '..', 'program');
const cargoToml = path.join(programDir, 'Cargo.toml')
const generatedIdlDir = path.join(__dirname, '..', 'idl');
const generatedSDKDir = path.join(__dirname, '..', 'src', 'generated');
const rootDir = path.join(__dirname, '..', '.crates')

async function main() {
  const { fullPathToBinary: anchorExecutable } = await rustbinMatch(
    rustbinConfig,
    confirmAutoMessageConsole
  )
  const anchor = spawn(anchorExecutable, ['build', '--idl', generatedIdlDir], { cwd: programDir })
    .on('error', (err) => {
      console.error(err);
      // @ts-ignore this err does have a code
      if (err.code === 'ENOENT') {
        console.error(
          'Ensure that `anchor` is installed and in your path, see:\n  https://project-serum.github.io/anchor/getting-started/installation.html#install-anchor\n',
        );
      }
      process.exit(1);
    })
    .on('exit', () => {
      console.log('IDL written to: %s', path.join(generatedIdlDir, `${PROGRAM_NAME}.json`));
      generateTypeScriptSDK();
    });

  anchor.stdout.on('data', (buf) => console.log(buf.toString('utf8')));
  anchor.stderr.on('data', (buf) => console.error(buf.toString('utf8')));
}

async function generateTypeScriptSDK() {
  console.error('Generating TypeScript SDK to %s', generatedSDKDir);
  const generatedIdlPath = path.join(generatedIdlDir, `${PROGRAM_NAME}.json`);

  const idl = require(generatedIdlPath);
  if (idl.metadata?.address == null) {
    idl.metadata = { ...idl.metadata, address: PROGRAM_ID };
    await writeFile(generatedIdlPath, JSON.stringify(idl, null, 2));
  }
  const gen = new Solita(idl, { formatCode: true });
  await gen.renderAndWriteTo(generatedSDKDir);

  console.error('Success!');

  process.exit(0);
}

main().catch((err) => {
  console.error(err)
  process.exit(1)
})

Solita in the Wild

Find more solita, shank and anchor examples inside the metaplex-program-library.

LICENSE

Apache-2.0