Multiple platforms about ltijs

[ahelord]

Hi, @Cvmcosta could you please provide me an example? I am a little confused

[Cvmcosta]

In order to connect a tool provider to a platform with LTI they have to be registered in each other. And you can register as many platforms as you want just by calling the registerPlatform method multiple times:

// Register platforms
await lti.registerPlatform({ 
    url: 'https://platform.url1',
    name: 'Platform 1',
    clientId: 'TOOLCLIENTID1',
    authenticationEndpoint: 'https://platform.url/auth1',
    accesstokenEndpoint: 'https://platform.url/token1',
    authConfig: { method: 'JWK_SET', key: 'https://platform.url/keyset1' }
})
await lti.registerPlatform({ 
    url: 'https://platform.url2',
    name: 'Platform 2',
    clientId: 'TOOLCLIENTID2',
    authenticationEndpoint: 'https://platform.url/auth2',
    accesstokenEndpoint: 'https://platform.url/token2',
    authConfig: { method: 'JWK_SET', key: 'https://platform.url/keyset2' }
})

After doing so, your provider would be able to work with both platorms 1 and 2

[ahelord]

thanks i will try it

[Cvmcosta]

Hello! Yes, you can register and work with as many platforms as you want.

[Cvmcosta]

Great! Let me know how it goes :)

[ahelord]

What happens with the key that must be inserted in moodle would generate more than one?

[Cvmcosta]

Ltijs generates one key per platform, you can just get the individual keys after registration:

// Register platforms
const platA = await lti.registerPlatform({ 
    url: 'https://platform.url1',
    name: 'Platform 1',
    clientId: 'TOOLCLIENTID1',
    authenticationEndpoint: 'https://platform.url/auth1',
    accesstokenEndpoint: 'https://platform.url/token1',
    authConfig: { method: 'JWK_SET', key: 'https://platform.url/keyset1' }
})
console.log(await platA.platformPublicKey())

const platB = await lti.registerPlatform({ 
    url: 'https://platform.url2',
    name: 'Platform 2',
    clientId: 'TOOLCLIENTID2',
    authenticationEndpoint: 'https://platform.url/auth2',
    accesstokenEndpoint: 'https://platform.url/token2',
    authConfig: { method: 'JWK_SET', key: 'https://platform.url/keyset2' }
})
console.log(await platB.platformPublicKey())

[ahelord]

@Cvmcosta thank you very much.