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ui: add proxy support for jupiter client #2121

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ui: add proxy support for jupiter client #2121

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29 changes: 22 additions & 7 deletions sdk/src/jupiter/jupiterClient.ts
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Original file line number Diff line number Diff line change
Expand Up @@ -233,41 +233,54 @@ export class JupiterClient {
connection: Connection;
lookupTableCahce = new Map<string, AddressLookupTableAccount>();
private apiKey?: string;
private proxyUrl?: string;

/**
* Create a Jupiter client
* @param connection - Solana connection
* @param url - Optional custom API URL. Defaults to https://api.jup.ag/swap
* @param apiKey - API key for Jupiter API. Required for api.jup.ag (free tier available at https://portal.jup.ag)
* @param proxyUrl - Optional proxy URL to route requests through (hides API key from client)
*/
constructor({
connection,
url,
apiKey,
proxyUrl,
}: {
connection: Connection;
url?: string;
apiKey?: string;
proxyUrl?: string;
}) {
this.connection = connection;
this.url = url ?? RECOMMENDED_JUPITER_API;
this.apiKey = apiKey;
this.proxyUrl = proxyUrl;
}

/**
* Get the headers for API requests, including API key if configured
* Get the headers for API requests, including API key if configured and not using proxy
*/
private getHeaders(contentType?: string): Record<string, string> {
const headers: Record<string, string> = {};
if (contentType) {
headers['Content-Type'] = contentType;
}
if (this.apiKey) {
// Only include API key if not using proxy (proxy handles auth)
if (this.apiKey && !this.proxyUrl) {
headers['x-api-key'] = this.apiKey;
}
return headers;
}

/**
* Get the base URL for API requests, using proxy if configured
*/
private getBaseUrl(): string {
return this.proxyUrl || this.url;
}

/**
* Get routes for a swap
* @param inputMint the mint of the input token
Expand Down Expand Up @@ -320,16 +333,17 @@ export class JupiterClient {
if (swapMode === 'ExactOut') {
params.delete('maxAccounts');
}
const baseUrl = this.getBaseUrl();
const apiVersionParam =
this.url === RECOMMENDED_JUPITER_API || this.url === LEGACY_JUPITER_API
!this.proxyUrl && (this.url === RECOMMENDED_JUPITER_API || this.url === LEGACY_JUPITER_API)
? RECOMMENDED_JUPITER_API_VERSION
: '';
const headers = this.getHeaders();
const fetchOptions: RequestInit =
const fetchOptions =
Object.keys(headers).length > 0 ? { headers } : {};
const quote = await (
await fetch(
`${this.url}${apiVersionParam}/quote?${params.toString()}`,
`${baseUrl}${apiVersionParam}/quote?${params.toString()}`,
fetchOptions
)
).json();
Expand All @@ -355,12 +369,13 @@ export class JupiterClient {
throw new Error('Jupiter swap quote not provided. Please try again.');
}

const baseUrl = this.getBaseUrl();
const apiVersionParam =
this.url === RECOMMENDED_JUPITER_API || this.url === LEGACY_JUPITER_API
!this.proxyUrl && (this.url === RECOMMENDED_JUPITER_API || this.url === LEGACY_JUPITER_API)
? RECOMMENDED_JUPITER_API_VERSION
: '';
const resp = await (
await fetch(`${this.url}${apiVersionParam}/swap`, {
await fetch(`${baseUrl}${apiVersionParam}/swap`, {
method: 'POST',
headers: this.getHeaders('application/json'),
body: JSON.stringify({
Expand Down
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