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Add backend constructor option for routing requests #48

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merged 2 commits into from
Apr 3, 2024
Merged

Add backend constructor option for routing requests #48

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5444c25
Add backend constructor option for routing requests
liamgriffiths Apr 2, 2024
a452216
Prettier fix
liamgriffiths Apr 3, 2024
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18 changes: 17 additions & 1 deletion src/Substrate.ts
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Original file line number Diff line number Diff line change
Expand Up @@ -23,6 +23,11 @@ type Configuration = {
* Request timeout in milliseconds. Default: 5m
*/
timeout?: number;

/**
* Switches between existing backend and newer backend
*/
backend?: "v0" | "v1";
};

/**
Expand All @@ -33,11 +38,18 @@ export class Substrate {
baseUrl: string;
apiVersion: string;
timeout: number;
backend: string;

/**
* Initialize the Substrate SDK.
*/
constructor({ apiKey, baseUrl, apiVersion, timeout }: Configuration) {
constructor({
apiKey,
baseUrl,
apiVersion,
timeout,
backend,
}: Configuration) {
if (!apiKey) {
throw new SubstrateError(
"An API Key is required. Specify it when constructing the Substrate client: `new Substrate({ apiKey: 'API_KEY' })`",
Expand All @@ -47,6 +59,7 @@ export class Substrate {
this.baseUrl = baseUrl ?? "https://api.substrate.run";
this.apiVersion = apiVersion ?? OpenAPIjson["info"]["version"];
this.timeout = timeout ?? 300000;
this.backend = backend ?? "v0";
}

/**
Expand Down Expand Up @@ -136,6 +149,9 @@ export class Substrate {
headers.append("X-Substrate-Runtime", props.runtime);
headers.append("X-Substrate-Runtime-Version", props.runtimeVersion);

// Switch between old and new backends
headers.append("X-Substrate-Backend", this.backend);

return headers;
}
}
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