45 lines
1.4 KiB
TypeScript
45 lines
1.4 KiB
TypeScript
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import { DenoKvPrimitives } from "../plugos/lib/deno_kv_primitives.ts";
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import { KvPrimitives } from "../plugos/lib/kv_primitives.ts";
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import { path } from "./deps.ts";
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/**
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* Environment variables:
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* - SB_DB_BACKEND: "denokv" or "off" (default: denokv)
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* - SB_KV_DB (denokv only): path to the database file (default .silverbullet.db) or ":cloud:" for cloud storage
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*/
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export async function determineDatabaseBackend(
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singleTenantFolder?: string,
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): Promise<
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KvPrimitives | undefined
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> {
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const backendConfig = Deno.env.get("SB_DB_BACKEND") || "denokv";
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switch (backendConfig) {
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case "denokv": {
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let dbFile: string | undefined = Deno.env.get("SB_KV_DB") ||
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".silverbullet.db";
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if (singleTenantFolder) {
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// If we're running in single tenant mode, we may as well use the tenant's space folder to keep the database
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dbFile = path.resolve(singleTenantFolder, dbFile);
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}
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if (dbFile === ":cloud:") {
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dbFile = undefined; // Deno Deploy will use the default KV store
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}
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const denoDb = await Deno.openKv(dbFile);
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console.info(
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`Using DenoKV as a database backend (${
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dbFile || "cloud"
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}), running in server-processing mode.`,
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);
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return new DenoKvPrimitives(denoDb);
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}
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default:
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console.info(
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"Running in databaseless mode: no server-side indexing and state keeping (beyond space files) will happen.",
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);
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return;
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}
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}
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