@tai-kun/surrealdb
Version:
The SurrealDB SDK for JavaScript
229 lines (227 loc) • 24.3 kB
JavaScript
;
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// src/surreal/init-pool.ts
var init_pool_exports = {};
__export(init_pool_exports, {
default: () => initPool
});
module.exports = __toCommonJS(init_pool_exports);
var import_errors = require("../errors/index.cjs");
var import_utils = require("../utils/index.cjs");
var import_create_surql = __toESM(require("./surql/create-surql.cjs"), 1);
function initPool(init) {
var _closeAll_dec, _close_dec, _get_dec, _init;
const {
alias,
setup = /* @__PURE__ */ __name(async function(endpoint, options) {
if (this.state === "open") {
return;
}
await this.connect(endpoint, options);
}, "setup"),
Client,
formatter,
varPrefix,
...others
} = init;
const _Surreal = class _Surreal extends Client {
constructor(dispose) {
super({
formatter,
...others
});
this.dispose = dispose;
}
disconnect() {
this.dispose();
}
[Symbol.dispose || Symbol.for("Symbol.dispose")]() {
this.disconnect();
}
};
__name(_Surreal, "Surreal");
let Surreal = _Surreal;
const _Pool = class _Pool {
constructor(options = {}) {
__runInitializers(_init, 5, this);
this.map = /* @__PURE__ */ new Map();
this.closing = /* @__PURE__ */ new Set();
this.setup = void 0;
this.alias = void 0;
this.closeDelay = void 0;
this.setup = options.setup || setup;
this.alias = { ...alias, ...options.alias };
this.closeDelay = Math.max(0, options.closeDelay ?? 3e4);
}
getUrl(endpoint) {
if (typeof endpoint === "string") {
return this.alias[endpoint] === void 0 ? void 0 : new URL(this.alias[endpoint]);
}
return new URL(endpoint);
}
getKey(endpoint) {
return this.getUrl(endpoint)?.toString();
}
async get(endpoint, options = {}) {
const url = this.getUrl(endpoint);
const alias2 = typeof endpoint === "string" ? endpoint : void 0;
if (!url) {
throw new import_errors.SurrealValueError("predefined endpoint", url, {
cause: {
alias: alias2
}
});
}
const key = url.toString();
if (this.map.has(key)) {
const val = this.map.get(key);
clearTimeout(val[2]);
delete val[2];
const db2 = val[1];
await this.setup.call(db2, url, options, alias2);
val[0] += 1;
return db2;
}
const db = new Surreal(() => {
const val = this.map.get(key);
if (!val) {
return;
}
val[0] -= 1;
if (val[0] > 0 || 2 in val) {
return;
}
let promise;
const close = /* @__PURE__ */ __name(async (options2) => {
clearTimeout(val[2]);
this.map.delete(key);
promise ||= (async () => {
try {
await val[1].close(options2);
} catch (e) {
console.error(e);
} finally {
this.closing.delete(close);
}
})();
return promise;
}, "close");
val[2] = setTimeout(close, this.closeDelay);
this.closing.add(close);
});
await this.setup.call(db, url, options, alias2);
this.map.set(key, [1, db]);
return db;
}
async close(endpoint, options) {
const key = this.getKey(endpoint);
const val = this.map.get(key);
if (!val) {
return;
}
const [, db] = val;
if (db.state === "closed" || db.state === "closing") {
return;
}
await db.close(options);
}
async closeAll(options) {
for (const [, db] of this.map.values()) {
db.disconnect();
}
await Promise.all([...this.closing].map(async (close) => {
await close(options);
}));
}
async [(_get_dec = [import_utils.mutex], _close_dec = [import_utils.mutex], _closeAll_dec = [import_utils.mutex], Symbol.asyncDispose || Symbol.for("Symbol.asyncDispose"))]() {
await this.closeAll();
}
};
_init = __decoratorStart(null);
__decorateElement(_init, 1, "get", _get_dec, _Pool);
__decorateElement(_init, 1, "close", _close_dec, _Pool);
__decorateElement(_init, 1, "closeAll", _closeAll_dec, _Pool);
__decoratorMetadata(_init, _Pool);
__name(_Pool, "Pool");
let Pool = _Pool;
return {
// @ts-expect-error
Pool,
surql: (0, import_create_surql.default)({
formatter,
varPrefix
})
};
}
__name(initPool, "initPool");
//# sourceMappingURL=data:application/json;base64,{
  "version": 3,
  "sources": ["../../src/surreal/init-pool.ts"],
  "sourcesContent": ["import type ClientBase from \"@tai-kun/surrealdb/basic-client\";\nimport type {\n  ClientCloseOptions,\n  ClientConfig,\n} from \"@tai-kun/surrealdb/basic-client\";\nimport { SurrealValueError } from \"../errors\";\nimport { mutex } from \"../utils\";\nimport createSurql, {\n  type CreateSurqlConfig,\n  type Surql,\n} from \"./surql/create-surql\";\n\ntype ClientConstructor = new(config: ClientConfig) => ClientBase;\n\n/**\n * @experimental\n */\nexport interface PoolSetupOptions {\n  readonly signal?: AbortSignal | undefined;\n}\n\ntype Alias = { readonly [name: string]: string | URL };\n\n/**\n * @experimental\n */\nexport interface PoolInit<\n  TClientConstructor extends ClientConstructor,\n  TAlias extends Alias,\n> extends ClientConfig, CreateSurqlConfig {\n  readonly Client: TClientConstructor;\n  readonly alias?: TAlias | undefined;\n  readonly setup?: (\n    this: InstanceType<TClientConstructor>,\n    endpoint: URL,\n    options: PoolSetupOptions,\n    alias: keyof TAlias | undefined,\n  ) => PromiseLike<void>;\n}\n\n/**\n * @experimental\n */\nexport type PoolSurreal<TClientConstructor extends ClientConstructor> =\n  & InstanceType<TClientConstructor>\n  & Disposable\n  & { disconnect(options?: ClientCloseOptions | undefined): void };\n\ntype Endpoint<TAlias extends Alias> = Extract<keyof TAlias, string>;\n\n/**\n * @experimental\n */\nexport interface PoolInstance<\n  TClientConstructor extends ClientConstructor,\n  TAlias extends Alias,\n> extends AsyncDisposable {\n  get(\n    endpoint: Endpoint<TAlias> | URL,\n    options?: PoolSetupOptions | undefined,\n  ): Promise<PoolSurreal<TClientConstructor>>;\n  close(\n    endpoint: Endpoint<TAlias> | URL,\n    options?: ClientCloseOptions | undefined,\n  ): Promise<void>;\n  closeAll(options?: ClientCloseOptions | undefined): Promise<void>;\n}\n\n/**\n * @experimental\n */\nexport interface PoolOptions<\n  TClientConstructor extends ClientConstructor,\n  TAlias extends Alias,\n> {\n  readonly alias?: TAlias | undefined;\n  readonly setup?: PoolInit<TClientConstructor, TAlias>[\"setup\"];\n  readonly closeDelay?: number | undefined;\n}\n\n/**\n * @experimental\n */\nexport interface InitializedPool<\n  TClientConstructor extends ClientConstructor,\n  TAlias extends Alias,\n> {\n  Pool: new<const TPoolAlias extends Alias = {}>(\n    options?: PoolOptions<TClientConstructor, TPoolAlias> | undefined,\n  ) => PoolInstance<\n    TClientConstructor,\n    Omit<TAlias, keyof TPoolAlias> & TPoolAlias\n  >;\n  surql: Surql;\n}\n\n/**\n * @experimental\n */\nexport default function initPool<\n  TClientConstructor extends ClientConstructor,\n  const TAlias extends Alias = {},\n>(\n  init: PoolInit<TClientConstructor, TAlias>,\n): InitializedPool<TClientConstructor, TAlias> {\n  const {\n    alias,\n    setup = async function(endpoint, options) {\n      if (this.state === \"open\") {\n        return;\n      }\n\n      await this.connect(endpoint, options);\n    },\n    Client,\n    formatter,\n    varPrefix,\n    ...others\n  } = init;\n\n  // @ts-expect-error\n  class Surreal extends Client implements Disposable {\n    constructor(private dispose: () => void) {\n      super({\n        formatter,\n        ...others,\n      });\n    }\n\n    disconnect(): void {\n      this.dispose();\n    }\n\n    [Symbol.dispose || Symbol.for(\"Symbol.dispose\")](): void {\n      this.disconnect();\n    }\n  }\n\n  // @ts-expect-error\n  class Pool implements PoolInstance<ClientConstructor, Alias> {\n    private map = new Map<string, [\n      number,\n      PoolSurreal<ClientConstructor>,\n      ReturnType<typeof setTimeout>?,\n    ]>();\n\n    private closing = new Set<\n      (options: ClientCloseOptions | undefined) => Promise<void>\n    >();\n\n    private setup: NonNullable<PoolInit<ClientConstructor, Alias>[\"setup\"]>;\n\n    private alias: Alias;\n\n    private closeDelay: number;\n\n    constructor(\n      options: PoolOptions<ClientConstructor, Alias> | undefined = {},\n    ) {\n      this.setup = (options.setup || setup) as NonNullable<\n        PoolInit<ClientConstructor, Alias>[\"setup\"]\n      >;\n      this.alias = { ...alias, ...options.alias };\n      this.closeDelay = Math.max(0, options.closeDelay ?? 30e3);\n    }\n\n    private getUrl(endpoint: Endpoint<Alias> | URL): URL | undefined {\n      if (typeof endpoint === \"string\") {\n        return this.alias[endpoint] === undefined\n          ? undefined\n          : new URL(this.alias[endpoint]);\n      }\n\n      return new URL(endpoint); // copy\n    }\n\n    private getKey(endpoint: Endpoint<Alias> | URL): string | undefined {\n      return this.getUrl(endpoint)?.toString();\n    }\n\n    @mutex\n    async get(\n      endpoint: Endpoint<Alias> | URL,\n      options: PoolSetupOptions | undefined = {},\n    ): Promise<PoolSurreal<ClientConstructor>> {\n      const url = this.getUrl(endpoint);\n      const alias = typeof endpoint === \"string\" ? endpoint : undefined;\n\n      if (!url) {\n        throw new SurrealValueError(\"predefined endpoint\", url, {\n          cause: {\n            alias,\n          },\n        });\n      }\n\n      const key = url.toString();\n\n      if (this.map.has(key)) {\n        const val = this.map.get(key)!;\n        clearTimeout(val[2]);\n        delete val[2];\n        const db = val[1];\n        await this.setup.call(db, url, options, alias);\n        val[0] += 1;\n\n        return db;\n      }\n\n      const db = new Surreal(() => {\n        const val = this.map.get(key);\n\n        if (!val) {\n          return;\n        }\n\n        val[0] -= 1;\n\n        if (val[0] > 0 || 2 in val) {\n          return;\n        }\n\n        let promise: Promise<void> | undefined;\n        const close = async (options?: ClientCloseOptions | undefined) => {\n          clearTimeout(val[2]);\n          this.map.delete(key);\n          promise ||= (async () => {\n            try {\n              await val[1].close(options);\n            } catch (e) {\n              // TODO(tai-kun): TaskEmitter \u3092\u4F7F\u3063\u3066\u5229\u7528\u8005\u304C\u30A8\u30E9\u30FC\u3092\u53D7\u3051\u53D6\u308C\u308B\u3088\u3046\u306B\u3059\u308B\u3002\n              console.error(e);\n            } finally {\n              this.closing.delete(close);\n            }\n          })();\n\n          return promise;\n        };\n        val[2] = setTimeout(close, this.closeDelay);\n        this.closing.add(close);\n      }) as unknown as PoolSurreal<ClientConstructor>;\n      await this.setup.call(db, url, options, alias);\n      this.map.set(key, [1, db]);\n\n      return db;\n    }\n\n    @mutex\n    async close(\n      endpoint: Endpoint<Alias> | URL,\n      options?: ClientCloseOptions | undefined,\n    ): Promise<void> {\n      const key = this.getKey(endpoint);\n      const val = this.map.get(key!);\n\n      if (!val) {\n        return;\n      }\n\n      const [, db] = val;\n\n      if (db.state === \"closed\" || db.state === \"closing\") {\n        return;\n      }\n\n      await db.close(options);\n    }\n\n    @mutex\n    async closeAll(options?: ClientCloseOptions | undefined): Promise<void> {\n      for (const [, db] of this.map.values()) {\n        db.disconnect();\n      }\n\n      await Promise.all([...this.closing].map(async close => {\n        await close(options);\n      }));\n    }\n\n    async [Symbol.asyncDispose || Symbol.for(\"Symbol.asyncDispose\")]() {\n      await this.closeAll();\n    }\n  }\n\n  return {\n    // @ts-expect-error\n    Pool,\n    surql: createSurql({\n      formatter,\n      varPrefix,\n    }),\n  };\n}\n"],
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  "names": ["alias", "db", "options", "createSurql"]
}
