@supabase-cache-helpers/postgrest-server/dist/stores.js

A collection of server-side caching utilities for working with Supabase.

// src/stores/memory.ts
var MemoryStore = class {
  state;
  capacity;
  name = "memory";
  constructor(config) {
    this.state = config.persistentMap;
    this.capacity = config.capacity;
  }
  setMostRecentlyUsed(key, value) {
    this.state.delete(key);
    this.state.set(key, value);
  }
  async get(key) {
    const value = this.state.get(key);
    if (!value) {
      return Promise.resolve(void 0);
    }
    if (value.expires <= Date.now()) {
      await this.remove(key);
    }
    if (this.capacity) {
      this.setMostRecentlyUsed(key, value);
    }
    return Promise.resolve(value.entry);
  }
  async set(key, entry) {
    if (this.capacity) {
      this.setMostRecentlyUsed(key, {
        expires: entry.staleUntil,
        entry
      });
    } else {
      this.state.set(key, {
        expires: entry.staleUntil,
        entry
      });
    }
    if (this.capacity && this.state.size > this.capacity) {
      const oldestKey = this.state.keys().next().value;
      if (oldestKey !== void 0) {
        this.state.delete(oldestKey);
      }
    }
    return Promise.resolve();
  }
  async remove(keys) {
    const cacheKeys = Array.isArray(keys) ? keys : [keys];
    for (const key of cacheKeys) {
      this.state.delete(key);
    }
    return Promise.resolve();
  }
  async removeByPrefix(prefix) {
    for (const key of this.state.keys()) {
      if (key.startsWith(prefix)) {
        this.state.delete(key);
      }
    }
  }
  async removeByPattern(pattern) {
    const regex = this.globToRegex(pattern);
    for (const key of this.state.keys()) {
      if (regex.test(key)) {
        this.state.delete(key);
      }
    }
  }
  /**
   * Convert a glob pattern to a regex, handling escaped characters.
   * Supports: * (any chars), ? (single char), \* \? \[ \] (literals)
   */
  globToRegex(pattern) {
    let regex = "^";
    let i = 0;
    while (i < pattern.length) {
      const char = pattern[i];
      if (char === "\\" && i + 1 < pattern.length) {
        const next = pattern[i + 1];
        regex += "\\" + next;
        i += 2;
      } else if (char === "*") {
        regex += ".*";
        i++;
      } else if (char === "?") {
        regex += ".";
        i++;
      } else if (/[.+^${}()|[\]\\]/.test(char)) {
        regex += "\\" + char;
        i++;
      } else {
        regex += char;
        i++;
      }
    }
    regex += "$";
    return new RegExp(regex);
  }
};

// src/stores/redis.ts
var RedisStore = class {
  redis;
  name = "redis";
  prefix;
  constructor(config) {
    this.redis = config.redis;
    this.prefix = config.prefix || "sbch";
  }
  buildCacheKey(key) {
    return [this.prefix, key].join("::");
  }
  async get(key) {
    const res = await this.redis.get(this.buildCacheKey(key));
    if (!res) return;
    return JSON.parse(res);
  }
  async set(key, entry) {
    await this.redis.set(
      this.buildCacheKey(key),
      JSON.stringify(entry),
      "PXAT",
      entry.staleUntil
    );
  }
  async remove(keys) {
    const cacheKeys = (Array.isArray(keys) ? keys : [keys]).map(
      (key) => this.buildCacheKey(key).toString()
    );
    this.redis.del(...cacheKeys);
  }
  async removeByPrefix(prefix) {
    const pattern = `${prefix}*`;
    let cursor = "0";
    do {
      const [nextCursor, keys] = await this.redis.scan(
        cursor,
        "MATCH",
        pattern,
        "COUNT",
        100
      );
      cursor = nextCursor;
      if (keys.length > 0) {
        await this.redis.del(...keys);
      }
    } while (cursor !== "0");
  }
  async removeByPattern(pattern) {
    const fullPattern = this.buildCacheKey(pattern);
    let cursor = "0";
    do {
      const [nextCursor, keys] = await this.redis.scan(
        cursor,
        "MATCH",
        fullPattern,
        "COUNT",
        100
      );
      cursor = nextCursor;
      if (keys.length > 0) {
        await this.redis.del(...keys);
      }
    } while (cursor !== "0");
  }
};
export {
  MemoryStore,
  RedisStore
};
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