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2025-03-14 16:55:12 +08:00
commit 6a3ae3d600
1537 changed files with 512730 additions and 0 deletions
@@ -0,0 +1,116 @@
+'use strict';
+
+const {
+  Validator
+} = require('./validator.js')
+
+const {
+  CacheKeyCascade
+} = require('./uni-cloud-cache.js')
+
+const {
+  BridgeError
+} = require('./bridge-error.js')
+
+class Storage {
+
+  constructor(type, keys) {
+    this._type = type || null
+    this._keys = keys || []
+  }
+
+  async get(key, fallback) {
+    this.validateKey(key)
+    const result = await this.create(key, fallback).get()
+    return result.value
+  }
+
+  async set(key, value, expiresIn) {
+    this.validateKey(key)
+    this.validateValue(value)
+    const expires_in = this.getExpiresIn(expiresIn)
+    if (expires_in !== 0) {
+      await this.create(key).set(this.getValue(value), expires_in)
+    }
+  }
+
+  async remove(key) {
+    this.validateKey(key)
+    await this.create(key).remove()
+  }
+
+  // virtual
+  async update(key) {
+    this.validateKey(key)
+  }
+
+  async ttl(key) {
+    this.validateKey(key)
+    // 后续考虑支持
+  }
+
+  async fallback(key) {
+    return {
+      value: null,
+      duration: -1
+    }
+  }
+
+  getKeyString(key) {
+    const keyArray = [Storage.Prefix]
+    this._keys.forEach((name) => {
+      keyArray.push(key[name])
+    })
+    keyArray.push(this._type)
+    return keyArray.join(':')
+  }
+
+  getValue(value) {
+    return value
+  }
+
+  getExpiresIn(value) {
+    if (value !== undefined) {
+      return value
+    }
+    return -1
+  }
+
+  validateKey(key) {
+    Validator.Key(this._keys, key)
+  }
+
+  validateValue(value) {
+    Validator.Value(value)
+  }
+
+  create(key, fallback) {
+    const keyString = this.getKeyString(key)
+    const options = {
+      layers: [{
+        type: 'database',
+        key: keyString
+      }, {
+        type: 'redis',
+        key: keyString
+      }]
+    }
+
+    const _this = this
+    return new CacheKeyCascade({
+      ...options,
+      fallback: async function() {
+        if (fallback) {
+          return fallback(key)
+        } else if (_this.fallback) {
+          return _this.fallback(key)
+        }
+      }
+    })
+  }
+}
+Storage.Prefix = "uni-id"
+
+module.exports = {
+  Storage
+};