首次提交

2026-07-13 12:06:16 +08:00
commit e3c810b1a6
1690 changed files with 228324 additions and 0 deletions
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+/*jslint node: true */
+"use strict";
+
+var util = require('util'),
+    qlobber = require('..'),
+    Qlobber = qlobber.Qlobber;
+
+function QlobberSub (options)
+{
+    Qlobber.call(this, options);
+    this.subscriptionsCount = 0;
+}
+
+util.inherits(QlobberSub, Qlobber);
+
+QlobberSub.prototype._initial_value = function (val)
+{
+    this.subscriptionsCount += 1;
+
+    let r = {
+        topic: val.topic,
+        clientMap: new Map().set(val.clientId, { qos: val.qos, rh: val.rh, rap: val.rap, nl: val.nl }),
+    };
+
+    r[Symbol.iterator] = function* (topic)
+    {
+        if (topic === undefined)
+        {
+            for (let [clientId, sub] of r.clientMap)
+            {
+                yield { topic: r.topic, clientId, ...sub };
+            }
+        }
+        else if (r.topic === topic)
+        {
+            for (let [clientId, sub] of r.clientMap)
+            {
+                yield { clientId, ...sub };
+            }
+        }
+    };
+
+    return r;
+};
+
+QlobberSub.prototype._add_value = function (existing, val)
+{
+    var clientMap = existing.clientMap,
+        size = clientMap.size;
+
+    clientMap.set(val.clientId, { qos: val.qos, rh: val.rh, rap: val.rap, nl: val.nl });
+
+    if (clientMap.size > size)
+    {
+        this.subscriptionsCount += 1;
+    }
+};
+
+QlobberSub.prototype._add_values = function (dest, existing, topic)
+{
+    if (topic === undefined)
+    {
+        for (let [clientId, sub] of existing.clientMap)
+        {
+            dest.push({ clientId, topic: existing.topic, ...sub });
+        }
+    }
+    else if (existing.topic === topic)
+    {
+        for (let [clientId, sub] of existing.clientMap)
+        {
+            dest.push({ clientId,...sub });
+        }
+    }
+};
+
+QlobberSub.prototype._remove_value = function (existing, val)
+{
+    var clientMap = existing.clientMap,
+        size_before = clientMap.size;
+
+    clientMap.delete(val.clientId);
+
+    var size_after = clientMap.size;
+
+    if (size_after < size_before)
+    {
+        this.subscriptionsCount -= 1;
+    }
+
+    return size_after === 0;
+};
+
+// Returns whether client is last subscriber to topic
+QlobberSub.prototype.test_values = function (existing, val)
+{
+    var clientMap = existing.clientMap;
+
+    return (existing.topic === val.topic) &&
+           (clientMap.size === 1) &&
+           clientMap.has(val.clientId);
+};
+
+QlobberSub.prototype.match = function (topic, ctx)
+{
+    return this._match([], 0, topic.split(this._separator), this._trie, ctx);
+};
+
+QlobberSub.prototype.clear = function ()
+{
+    this.subscriptionsCount = 0;
+    return Qlobber.prototype.clear.call(this);
+};
+
+QlobberSub.set_native = function (qlobber_native)
+{
+    const wrap_native = require('../lib/wrap_native.js');
+    QlobberSub.native = wrap_native(qlobber_native.QlobberSub, QlobberSub);
+    return module.exports;
+};
+
+module.exports = QlobberSub;