{"id":825,"date":"2018-07-20T08:35:58","date_gmt":"2018-07-20T00:35:58","guid":{"rendered":"https:\/\/blog.jsjs.org\/?p=825"},"modified":"2018-07-20T08:35:58","modified_gmt":"2018-07-20T00:35:58","slug":"%e3%80%90%e5%88%86%e5%b8%83%e5%bc%8f%e3%80%91zookeeper%e5%ba%8f%e5%88%97%e5%8c%96%e5%8f%8a%e9%80%9a%e4%bf%a1%e5%8d%8f%e8%ae%ae","status":"publish","type":"post","link":"https:\/\/blog.jsjs.org\/?p=825","title":{"rendered":"\u3010\u5206\u5e03\u5f0f\u3011Zookeeper\u5e8f\u5217\u5316\u53ca\u901a\u4fe1\u534f\u8bae"},"content":{"rendered":"<p><strong>\u4e00\u3001\u524d\u8a00<\/strong><\/p>\n<p>\u524d\u9762\u4ecb\u7ecd\u4e86Zookeeper\u7684\u7cfb\u7edf\u6a21\u578b\uff0c\u4e0b\u9762\u8fdb\u4e00\u6b65\u5b66\u4e60Zookeeper\u7684\u5e95\u5c42\u5e8f\u5217\u5316\u673a\u5236\uff0cZookeeper\u7684\u5ba2\u6237\u7aef\u4e0e\u670d\u52a1\u7aef\u4e4b\u95f4\u4f1a\u8fdb\u884c\u4e00\u7cfb\u5217\u7684\u7f51\u7edc\u901a\u4fe1\u6765\u5b9e\u73b0\u6570\u636e\u4f20\u8f93\uff0cZookeeper\u4f7f\u7528Jute\u7ec4\u4ef6\u6765\u5b8c\u6210\u6570\u636e\u7684\u5e8f\u5217\u5316\u548c\u53cd\u5e8f\u5217\u5316\u64cd\u4f5c\u3002<\/p>\n<p><strong>\u4e8c\u3001Jute<\/strong><\/p>\n<p>Jute\u662fZookeeper\u5e95\u5c42\u5e8f\u5217\u5316\u7ec4\u4ef6\uff0c\u5176\u7528\u4e8eZookeeper\u8fdb\u884c\u7f51\u7edc\u6570\u636e\u4f20\u8f93\u548c\u672c\u5730\u78c1\u76d8\u6570\u636e\u5b58\u50a8\u7684\u5e8f\u5217\u5316\u548c\u53cd\u5e8f\u5217\u5316\u5de5\u4f5c\u3002<\/p>\n<p>2.1 Jute\u5e8f\u5217\u5316<\/p>\n<p>MockReHeader\u5b9e\u4f53\u7c7b<\/p>\n<div class=\"cnblogs_code\"><img decoding=\"async\" id=\"code_img_opened_3a63f353-384a-447a-9168-8c0b49387413\" class=\"code_img_opened\" src=\"http:\/\/images.cnblogs.com\/OutliningIndicators\/ExpandedBlockStart.gif\" alt=\"\" \/><\/p>\n<div id=\"cnblogs_code_open_3a63f353-384a-447a-9168-8c0b49387413\" class=\"cnblogs_code_hide\">\n<div class=\"cnblogs_code_toolbar\"><span class=\"cnblogs_code_copy\"><a title=\"\u590d\u5236\u4ee3\u7801\"><img decoding=\"async\" src=\"http:\/\/common.cnblogs.com\/images\/copycode.gif\" alt=\"\u590d\u5236\u4ee3\u7801\" \/><\/a><\/span><\/div>\n<pre>package com.hust.grid.leesf.jute.examples;\n\nimport org.apache.jute.InputArchive;\nimport org.apache.jute.OutputArchive;\nimport org.apache.jute.Record;\n\npublic class MockReHeader implements Record {\n    private long sessionId;\n    private String type;\n\n    public MockReHeader() {\n\n    }\n\n    public MockReHeader(long sessionId, String type) {\n        this.sessionId = sessionId;\n        this.type = type;\n    }\n\n    public void setSessionId(long sessionId) {\n        this.sessionId = sessionId;\n    }\n\n    public void setType(String type) {\n        this.type = type;\n    }\n\n    public long getSessionId() {\n        return sessionId;\n    }\n\n    public String getType() {\n        return type;\n    }\n\n    public void serialize(OutputArchive oa, String tag) throws java.io.IOException {\n        oa.startRecord(this, tag);\n        oa.writeLong(sessionId, \"sessionId\");\n        oa.writeString(type, \"type\");\n        oa.endRecord(this, tag);\n    }\n\n    public void deserialize(InputArchive ia, String tag) throws java.io.IOException {\n        ia.startRecord(tag);\n        this.sessionId = ia.readLong(\"sessionId\");\n        this.type = ia.readString(\"type\");\n        ia.endRecord(tag);\n    }\n\n    @Override\n    public String toString() {\n        return \"sessionId = \" + sessionId + \", type = \" + type;\n    }\n}<\/pre>\n<div class=\"cnblogs_code_toolbar\"><span class=\"cnblogs_code_copy\"><a title=\"\u590d\u5236\u4ee3\u7801\"><img decoding=\"async\" src=\"http:\/\/common.cnblogs.com\/images\/copycode.gif\" alt=\"\u590d\u5236\u4ee3\u7801\" \/><\/a><\/span><\/div>\n<\/div>\n<\/div>\n<p>Main<\/p>\n<div class=\"cnblogs_code\"><img decoding=\"async\" id=\"code_img_opened_75b673c8-b8f7-4186-8bc8-a234eb37c450\" class=\"code_img_opened\" src=\"http:\/\/images.cnblogs.com\/OutliningIndicators\/ExpandedBlockStart.gif\" alt=\"\" \/><\/p>\n<div id=\"cnblogs_code_open_75b673c8-b8f7-4186-8bc8-a234eb37c450\" class=\"cnblogs_code_hide\">\n<div class=\"cnblogs_code_toolbar\"><span class=\"cnblogs_code_copy\"><a title=\"\u590d\u5236\u4ee3\u7801\"><img decoding=\"async\" src=\"http:\/\/common.cnblogs.com\/images\/copycode.gif\" alt=\"\u590d\u5236\u4ee3\u7801\" \/><\/a><\/span><\/div>\n<pre>package com.hust.grid.leesf.jute.examples;\n\nimport java.io.ByteArrayOutputStream;\nimport java.io.IOException;\nimport java.nio.ByteBuffer;\n\nimport org.apache.jute.BinaryInputArchive;\nimport org.apache.jute.BinaryOutputArchive;\nimport org.apache.zookeeper.server.ByteBufferInputStream;\n\npublic class Main {\n    public static void main(String[] args) throws IOException {\n        ByteArrayOutputStream baos = new ByteArrayOutputStream();\n        BinaryOutputArchive boa = BinaryOutputArchive.getArchive(baos);\n        new MockReHeader(0x3421eccb92a34el, \"ping\").serialize(boa, \"header\");\n\n        ByteBuffer bb = ByteBuffer.wrap(baos.toByteArray());\n\n        ByteBufferInputStream bbis = new ByteBufferInputStream(bb);\n        BinaryInputArchive bia = BinaryInputArchive.getArchive(bbis);\n\n        MockReHeader header2 = new MockReHeader();\n        System.out.println(header2);\n        header2.deserialize(bia, \"header\");\n        System.out.println(header2);\n        bbis.close();\n        baos.close();\n    }\n}<\/pre>\n<div class=\"cnblogs_code_toolbar\"><span class=\"cnblogs_code_copy\"><a title=\"\u590d\u5236\u4ee3\u7801\"><img decoding=\"async\" src=\"http:\/\/common.cnblogs.com\/images\/copycode.gif\" alt=\"\u590d\u5236\u4ee3\u7801\" \/><\/a><\/span><\/div>\n<\/div>\n<\/div>\n<p>\u8fd0\u884c\u7ed3\u679c<\/p>\n<div class=\"cnblogs_code\">\n<pre>sessionId = 0, type = null\nsessionId = 14673999700337486, type = ping<\/pre>\n<\/div>\n<p>\u8bf4\u660e\uff1a\u53ef\u4ee5\u770b\u5230MockReHeader\u5b9e\u4f53\u7c7b\u9700\u8981\u5b9e\u73b0Record\u63a5\u53e3\u5e76\u4e14\u5b9e\u73b0serialize\u548cdeserialize\u65b9\u6cd5\u3002<\/p>\n<p>OutputArchive\u548cInputArchive\u5206\u522b\u662fJute\u5e95\u5c42\u7684\u5e8f\u5217\u5316\u5668\u548c\u53cd\u5e8f\u5217\u5316\u5668\u3002<\/p>\n<p>\u5728Zookeeper\u7684src\u6587\u4ef6\u5939\u4e0b\u6709zookeeper.jute\u6587\u4ef6\uff0c\u5176\u5185\u5bb9\u5982\u4e0b<\/p>\n<div class=\"cnblogs_code\"><img decoding=\"async\" id=\"code_img_opened_0c6bb59c-80d2-456f-87eb-eb3429cd8498\" class=\"code_img_opened\" src=\"http:\/\/images.cnblogs.com\/OutliningIndicators\/ExpandedBlockStart.gif\" alt=\"\" \/><\/p>\n<div id=\"cnblogs_code_open_0c6bb59c-80d2-456f-87eb-eb3429cd8498\" class=\"cnblogs_code_hide\">\n<div class=\"cnblogs_code_toolbar\"><span class=\"cnblogs_code_copy\"><a title=\"\u590d\u5236\u4ee3\u7801\"><img decoding=\"async\" src=\"http:\/\/common.cnblogs.com\/images\/copycode.gif\" alt=\"\u590d\u5236\u4ee3\u7801\" \/><\/a><\/span><\/div>\n<pre>\/**\n * Licensed to the Apache Software Foundation (ASF) under one\n * or more contributor license agreements.  See the NOTICE file\n * distributed with this work for additional information\n * regarding copyright ownership.  The ASF licenses this file\n * to you under the Apache License, Version 2.0 (the\n * \"License\"); you may not use this file except in compliance\n * with the License.  You may obtain a copy of the License at\n *\n *     http:\/\/www.apache.org\/licenses\/LICENSE-2.0\n *\n * Unless required by applicable law or agreed to in writing, software\n * distributed under the License is distributed on an \"AS IS\" BASIS,\n * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.\n * See the License for the specific language governing permissions and\n * limitations under the License.\n *\/\n\nmodule org.apache.zookeeper.data {\n    class Id {\n        ustring scheme;\n        ustring id;\n    }\n    class ACL {\n        int perms;\n        Id id;\n    }\n    \/\/ information shared with the client\n    class Stat {\n        long czxid;      \/\/ created zxid\n        long mzxid;      \/\/ last modified zxid\n        long ctime;      \/\/ created\n        long mtime;      \/\/ last modified\n        int version;     \/\/ version\n        int cversion;    \/\/ child version\n        int aversion;    \/\/ acl version\n        long ephemeralOwner; \/\/ owner id if ephemeral, 0 otw\n        int dataLength;  \/\/length of the data in the node\n        int numChildren; \/\/number of children of this node\n        long pzxid;      \/\/ last modified children\n    }\n    \/\/ information explicitly stored by the server persistently\n    class StatPersisted {\n        long czxid;      \/\/ created zxid\n        long mzxid;      \/\/ last modified zxid\n        long ctime;      \/\/ created\n        long mtime;      \/\/ last modified\n        int version;     \/\/ version\n        int cversion;    \/\/ child version\n        int aversion;    \/\/ acl version\n        long ephemeralOwner; \/\/ owner id if ephemeral, 0 otw\n        long pzxid;      \/\/ last modified children\n    }\n\n   \/\/ information explicitly stored by the version 1 database of servers\n   class StatPersistedV1 {\n       long czxid; \/\/created zxid\n       long mzxid; \/\/last modified zxid\n       long ctime; \/\/created\n       long mtime; \/\/last modified\n       int version; \/\/version\n       int cversion; \/\/child version\n       int aversion; \/\/acl version\n       long ephemeralOwner; \/\/owner id if ephemeral. 0 otw\n    }\n}\n\nmodule org.apache.zookeeper.proto {\n    class ConnectRequest {\n        int protocolVersion;\n        long lastZxidSeen;\n        int timeOut;\n        long sessionId;\n        buffer passwd;\n    }\n    class ConnectResponse {\n        int protocolVersion;\n        int timeOut;\n        long sessionId;\n        buffer passwd;\n    }\n    class SetWatches {\n        long relativeZxid;\n        vector&lt;ustring&gt;dataWatches;\n        vector&lt;ustring&gt;existWatches;\n        vector&lt;ustring&gt;childWatches;\n    }\n    class RequestHeader {\n        int xid;\n        int type;\n    }\n    class MultiHeader {\n        int type;\n        boolean done;\n        int err;\n    }\n    class AuthPacket {\n        int type;\n        ustring scheme;\n        buffer auth;\n    }\n    class ReplyHeader {\n        int xid;\n        long zxid;\n        int err;\n    }\n    class GetDataRequest {\n        ustring path;\n        boolean watch;\n    }\n    class SetDataRequest {\n        ustring path;\n        buffer data;\n        int version;\n    }\n    class SetDataResponse {\n        org.apache.zookeeper.data.Stat stat;\n    }\n    class GetSASLRequest {\n        buffer token;\n    }\n    class SetSASLRequest {\n        buffer token;\n    }\n    class SetSASLResponse {\n        buffer token;\n    }\n    class CreateRequest {\n        ustring path;\n        buffer data;\n        vector&lt;org.apache.zookeeper.data.ACL&gt; acl;\n        int flags;\n    }\n    class DeleteRequest {\n        ustring path;\n        int version;\n    }\n    class GetChildrenRequest {\n        ustring path;\n        boolean watch;\n    }\n    class GetChildren2Request {\n        ustring path;\n        boolean watch;\n    }\n    class CheckVersionRequest {\n        ustring path;\n        int version;\n    }\n    class GetMaxChildrenRequest {\n        ustring path;\n    }\n    class GetMaxChildrenResponse {\n        int max;\n    }\n    class SetMaxChildrenRequest {\n        ustring path;\n        int max;\n    }\n    class SyncRequest {\n        ustring path;\n    }\n    class SyncResponse {\n        ustring path;\n    }\n    class GetACLRequest {\n        ustring path;\n    }\n    class SetACLRequest {\n        ustring path;\n        vector&lt;org.apache.zookeeper.data.ACL&gt; acl;\n        int version;\n    }\n    class SetACLResponse {\n        org.apache.zookeeper.data.Stat stat;\n    }\n    class WatcherEvent {\n        int type;  \/\/ event type\n        int state; \/\/ state of the Keeper client runtime\n        ustring path;\n    }\n    class ErrorResponse {\n        int err;\n    }\n    class CreateResponse {\n        ustring path;\n    }\n    class ExistsRequest {\n        ustring path;\n        boolean watch;\n    }\n    class ExistsResponse {\n        org.apache.zookeeper.data.Stat stat;\n    }\n    class GetDataResponse {\n        buffer data;\n        org.apache.zookeeper.data.Stat stat;\n    }\n    class GetChildrenResponse {\n        vector&lt;ustring&gt; children;\n    }\n    class GetChildren2Response {\n        vector&lt;ustring&gt; children;\n        org.apache.zookeeper.data.Stat stat;\n    }\n    class GetACLResponse {\n        vector&lt;org.apache.zookeeper.data.ACL&gt; acl;\n        org.apache.zookeeper.data.Stat stat;\n    }\n}\n\nmodule org.apache.zookeeper.server.quorum {\n    class LearnerInfo {\n        long serverid;\n        int protocolVersion;\n    }\n    class QuorumPacket {\n        int type; \/\/ Request, Ack, Commit, Ping\n        long zxid;\n        buffer data; \/\/ Only significant when type is request\n        vector&lt;org.apache.zookeeper.data.Id&gt; authinfo;\n    }\n}\n\nmodule org.apache.zookeeper.server.persistence {\n    class FileHeader {\n        int magic;\n        int version;\n        long dbid;\n    }\n}\n\nmodule org.apache.zookeeper.txn {\n    class TxnHeader {\n        long clientId;\n        int cxid;\n        long zxid;\n        long time;\n        int type;\n    }\n    class CreateTxnV0 {\n        ustring path;\n        buffer data;\n        vector&lt;org.apache.zookeeper.data.ACL&gt; acl;\n        boolean ephemeral;\n    }\n    class CreateTxn {\n        ustring path;\n        buffer data;\n        vector&lt;org.apache.zookeeper.data.ACL&gt; acl;\n        boolean ephemeral;\n        int parentCVersion;\n    }\n    class DeleteTxn {\n        ustring path;\n    }\n    class SetDataTxn {\n        ustring path;\n        buffer data;\n        int version;\n    }\n    class CheckVersionTxn {\n        ustring path;\n        int version;\n    }\n    class SetACLTxn {\n        ustring path;\n        vector&lt;org.apache.zookeeper.data.ACL&gt; acl;\n        int version;\n    }\n    class SetMaxChildrenTxn {\n        ustring path;\n        int max;\n    }\n    class CreateSessionTxn {\n        int timeOut;\n    }\n    class ErrorTxn {\n        int err;\n    }\n    class Txn {\n        int type;\n        buffer data;\n    }\n    class MultiTxn {\n        vector&lt;org.apache.zookeeper.txn.Txn&gt; txns;\n    }\n}<\/pre>\n<div class=\"cnblogs_code_toolbar\"><span class=\"cnblogs_code_copy\"><a title=\"\u590d\u5236\u4ee3\u7801\"><img decoding=\"async\" src=\"http:\/\/common.cnblogs.com\/images\/copycode.gif\" alt=\"\u590d\u5236\u4ee3\u7801\" \/><\/a><\/span><\/div>\n<\/div>\n<\/div>\n<p>\u5176\u5b9a\u4e49\u4e86\u6240\u6709\u7684\u5b9e\u4f53\u7c7b\u7684\u6240\u5c5e\u5305\u540d\u3001\u7c7b\u540d\u53ca\u7c7b\u7684\u6240\u6709\u6210\u5458\u53d8\u91cf\u548c\u7c7b\u578b\uff0c\u8be5\u6587\u4ef6\u4f1a\u5728\u6e90\u4ee3\u7801\u7f16\u8bd1\u65f6\uff0cJute\u4f1a\u4f7f\u7528\u4e0d\u540c\u7684\u4ee3\u7801\u751f\u6210\u5668\u4e3a\u8fd9\u4e9b\u7c7b\u5b9a\u4e49\u751f\u6210\u5b9e\u9645\u7f16\u7a0b\u8bed\u8a00\u7684\u7c7b\u6587\u4ef6\uff0c\u5982java\u8bed\u8a00\u751f\u6210\u7684\u7c7b\u6587\u4ef6\u4fdd\u5b58\u5728src\/java\/generated\u76ee\u5f55\u4e0b\uff0c\u6bcf\u4e2a\u7c7b\u90fd\u4f1a\u5b9e\u73b0Record\u63a5\u53e3\u3002<\/p>\n<p><strong>\u4e09\u3001\u901a\u4fe1\u534f\u8bae<\/strong><\/p>\n<p>\u57fa\u4e8eTCP\/IP\u534f\u8bae\uff0cZookeeper\u5b9e\u73b0\u4e86\u81ea\u5df1\u7684\u901a\u4fe1\u534f\u8bae\u6765\u73a9\u6309\u6210\u5ba2\u6237\u7aef\u4e0e\u670d\u52a1\u7aef\u3001\u670d\u52a1\u7aef\u4e0e\u670d\u52a1\u7aef\u4e4b\u95f4\u7684\u7f51\u7edc\u901a\u4fe1\uff0c\u5bf9\u4e8e\u8bf7\u6c42\uff0c\u4e3b\u8981\u5305\u542b\u8bf7\u6c42\u5934\u548c\u8bf7\u6c42\u4f53\uff0c\u5bf9\u4e8e\u54cd\u5e94\uff0c\u4e3b\u8981\u5305\u542b\u54cd\u5e94\u5934\u548c\u54cd\u5e94\u4f53\u3002<\/p>\n<p><img decoding=\"async\" src=\"http:\/\/images2015.cnblogs.com\/blog\/616953\/201611\/616953-20161124095349737-1635431714.png\" alt=\"\" \/><\/p>\n<p>3.1 \u8bf7\u6c42\u534f\u8bae<\/p>\n<p>\u5bf9\u4e8e\u8bf7\u6c42\u534f\u8bae\u800c\u8a00\uff0c\u5982\u4e0b\u4e3a\u83b7\u53d6\u8282\u70b9\u6570\u636e\u8bf7\u6c42\u7684\u5b8c\u6574\u534f\u8bae\u5b9a\u4e49<\/p>\n<p><img decoding=\"async\" src=\"http:\/\/images2015.cnblogs.com\/blog\/616953\/201611\/616953-20161124103957878-1344513149.png\" alt=\"\" \/><\/p>\n<div class=\"cnblogs_code\">\n<pre>    class RequestHeader {\n        int xid;\n        int type;\n    }<\/pre>\n<\/div>\n<p>\u4ecezookeeper.jute\u4e2d\u53ef\u77e5RequestHeader\u5305\u542b\u4e86xid\u548ctype\uff0cxid\u7528\u4e8e\u8bb0\u5f55\u5ba2\u6237\u7aef\u8bf7\u6c42\u53d1\u8d77\u7684\u5148\u540e\u5e8f\u53f7\uff0c\u7528\u6765\u786e\u4fdd\u5355\u4e2a\u5ba2\u6237\u7aef\u8bf7\u6c42\u7684\u54cd\u5e94\u987a\u5e8f\uff0ctype\u4ee3\u8868\u8bf7\u6c42\u7684\u64cd\u4f5c\u7c7b\u578b\uff0c\u5982\u521b\u5efa\u8282\u70b9\uff08OpCode.create\uff09\u3001\u5220\u9664\u8282\u70b9\uff08OpCode.delete\uff09\u3001\u83b7\u53d6\u8282\u70b9\u6570\u636e\uff08OpCode.getData\uff09\u3002<\/p>\n<p>\u534f\u8bae\u7684\u8bf7\u6c42\u4e3b\u4f53\u5185\u5bb9\u90e8\u5206\uff0c\u5305\u542b\u4e86\u8bf7\u6c42\u7684\u6240\u6709\u64cd\u4f5c\u5185\u5bb9\uff0c\u4e0d\u540c\u7684\u8bf7\u6c42\u7c7b\u578b\u8bf7\u6c42\u4f53\u4e0d\u540c\u3002\u5bf9\u4e8e\u4f1a\u8bdd\u521b\u5efa\u800c\u8a00\uff0c\u5176\u8bf7\u6c42\u4f53\u5982\u4e0b<\/p>\n<div class=\"cnblogs_code\">\n<div class=\"cnblogs_code_toolbar\"><span class=\"cnblogs_code_copy\"><a title=\"\u590d\u5236\u4ee3\u7801\"><img decoding=\"async\" src=\"http:\/\/common.cnblogs.com\/images\/copycode.gif\" alt=\"\u590d\u5236\u4ee3\u7801\" \/><\/a><\/span><\/div>\n<pre>    class ConnectRequest {\n        int protocolVersion;\n        long lastZxidSeen;\n        int timeOut;\n        long sessionId;\n        buffer passwd;\n    }<\/pre>\n<div class=\"cnblogs_code_toolbar\"><span class=\"cnblogs_code_copy\"><a title=\"\u590d\u5236\u4ee3\u7801\"><img decoding=\"async\" src=\"http:\/\/common.cnblogs.com\/images\/copycode.gif\" alt=\"\u590d\u5236\u4ee3\u7801\" \/><\/a><\/span><\/div>\n<\/div>\n<p>Zookeeper\u5ba2\u6237\u7aef\u548c\u670d\u52a1\u5668\u5728\u521b\u5efa\u4f1a\u8bdd\u65f6\uff0c\u4f1a\u53d1\u9001ConnectRequest\u8bf7\u6c42\uff0c\u8be5\u8bf7\u6c42\u5305\u542b\u534f\u8bae\u7248\u672c\u53f7protocolVersion\u3001\u6700\u8fd1\u4e00\u6b21\u63a5\u6536\u5230\u670d\u52a1\u5668ZXID lastZxidSeen\u3001\u4f1a\u8bdd\u8d85\u65f6\u65f6\u95f4timeOut\u3001\u4f1a\u8bdd\u6807\u8bc6sessionId\u548c\u4f1a\u8bdd\u5bc6\u7801passwd\u3002<\/p>\n<p>\u5bf9\u4e8e\u83b7\u53d6\u8282\u70b9\u6570\u636e\u800c\u8a00\uff0c\u5176\u8bf7\u6c42\u4f53\u5982\u4e0b<\/p>\n<div class=\"cnblogs_code\">\n<pre>    class GetDataRequest {\n        ustring path;\n        boolean watch;\n    }<\/pre>\n<\/div>\n<p>Zookeeper\u5ba2\u6237\u7aef\u5728\u5411\u670d\u52a1\u5668\u53d1\u9001\u8282\u70b9\u6570\u636e\u8bf7\u6c42\u65f6\uff0c\u4f1a\u53d1\u9001GetDataRequest\u8bf7\u6c42\uff0c\u8be5\u8bf7\u6c42\u5305\u542b\u4e86\u6570\u636e\u8282\u70b9\u8def\u5f84path\u3001\u662f\u5426\u6ce8\u518cWatcher\u7684\u6807\u8bc6watch\u3002<\/p>\n<p>\u5bf9\u4e8e\u66f4\u65b0\u8282\u70b9\u6570\u636e\u800c\u8a00\uff0c\u5176\u8bf7\u6c42\u4f53\u5982\u4e0b<\/p>\n<div class=\"cnblogs_code\">\n<pre>    class SetDataRequest {\n        ustring path;\n        buffer data;\n        int version;\n    }<\/pre>\n<\/div>\n<p>Zookeeper\u5ba2\u6237\u7aef\u5728\u5411\u670d\u52a1\u5668\u53d1\u9001\u66f4\u65b0\u8282\u70b9\u6570\u636e\u8bf7\u6c42\u65f6\uff0c\u4f1a\u53d1\u9001SetDataRequest\u8bf7\u6c42\uff0c\u8be5\u8bf7\u6c42\u5305\u542b\u4e86\u6570\u636e\u8282\u70b9\u8def\u5f84path\u3001\u6570\u636e\u5185\u5bb9data\u3001\u8282\u70b9\u6570\u636e\u7684\u671f\u671b\u7248\u672c\u53f7version\u3002<\/p>\n<p>\u9488\u5bf9\u4e0d\u540c\u7684\u8bf7\u6c42\u7c7b\u578b\uff0cZookeeper\u90fd\u4f1a\u5b9a\u4e49\u4e0d\u540c\u7684\u8bf7\u6c42\u4f53\uff0c\u53ef\u4ee5\u5728zookeeper.jute\u4e2d\u67e5\u770b\u3002<\/p>\n<p>3.2 \u54cd\u5e94\u534f\u8bae<\/p>\n<p>\u5bf9\u4e8e\u54cd\u5e94\u534f\u8bae\u800c\u8a00\uff0c\u5982\u4e0b\u4e3a\u83b7\u53d6\u8282\u70b9\u6570\u636e\u54cd\u5e94\u7684\u5b8c\u6574\u534f\u8bae\u5b9a\u4e49<\/p>\n<p><img decoding=\"async\" src=\"http:\/\/images2015.cnblogs.com\/blog\/616953\/201611\/616953-20161124105254362-1595181138.png\" alt=\"\" \/><\/p>\n<p>\u54cd\u5e94\u5934\u4e2d\u5305\u542b\u4e86\u6bcf\u4e2a\u54cd\u5e94\u6700\u57fa\u672c\u7684\u4fe1\u606f\uff0c\u5305\u62ecxid\u3001zxid\u548cerr\uff1a<\/p>\n<div class=\"cnblogs_code\">\n<pre>    class ReplyHeader {\n        int xid;\n        long zxid;\n        int err;\n    }<\/pre>\n<\/div>\n<p>xid\u4e0e\u8bf7\u6c42\u5934\u4e2d\u7684xid\u4e00\u81f4\uff0czxid\u8868\u793aZookeeper\u670d\u52a1\u5668\u4e0a\u5f53\u524d\u6700\u65b0\u7684\u4e8b\u52a1ID\uff0cerr\u5219\u662f\u4e00\u4e2a\u9519\u8bef\u7801\uff0c\u8868\u793a\u5f53\u8bf7\u6c42\u5904\u7406\u8fc7\u7a0b\u51fa\u73b0\u5f02\u5e38\u60c5\u51b5\u65f6\uff0c\u5c31\u4f1a\u5728\u9519\u8bef\u7801\u4e2d\u6807\u8bc6\u51fa\u6765\uff0c\u5e38\u89c1\u7684\u5305\u62ec\u5904\u7406\u6210\u529f\uff08Code.OK\uff09\u3001\u8282\u70b9\u4e0d\u5b58\u5728\uff08Code.NONODE\uff09\u3001\u6ca1\u6709\u6743\u9650\uff08Code.NOAUTH\uff09\u3002<\/p>\n<p>\u534f\u8bae\u7684\u54cd\u5e94\u4e3b\u4f53\u5185\u5bb9\u90e8\u5206\uff0c\u5305\u542b\u4e86\u54cd\u5e94\u7684\u6240\u6709\u6570\u636e\uff0c\u4e0d\u540c\u7684\u54cd\u5e94\u7c7b\u578b\u8bf7\u6c42\u4f53\u4e0d\u540c\u3002\u5bf9\u4e8e\u4f1a\u8bdd\u521b\u5efa\u800c\u8a00\uff0c\u5176\u54cd\u5e94\u4f53\u5982\u4e0b<\/p>\n<div class=\"cnblogs_code\">\n<div class=\"cnblogs_code_toolbar\"><span class=\"cnblogs_code_copy\"><a title=\"\u590d\u5236\u4ee3\u7801\"><img decoding=\"async\" src=\"http:\/\/common.cnblogs.com\/images\/copycode.gif\" alt=\"\u590d\u5236\u4ee3\u7801\" \/><\/a><\/span><\/div>\n<pre>    class ConnectResponse {\n        int protocolVersion;\n        int timeOut;\n        long sessionId;\n        buffer passwd;\n    }<\/pre>\n<div class=\"cnblogs_code_toolbar\"><span class=\"cnblogs_code_copy\"><a title=\"\u590d\u5236\u4ee3\u7801\"><img decoding=\"async\" src=\"http:\/\/common.cnblogs.com\/images\/copycode.gif\" alt=\"\u590d\u5236\u4ee3\u7801\" \/><\/a><\/span><\/div>\n<\/div>\n<p>\u9488\u5bf9\u5ba2\u6237\u7aef\u7684\u4f1a\u8bdd\u521b\u5efa\u8bf7\u6c42\uff0c\u670d\u52a1\u7aef\u4f1a\u8fd4\u56de\u5ba2\u6237\u7aef\u4e00\u4e2aConnectResponse\u54cd\u5e94\uff0c\u8be5\u54cd\u5e94\u4f53\u5305\u542b\u4e86\u7248\u672c\u53f7protocolVersion\u3001\u4f1a\u8bdd\u7684\u8d85\u65f6\u65f6\u95f4timeOut\u3001\u4f1a\u8bdd\u6807\u8bc6sessionId\u548c\u4f1a\u8bdd\u5bc6\u7801passwd\u3002<\/p>\n<p>\u5bf9\u4e8e\u83b7\u53d6\u8282\u70b9\u6570\u636e\u800c\u8a00\uff0c\u5176\u54cd\u5e94\u4f53\u5982\u4e0b<\/p>\n<div class=\"cnblogs_code\">\n<pre>    class GetDataResponse {\n        buffer data;\n        org.apache.zookeeper.data.Stat stat;\n    }<\/pre>\n<\/div>\n<p>\u9488\u5bf9\u5ba2\u6237\u7aef\u7684\u83b7\u53d6\u8282\u70b9\u6570\u636e\u8bf7\u6c42\uff0c\u670d\u52a1\u7aef\u4f1a\u8fd4\u56de\u5ba2\u6237\u7aef\u4e00\u4e2aGetDataResponse\u54cd\u5e94\uff0c\u8be5\u54cd\u5e94\u4f53\u5305\u542b\u4e86\u6570\u636e\u8282\u70b9\u5185\u5bb9data\u3001\u8282\u70b9\u72b6\u6001stat\u3002<\/p>\n<p>\u5bf9\u4e8e\u66f4\u65b0\u8282\u70b9\u6570\u636e\u800c\u8a00\uff0c\u5176\u54cd\u5e94\u4f53\u5982\u4e0b<\/p>\n<div class=\"cnblogs_code\">\n<pre>    class SetDataResponse {\n        org.apache.zookeeper.data.Stat stat;\n    }<\/pre>\n<\/div>\n<p>\u9488\u5bf9\u5ba2\u6237\u7aef\u7684\u66f4\u65b0\u8282\u70b9\u6570\u636e\u8bf7\u6c42\uff0c\u670d\u52a1\u7aef\u4f1a\u8fd4\u56de\u5ba2\u6237\u7aef\u4e00\u4e2aSetDataResponse\u54cd\u5e94\uff0c\u8be5\u54cd\u5e94\u4f53\u5305\u542b\u4e86\u6700\u65b0\u7684\u8282\u70b9\u72b6\u6001stat\u3002<\/p>\n<p>\u9488\u5bf9\u4e0d\u540c\u7684\u54cd\u5e94\u7c7b\u578b\uff0cZookeeper\u90fd\u4f1a\u5b9a\u4e49\u4e0d\u540c\u7684\u54cd\u5e94\u4f53\uff0c\u53ef\u4ee5\u5728zookeeper.jute\u4e2d\u67e5\u770b\u3002<\/p>\n<p><strong>\u56db\u3001\u603b\u7ed3<\/strong><\/p>\n<p>\u672c\u7bc7\u535a\u5ba2\u8bb2\u89e3\u4e86Zookeeper\u4e2d\u7684\u5e8f\u5217\u5316\u673a\u5236\u548c\u5ba2\u6237\u7aef\u4e0e\u670d\u52a1\u7aef\u3001\u670d\u52a1\u7aef\u4e0e\u670d\u52a1\u7aef\u7684\u901a\u4fe1\u534f\u8bae\uff0c\u5185\u5bb9\u76f8\u5bf9\u8f83\u4e3a\u7b80\u5355\uff0c\u5bb9\u6613\u7406\u89e3\uff0c\u8c22\u8c22\u5404\u4f4d\u56ed\u53cb\u7684\u89c2\u770b~<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u4e00\u3001\u524d\u8a00 \u524d\u9762\u4ecb\u7ecd\u4e86Zookeeper\u7684\u7cfb\u7edf\u6a21\u578b\uff0c\u4e0b\u9762\u8fdb\u4e00\u6b65\u5b66\u4e60Zookeeper\u7684\u5e95\u5c42\u5e8f\u5217\u5316\u673a\u5236\uff0cZookeeper\u7684\u5ba2\u6237\u7aef\u4e0e\u670d\u52a1\u7aef\u4e4b\u95f4\u4f1a\u8fdb\u884c\u4e00\u7cfb\u5217\u7684\u7f51\u7edc\u901a\u4fe1\u6765\u5b9e\u73b0\u6570\u636e\u4f20\u8f93\uff0cZookeeper\u4f7f\u7528Jute\u7ec4\u4ef6\u6765\u5b8c\u6210\u6570\u636e\u7684\u5e8f\u5217\u5316\u548c\u53cd\u5e8f\u5217\u5316\u64cd\u4f5c\u3002 \u4e8c\u3001Jute Jute\u662fZookeeper\u5e95\u5c42\u5e8f\u5217\u5316\u7ec4\u4ef6\uff0c\u5176\u7528\u4e8eZookeeper\u8fdb\u884c\u7f51\u7edc\u6570\u636e\u4f20\u8f93\u548c\u672c\u5730\u78c1\u76d8\u6570\u636e\u5b58\u50a8\u7684\u5e8f\u5217\u5316\u548c\u53cd\u5e8f\u5217\u5316\u5de5\u4f5c\u3002 2.1 Jute\u5e8f\u5217\u5316 MockReHeader\u5b9e\u4f53\u7c7b package com.hust.grid.leesf.jute.examples; import org.apache.jute.InputArchive; import org.apache.jute.OutputArchive; import org.apache.jute.Record; public class MockReHeader implements Record [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"site-sidebar-layout":"default","site-content-layout":"","ast-site-content-layout":"default","site-content-style":"default","site-sidebar-style":"default","ast-global-header-display":"","ast-banner-title-visibility":"","ast-main-header-display":"","ast-hfb-above-header-display":"","ast-hfb-below-header-display":"","ast-hfb-mobile-header-display":"","site-post-title":"","ast-breadcrumbs-content":"","ast-featured-img":"","footer-sml-layout":"","ast-disable-related-posts":"","theme-transparent-header-meta":"","adv-header-id-meta":"","stick-header-meta":"","header-above-stick-meta":"","header-main-stick-meta":"","header-below-stick-meta":"","astra-migrate-meta-layouts":"default","ast-page-background-enabled":"default","ast-page-background-meta":{"desktop":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"tablet":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"mobile":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""}},"ast-content-background-meta":{"desktop":{"background-color":"var(--ast-global-color-4)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"tablet":{"background-color":"var(--ast-global-color-4)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"mobile":{"background-color":"var(--ast-global-color-4)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""}},"footnotes":""},"categories":[1],"tags":[],"class_list":["post-825","post","type-post","status-publish","format-standard","hentry","category-uncategorized"],"_links":{"self":[{"href":"https:\/\/blog.jsjs.org\/index.php?rest_route=\/wp\/v2\/posts\/825","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/blog.jsjs.org\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/blog.jsjs.org\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/blog.jsjs.org\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/blog.jsjs.org\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=825"}],"version-history":[{"count":0,"href":"https:\/\/blog.jsjs.org\/index.php?rest_route=\/wp\/v2\/posts\/825\/revisions"}],"wp:attachment":[{"href":"https:\/\/blog.jsjs.org\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=825"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/blog.jsjs.org\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=825"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/blog.jsjs.org\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=825"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}