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pcre-intro-and-a-simple-package
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    最近群里大佬发起了一个读书打卡活动，需要每天读一会书，在群里打卡分享感悟，争取一个月能读完一本书，说实话一天十分钟的读书时间倒是问题不大，不过每天都要打卡，而且一个月要读完一本书，其实难度还是有点大的，不过也想试试看。
    之前某某老大给自己立了个 flag，说要读一百本书，这对我来说挺难实现的，一则我也不喜欢书只读一小半，二则感觉对于喜欢看的内容范围还是比较有限制，可能也算是比较矫情，不爱追热门的各类东西，因为往往会有一些跟大众不一致的观点看法，显得格格不入。所以还是这个打卡活动可能会比较适合我，书是人类进步的阶梯。
    到现在是打卡了三天了，读的主要是白岩松的《幸福了吗》，对于白岩松，我们这一代人是比较熟悉，并且整体印象比较不错的一个央视主持人，从《焦点访谈》开始，到疫情期间的各类一线节目，可能对我来说是个三观比较正，敢于说一些真话的主持人，这中间其实是有个空档期，没怎么看电视，也不太关注了，只是在疫情期间的节目，还是一如既往地给人一种可靠的感觉，正好有一次偶然微信读书推荐了白岩松的这本书，就看了一部分，正好这次继续往下看，因为相对来讲不会很晦涩，并且从这位知名央视主持人的角度分享他的过往和想法看法，还是比较有意思的。
    从对汶川地震，08 年奥运等往事的回忆和一些细节的呈现，也让我了解比较多当时所不知道的，特别是汶川地震，那时的我还在读高中，真的是看着电视，作为“猛男”都忍不住泪目了，共和国之殇，多难兴邦，但是这对于当事人来说，都是一场醒不过来的噩梦。
    然后是对于足球的热爱，其实光这个就能掰扯很多，因为我不爱足球，只爱篮球，其中原因有的没的也挺多可以说的，但是看了他的书，才能比较深入的了解一个足球迷，对足球，对中国足球，对世界杯，对阿根廷的感情。
    接下去还是想能继续坚持下去，加油！

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    diff --git a/atom.xml b/atom.xml index 0bdeb0c939..f00b6f1de2 100644 --- a/atom.xml +++ b/atom.xml @@ -6,7 +6,7 @@ - 2021-01-31T15:02:44.242Z + 2021-02-07T15:13:39.017Z https://nicksxs.me/ @@ -16,6 +16,47 @@ Hexo + + 关于读书打卡与分享 + + https://nicksxs.me/2021/02/07/%E5%85%B3%E4%BA%8E%E8%AF%BB%E4%B9%A6%E6%89%93%E5%8D%A1%E4%B8%8E%E5%88%86%E4%BA%AB/ + 2021-02-07T15:13:39.000Z + 2021-02-07T15:13:39.017Z + + + + + + + + <p>最近群里大佬发起了一个读书打卡活动，需要每天读一会书，在群里打卡分享感悟，争取一个月能读完一本书，说实话一天十分钟的读书时间倒是问题不大，不过每天都要打卡，而且一个月要读完一本书，其实难度还是有点大的，不过也想试试看。<br>之前某某老大给自己立了个 + + + + + + + + + + + + + + + + + + + + + + + + + + + 聊聊 redis 缓存的应用问题 @@ -88,10 +129,10 @@ - - + + @@ -168,10 +209,10 @@ - - + + @@ -314,10 +355,10 @@ - - + + @@ -369,14 +410,14 @@ - - - + + + @@ -498,10 +539,10 @@ - - + + @@ -607,10 +648,10 @@ - - + + @@ -698,14 +739,14 @@ - - - + + + @@ -805,46 +846,4 @@ - - Leetcode 3 Longest Substring Without Repeating Characters 题解分析 - - https://nicksxs.me/2020/09/20/Leetcode-3-Longest-Substring-Without-Repeating-Characters-%E9%A2%98%E8%A7%A3%E5%88%86%E6%9E%90/ - 2020-09-20T13:40:23.000Z - 2020-09-20T13:45:17.000Z - - - - - - - - <p>又做了个题，看记录是以前用 C++写过的，现在捋一捋思路，用 Java 再写了一下，思路还是比较清晰的，但是边界细节处理得比较差</p> -<h2 id="简要介绍"><a href="#简要介绍" class="headerlink" - - - - - - - - - - - - - - - - - - - - - - - - - - - diff --git a/baidu_verify_Gl8jtoDV4z.html b/baidu_verify_Gl8jtoDV4z.html index f77c1bce08..03ac1fbc01 100644 --- a/baidu_verify_Gl8jtoDV4z.html +++ b/baidu_verify_Gl8jtoDV4z.html @@ -309,20 +309,20 @@
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    最近群里大佬发起了一个读书打卡活动，需要每天读一会书，在群里打卡分享感悟，争取一个月能读完一本书，说实话一天十分钟的读书时间倒是问题不大，不过每天都要打卡，而且一个月要读完一本书，其实难度还是有点大的，不过也想试试看。
    之前某某老大给自己立了个 flag，说要读一百本书，这对我来说挺难实现的，一则我也不喜欢书只读一小半，二则感觉对于喜欢看的内容范围还是比较有限制，可能也算是比较矫情，不爱追热门的各类东西，因为往往会有一些跟大众不一致的观点看法，显得格格不入。所以还是这个打卡活动可能会比较适合我，书是人类进步的阶梯。
    到现在是打卡了三天了，读的主要是白岩松的《幸福了吗》，对于白岩松，我们这一代人是比较熟悉，并且整体印象比较不错的一个央视主持人，从《焦点访谈》开始，到疫情期间的各类一线节目，可能对我来说是个三观比较正，敢于说一些真话的主持人，这中间其实是有个空档期，没怎么看电视，也不太关注了，只是在疫情期间的节目，还是一如既往地给人一种可靠的感觉，正好有一次偶然微信读书推荐了白岩松的这本书，就看了一部分，正好这次继续往下看，因为相对来讲不会很晦涩，并且从这位知名央视主持人的角度分享他的过往和想法看法，还是比较有意思的。
    从对汶川地震，08 年奥运等往事的回忆和一些细节的呈现，也让我了解比较多当时所不知道的，特别是汶川地震，那时的我还在读高中，真的是看着电视，作为“猛男”都忍不住泪目了，共和国之殇，多难兴邦，但是这对于当事人来说，都是一场醒不过来的噩梦。
    然后是对于足球的热爱，其实光这个就能掰扯很多，因为我不爱足球，只爱篮球，其中原因有的没的也挺多可以说的，但是看了他的书，才能比较深入的了解一个足球迷，对足球，对中国足球，对世界杯，对阿根廷的感情。
    接下去还是想能继续坚持下去，加油！

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    Java 中的这个话题也是比较常遇到的，关于这块原先也是比较忽略的，但是仔细想想又有点遗忘了就在这里记一下
    简单看下代码
    java.lang.Object#equals

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            return (this == obj);
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    对于所有对象的父类，equals 方法其实对比的就是对象的地址，也就是是否是同一个对象，试想如果像 Integer 或者 String 这种，我们没有重写 equals，那其实就等于是在用==，可能就没法达到我们的目的，所以像 String 这种常用的 jdk 类都是默认重写了
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            if (this == anObject) {
                return true;
            }
            if (anObject instanceof String) {
                String anotherString = (String)anObject;
                int n = value.length;
                if (n == anotherString.value.length) {
                    char v1[] = value;
                    char v2[] = anotherString.value;
                    int i = 0;
                    while (n-- != 0) {
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                            return false;
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            return false;
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    然后呢就是为啥一些书或者 effective java 中写了 equals 跟 hashCode 要一起重写，这里涉及到当对象作为 HashMap 的 key 的时候
    首先 HashMap 会使用 hashCode 去判断是否在同一个槽里，然后在通过 equals 去判断是否是同一个 key，是的话就替换，不是的话就链表接下去，如果不重写 hashCode 的话，默认的 object 的hashCode 是 native 方法，根据对象的地址生成的，这样其实对象的值相同的话，因为地址不同，HashMap 也会出现异常，所以需要重写，同时也需要重写 equals 方法，才能确认是同一个 key，而不是落在同一个槽的不同 key.

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    diff --git a/leancloud.memo b/leancloud.memo index 4997a87b71..5a7add056b 100644 --- a/leancloud.memo +++ b/leancloud.memo @@ -88,4 +88,5 @@ {"title":"Leetcode 160 相交链表(intersection-of-two-linked-lists) 题解分析","url":"/2021/01/10/Leetcode-160-相交链表-intersection-of-two-linked-lists-题解分析/"}, {"title":"聊聊那些加塞狗","url":"/2021/01/17/聊聊那些加塞狗/"}, {"title":"Leetcode 124 二叉树中的最大路径和(Binary Tree Maximum Path Sum) 题解分析","url":"/2021/01/24/Leetcode-124-二叉树中的最大路径和-Binary-Tree-Maximum-Path-Sum-题解分析/"}, +{"title":"聊聊 redis 缓存的应用问题","url":"/2021/01/31/聊聊-redis-缓存的应用问题/"}, ] \ No newline at end of file diff --git a/leancloud_counter_security_urls.json b/leancloud_counter_security_urls.json index 76f10e91b2..617ab7fd0b 100644 --- a/leancloud_counter_security_urls.json +++ b/leancloud_counter_security_urls.json @@ -1 +1 @@ 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+[{"title":"村上春树《1Q84》读后感","url":"/2019/12/18/1Q84读后感/"},{"title":"2020年中总结","url":"/2020/07/11/2020年中总结/"},{"title":"34_Search_for_a_Range","url":"/2016/08/14/34-Search-for-a-Range/"},{"title":"2019年终总结","url":"/2020/02/01/2019年终总结/"},{"title":"AbstractQueuedSynchronizer","url":"/2019/09/23/AbstractQueuedSynchronizer/"},{"title":"add-two-number","url":"/2015/04/14/Add-Two-Number/"},{"title":"Apollo 的 value 注解是怎么自动更新的","url":"/2020/11/01/Apollo-的-value-注解是怎么自动更新的/"},{"title":"Clone Graph Part I","url":"/2014/12/30/Clone-Graph-Part-I/"},{"title":"Comparator使用小记","url":"/2020/04/05/Comparator使用小记/"},{"title":"G1收集器概述","url":"/2020/02/09/G1收集器概述/"},{"title":"Leetcode 104 二叉树的最大深度(Maximum Depth of Binary Tree) 题解分析","url":"/2020/10/25/Leetcode-104-二叉树的最大深度-Maximum-Depth-of-Binary-Tree-题解分析/"},{"title":"Leetcode 124 二叉树中的最大路径和(Binary Tree Maximum Path Sum) 题解分析","url":"/2021/01/24/Leetcode-124-二叉树中的最大路径和-Binary-Tree-Maximum-Path-Sum-题解分析/"},{"title":"Leetcode 105 从前序与中序遍历序列构造二叉树(Construct 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MVCC 续篇","url":"/2020/05/02/聊聊-mysql-的-MVCC-续篇/"},{"title":"聊聊 mysql 的 MVCC 续续篇之锁分析","url":"/2020/05/10/聊聊-mysql-的-MVCC-续续篇之加锁分析/"},{"title":"聊聊Java中的单例模式","url":"/2019/12/21/聊聊Java中的单例模式/"},{"title":"聊聊 Java 的 equals 和 hashCode 方法","url":"/2021/01/03/聊聊-Java-的-equals-和-hashCode-方法/"},{"title":"聊聊一次 brew update 引发的血案","url":"/2020/06/13/聊聊一次-brew-update-引发的血案/"},{"title":"聊聊 redis 缓存的应用问题","url":"/2021/01/31/聊聊-redis-缓存的应用问题/"},{"title":"聊聊我刚学会的应用诊断方法","url":"/2020/05/22/聊聊我刚学会的应用诊断方法/"},{"title":"聊聊 mysql 索引的一些细节","url":"/2020/12/27/聊聊-mysql-索引的一些细节/"},{"title":"这周末我又在老丈人家打了天小工","url":"/2020/08/30/这周末我又在老丈人家打了天小工/"},{"title":"聊聊 mysql 的 MVCC","url":"/2020/04/26/聊聊-mysql-的-MVCC/"},{"title":"聊聊那些加塞狗","url":"/2021/01/17/聊聊那些加塞狗/"},{"title":"Filter, Interceptor, Aop, 啥, 啥, 啥? 这些都是啥?","url":"/2020/08/22/Filter-Intercepter-Aop-啥-啥-啥-这些都是啥/"},{"title":"redis数据结构介绍-第一部分 SDS，链表，字典","url":"/2019/12/26/redis数据结构介绍/"},{"title":"redis数据结构介绍六 快表","url":"/2020/01/22/redis数据结构介绍六/"},{"title":"介绍一下 RocketMQ","url":"/2020/06/21/介绍一下-RocketMQ/"},{"title":"聊聊 Dubbo 的容错机制","url":"/2020/11/22/聊聊-Dubbo-的容错机制/"},{"title":"聊聊我理解的分布式事务","url":"/2020/05/17/聊聊我理解的分布式事务/"},{"title":"JVM源码分析之G1垃圾收集器分析一","url":"/2019/12/07/JVM-G1-Part-1/"},{"title":"redis系列介绍七-过期策略","url":"/2020/04/12/redis系列介绍七/"},{"title":"redis系列介绍八-淘汰策略","url":"/2020/04/18/redis系列介绍八/"},{"title":"聊一下 RocketMQ 的 NameServer 源码","url":"/2020/07/05/聊一下-RocketMQ-的-NameServer-源码/"},{"title":"聊聊 RocketMQ 的 Broker 源码","url":"/2020/07/19/聊聊-RocketMQ-的-Broker-源码/"},{"title":"聊聊 Java 自带的那些*逆天*工具","url":"/2020/08/02/聊聊-Java-自带的那些逆天工具/"},{"title":"聊一下 RocketMQ 的 DefaultMQPushConsumer 源码","url":"/2020/06/26/聊一下-RocketMQ-的-Consumer/"}] \ No newline at end of file diff --git a/lib/pace/README.html b/lib/pace/README.html index 1c09ea3206..99893da229 100644 --- a/lib/pace/README.html +++ b/lib/pace/README.html @@ -351,20 +351,20 @@
    - 87 + 88 posts
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    @@ -389,7 +389,7 @@
    - +
    diff --git a/page/10/index.html b/page/10/index.html index 7d225fcf06..b3c4a6bbfb 100644 --- a/page/10/index.html +++ b/page/10/index.html @@ -203,6 +203,112 @@ +
    + + + + + +
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    +
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    最近做 docker 系列，会经常进到 docker 内部，如上一篇介绍的，这些镜像一般都有用 ubuntu 或者alpine 这样的 Linux 系统作为底包，如果构建镜像的时候没有替换源的话，因为你懂的原因，在内部想编辑下东西要安装 vim 就会很慢很慢，thousand years later~
    而且如果在容器内部想改源配置的话也要编辑器，就陷入了一个鸡生蛋，跟蛋生鸡的问题中，对于 linux 大神来说应该有一万种方法解决这个问题，对于我这个渣渣来说可能只想到了这个土方法，先 cp backup 一下 sources.list, 再 echo “xxx” > sources.list, 这里就碰到了一个问题，这个 sources.list 一般不止一行，直接 echo 的话就解析不了了，不过 echo 可以支持”\n”转义，就是加-e
    看一下解释和示例

    还有一点也是在这个时候要安装 vim 之类的，得知道是什么镜像底包，如果是用 uname 指令，其实看到的是宿主机的系统，得用cat /etc/issue

    这里稍稍记一下

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    众所周知，我是个前端彩笔，但是也想做点自己可以用的工具页面，所以就让朋友推荐了蚂蚁出品的 ant design，说基本可以直接 ctrl-c ctrl-v，实测对我这种来说还是有点难的，不过也能写点，但是现在碰到的问题是怎么部署到自己的服务器上去
    用 ant design 写的是个单页应用，实际来说就是一个 html 加 css 跟 js，最初的时候是直接 build 完就 scp 上去，也考虑过 rsync 之类的，但是都感觉不够自动化，正好自己还没这方面的经验就想折腾下，因为我自己搭的仓库应用是 gogs，搜了一下主要是跟 drones 配合做 ci/cd，研究了一下发现其实这个事情没必要这么搞(PS：drone 也不好用)，整个 hook 就可以了, 但是实际上呢，这东西也不是那么简单
    首先是需要在服务器上装 webhook，这个我一开始用 snap 安装，但是出现问题，run 的时候会出现后面参数带的 hooks.json 文件找不到，然后索性就直接 github 上下最新版，放 /usr/local/bin 了，webhook 的原理呢其实也比较简单，就是起一个 http 服务，通过 post 请求调用，解析下参数，如果跟配置的参数一致，就调用对应的命令或者脚本。

    -

    配置 hooks.json

    webhook 的配置，需要的两个文件，一个是 hooks.json，这个是 webhook 服务的配置文件，像这样

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    [
      {
        "id": "redeploy-app",
        "execute-command": "/opt/scripts/redeploy.sh",
        "command-working-directory": "/opt/scripts",
        "pass-arguments-to-command":
        [
          {
            "source": "payload",
            "name": "head_commit.message"
          },
          {
            "source": "payload",
            "name": "pusher.name"
          },
          {
            "source": "payload",
            "name": "head_commit.id"
          }
        ],
        "trigger-rule":
        {
          "and":
          [
            {
              "match":
              {
                "type": "payload-hash-sha1",
                "secret": "your-github-secret",
                "parameter":
                {
                  "source": "header",
                  "name": "X-Hub-Signature"
                }
              }
            },
            {
              "match":
              {
                "type": "value",
                "value": "refs/heads/master",
                "parameter":
                {
                  "source": "payload",
                  "name": "ref"
                }
              }
            }
          ]
        }
      }
    ]
    - -

    这是个跟 github搭配的示例，首先 id 表示的是这个对应 hook 的识别 id，也可以看到这个 hooks.json 的结构是这样的一个数组，然后就是要执行的命令和命令执行的参数，值得注意的是这个trigger-rule,就是请求进来了回去匹配里面的，比如前一个是一个加密的，放在请求头里，第二个 match 表示请求里的 ref 是个 master 分支，就可以区分分支进行不同操作，但是前面的加密配合 gogs 使用的时候有个问题(PS: webhook 的文档是真的烂)，gogs 设置 webhook 的加密是用的

    -
    -

    密钥文本将被用于计算推送内容的 SHA256 HMAC 哈希值，并设置为 X-Gogs-Signature 请求头的值。

    -
    -

    这种加密方式，所以 webhook 的这个示例的加密方式不行，但这货的文档里居然没有说明支持哪些加密，神TM，后来还是翻 issue 翻到了, 需要使用这个payload-hash-sha256

    -

    执行脚本 redeploy.sh

    脚本类似于这样

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    #!/bin/bash -e

    function cleanup {
          echo "Error occoured"
    }
    trap cleanup ERR

    commit_message=$1 # head_commit.message
    pusher_name=$2 # pusher.name
    commit_id=$3 # head_commit.id


    cd ~/do-react-example-app/
    git pull origin master
    yarn && yarn build
    - -

    就是简单的拉代码，然后构建下，真实使用时可能不是这样，因为页面会部署在 nginx 的作用目录，还需要 rsync 过去，这部分可能还涉及到两个问题第一个是使用 rsync 还是其他的 cp，不过这个无所谓；第二个是目录权限的问题，以我的系统ubuntu 为例，默认用户是 ubuntu，nginx 部署的目录是 www，所以需要切换用户等操作，一开始是想用在shell 文件中直接写了密码，但是不知道咋传，查了下是类似于这样 echo "passwd" | sudo -S cmd，通过管道命令往后传，然后就是这个-S, 参数的解释是-S, --stdin read password from standard input,但是这样么也不是太安全的赶脚，又看了下还有两种方法，

    -
      -

    • 就是给root 设置一个不需要密码的命令类似于这样，

      -
      1
      2
      myusername ALL = (ALL) ALL
      myusername ALL = (root) NOPASSWD: /path/to/my/program
      -
      • -

    • 另一种就是把默认用户跟 root 设置成同一个 group 的

      -
      • -
    -

    使用

    真正实操的时候其实还有不少问题，首先运行 webhook 就碰到了我前面说的，使用 snap 运行的时候会找不到前面的 hooks.json配置文件，执行snap run webhook -hooks /opt/hooks/hooks.json -verbose就碰到下面的couldn't load hooks from file! open /opt/hooks/hooks.json: no such file or directory，后来直接下了个官方最新的 release，就直接执行 webhook -hooks /opt/hooks/hooks.json -verbose 就可以了，然后是前面的示例配置文件里的几个参数，比如head_commit.message 其实 gogs 推过来的根本没这玩意，而且都是数组，不知道咋取，烂文档，不过总比搭个 drone 好一点就忍了。补充一点就是在 debug 的时候需要看下问题出在哪，看看脚本有没有执行，所以需要在前面的 json 里加这个参数"include-command-output-in-response": true, 就能输出来脚本执行结果

    - - -
    - - - - - - -
    -
    -
    -
    - - - - @@ -894,7 +883,7 @@
    - +
    diff --git a/page/11/index.html b/page/11/index.html index 8658358291..fb679ed24a 100644 --- a/page/11/index.html +++ b/page/11/index.html @@ -203,6 +203,123 @@ +
    + + + + + +
    +

    + + +

    + +
    + + + + + Posted on + + + + + + + + Edited on + + + + + + + In + + + + + + + + + + + Views: + + + + + + + + + Disqus: + + + + + + + + +
    +
    + + + + +
    + + +

    众所周知，我是个前端彩笔，但是也想做点自己可以用的工具页面，所以就让朋友推荐了蚂蚁出品的 ant design，说基本可以直接 ctrl-c ctrl-v，实测对我这种来说还是有点难的，不过也能写点，但是现在碰到的问题是怎么部署到自己的服务器上去
    用 ant design 写的是个单页应用，实际来说就是一个 html 加 css 跟 js，最初的时候是直接 build 完就 scp 上去，也考虑过 rsync 之类的，但是都感觉不够自动化，正好自己还没这方面的经验就想折腾下，因为我自己搭的仓库应用是 gogs，搜了一下主要是跟 drones 配合做 ci/cd，研究了一下发现其实这个事情没必要这么搞(PS：drone 也不好用)，整个 hook 就可以了, 但是实际上呢，这东西也不是那么简单
    首先是需要在服务器上装 webhook，这个我一开始用 snap 安装，但是出现问题，run 的时候会出现后面参数带的 hooks.json 文件找不到，然后索性就直接 github 上下最新版，放 /usr/local/bin 了，webhook 的原理呢其实也比较简单，就是起一个 http 服务，通过 post 请求调用，解析下参数，如果跟配置的参数一致，就调用对应的命令或者脚本。

    +

    配置 hooks.json

    webhook 的配置，需要的两个文件，一个是 hooks.json，这个是 webhook 服务的配置文件，像这样

    +
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    [
      {
        "id": "redeploy-app",
        "execute-command": "/opt/scripts/redeploy.sh",
        "command-working-directory": "/opt/scripts",
        "pass-arguments-to-command":
        [
          {
            "source": "payload",
            "name": "head_commit.message"
          },
          {
            "source": "payload",
            "name": "pusher.name"
          },
          {
            "source": "payload",
            "name": "head_commit.id"
          }
        ],
        "trigger-rule":
        {
          "and":
          [
            {
              "match":
              {
                "type": "payload-hash-sha1",
                "secret": "your-github-secret",
                "parameter":
                {
                  "source": "header",
                  "name": "X-Hub-Signature"
                }
              }
            },
            {
              "match":
              {
                "type": "value",
                "value": "refs/heads/master",
                "parameter":
                {
                  "source": "payload",
                  "name": "ref"
                }
              }
            }
          ]
        }
      }
    ]
    + +

    这是个跟 github搭配的示例，首先 id 表示的是这个对应 hook 的识别 id，也可以看到这个 hooks.json 的结构是这样的一个数组，然后就是要执行的命令和命令执行的参数，值得注意的是这个trigger-rule,就是请求进来了回去匹配里面的，比如前一个是一个加密的，放在请求头里，第二个 match 表示请求里的 ref 是个 master 分支，就可以区分分支进行不同操作，但是前面的加密配合 gogs 使用的时候有个问题(PS: webhook 的文档是真的烂)，gogs 设置 webhook 的加密是用的

    +
    +

    密钥文本将被用于计算推送内容的 SHA256 HMAC 哈希值，并设置为 X-Gogs-Signature 请求头的值。

    +
    +

    这种加密方式，所以 webhook 的这个示例的加密方式不行，但这货的文档里居然没有说明支持哪些加密，神TM，后来还是翻 issue 翻到了, 需要使用这个payload-hash-sha256

    +

    执行脚本 redeploy.sh

    脚本类似于这样

    +
    1
    2
    3
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    8
    9
    10
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    #!/bin/bash -e

    function cleanup {
          echo "Error occoured"
    }
    trap cleanup ERR

    commit_message=$1 # head_commit.message
    pusher_name=$2 # pusher.name
    commit_id=$3 # head_commit.id


    cd ~/do-react-example-app/
    git pull origin master
    yarn && yarn build
    + +

    就是简单的拉代码，然后构建下，真实使用时可能不是这样，因为页面会部署在 nginx 的作用目录，还需要 rsync 过去，这部分可能还涉及到两个问题第一个是使用 rsync 还是其他的 cp，不过这个无所谓；第二个是目录权限的问题，以我的系统ubuntu 为例，默认用户是 ubuntu，nginx 部署的目录是 www，所以需要切换用户等操作，一开始是想用在shell 文件中直接写了密码，但是不知道咋传，查了下是类似于这样 echo "passwd" | sudo -S cmd，通过管道命令往后传，然后就是这个-S, 参数的解释是-S, --stdin read password from standard input,但是这样么也不是太安全的赶脚，又看了下还有两种方法，

    +
      +

    • 就是给root 设置一个不需要密码的命令类似于这样，

      +
      1
      2
      myusername ALL = (ALL) ALL
      myusername ALL = (root) NOPASSWD: /path/to/my/program
      +
      • +

    • 另一种就是把默认用户跟 root 设置成同一个 group 的

      +
      • +
    +

    使用

    真正实操的时候其实还有不少问题，首先运行 webhook 就碰到了我前面说的，使用 snap 运行的时候会找不到前面的 hooks.json配置文件，执行snap run webhook -hooks /opt/hooks/hooks.json -verbose就碰到下面的couldn't load hooks from file! open /opt/hooks/hooks.json: no such file or directory，后来直接下了个官方最新的 release，就直接执行 webhook -hooks /opt/hooks/hooks.json -verbose 就可以了，然后是前面的示例配置文件里的几个参数，比如head_commit.message 其实 gogs 推过来的根本没这玩意，而且都是数组，不知道咋取，烂文档，不过总比搭个 drone 好一点就忍了。补充一点就是在 debug 的时候需要看下问题出在哪，看看脚本有没有执行，所以需要在前面的 json 里加这个参数"include-command-output-in-response": true, 就能输出来脚本执行结果

    + + +
    + + + + + + +
    +
    +
    +
    + + + + + + +
    @@ -364,11 +481,11 @@ , - + , - + @@ -590,19 +707,19 @@ , - + , - + , - + , - + @@ -679,121 +796,6 @@ - - - -
    - - - - - -
    -

    - - -

    - -
    - - - - - Posted on - - - - - - - - In - - - - , - - - - , - - - - , - - - - , - - - - - - - - - - - Views: - - - - - - - - - Disqus: - - - - - - - - -
    -
    - - - - -
    - - -

    前面说了这么些数据结构，其实大家对于 redis 最初的印象应该就是个 key-value 的缓存，类似于 memcache，redis 其实也是个 key-value，key 还是一样的字符串，或者说就是用 redis 自己的动态字符串实现，但是 value 其实就是前面说的那些数据结构，差不多快说完了，还有个 quicklist 后面还有一篇，这里先介绍下 redis 对于这些不同类型的 value 是怎么实现的，首先看下 redisObject 的源码头文件

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    /* The actual Redis Object */
    #define OBJ_STRING 0    /* String object. */
    #define OBJ_LIST 1      /* List object. */
    #define OBJ_SET 2       /* Set object. */
    #define OBJ_ZSET 3      /* Sorted set object. */
    #define OBJ_HASH 4      /* Hash object. */
    /*
     * Objects encoding. Some kind of objects like Strings and Hashes can be
     * internally represented in multiple ways. The 'encoding' field of the object
     * is set to one of this fields for this object. */
    #define OBJ_ENCODING_RAW 0     /* Raw representation */
    #define OBJ_ENCODING_INT 1     /* Encoded as integer */
    #define OBJ_ENCODING_HT 2      /* Encoded as hash table */
    #define OBJ_ENCODING_ZIPMAP 3  /* Encoded as zipmap */
    #define OBJ_ENCODING_LINKEDLIST 4 /* No longer used: old list encoding. */
    #define OBJ_ENCODING_ZIPLIST 5 /* Encoded as ziplist */
    #define OBJ_ENCODING_INTSET 6  /* Encoded as intset */
    #define OBJ_ENCODING_SKIPLIST 7  /* Encoded as skiplist */
    #define OBJ_ENCODING_EMBSTR 8  /* Embedded sds string encoding */
    #define OBJ_ENCODING_QUICKLIST 9 /* Encoded as linked list of ziplists */
    #define OBJ_ENCODING_STREAM 10 /* Encoded as a radix tree of listpacks */

    #define LRU_BITS 24
    #define LRU_CLOCK_MAX ((1<<LRU_BITS)-1) /* Max value of obj->lru */
    #define LRU_CLOCK_RESOLUTION 1000 /* LRU clock resolution in ms */

    #define OBJ_SHARED_REFCOUNT INT_MAX
    typedef struct redisObject {
        unsigned type:4;
        unsigned encoding:4;
        unsigned lru:LRU_BITS; /* LRU time (relative to global lru_clock) or
                                * LFU data (least significant 8 bits frequency
                                * and most significant 16 bits access time). */
        int refcount;
        void *ptr;
    } robj;
    -

    主体结构就是这个 redisObject，

    -
      -
    • type： 字段表示对象的类型，它对应的就是 redis 的对外暴露的，或者说用户可以使用的五种类型，OBJ_STRING, OBJ_LIST, OBJ_SET, OBJ_ZSET, OBJ_HASH
      • -
    • encoding： 字段表示这个对象在 redis 内部的编码方式，由OBJ_ENCODING_开头的 11 种
      • -
    • lru: 做LRU替换算法用，占24个bit
      • -
    • refcount: 引用计数。它允许robj对象在某些情况下被共享。
      • -
    • ptr: 指向底层实现数据结构的指针
      当 type 是 OBJ_STRING 时，表示类型是个 string，它的编码方式 encoding 可能有 OBJ_ENCODING_RAW，OBJ_ENCODING_INT，OBJ_ENCODING_EMBSTR 三种
      当 type 是 OBJ_LIST 时，表示类型是 list，它的编码方式 encoding 是 OBJ_ENCODING_QUICKLIST，对于早一些的版本，2.2这种可能还会使用 OBJ_ENCODING_ZIPLIST，OBJ_ENCODING_LINKEDLIST
      当 type 是 OBJ_SET 时，是个集合，但是得看具体元素的类型，有可能使用整数集合，OBJ_ENCODING_INTSET, 如果元素不全是整型或者数量超过一定限制，那么编码就是 OBJ_ENCODING_HT hash table 了
      当 type 是 OBJ_ZSET 时，是个有序集合，它底层有可能使用的是 OBJ_ENCODING_ZIPLIST 或者 OBJ_ENCODING_SKIPLIST
      当 type 是 OBJ_HASH 时，一开始也是 OBJ_ENCODING_ZIPLIST，然后当数据量大于 hash_max_ziplist_entries 时会转成 OBJ_ENCODING_HT
      • -
    - - -
    - - - - - - -
    -
    -
    -
    - - - - @@ -903,7 +905,7 @@
    - +
    diff --git a/page/12/index.html b/page/12/index.html index a602d42dcb..ba2a47c703 100644 --- a/page/12/index.html +++ b/page/12/index.html @@ -204,7 +204,7 @@
    - +