User: svn comman 使用
Assistant: Subversion（SVN）是一种版本控制系统。以下是一些常用的 SVN 命令及其简要说明：

1. **检出（Checkout）**
   ```
   svn checkout [REPOSITORY_URL] [LOCAL_DIRECTORY]
   ```
   从 SVN 仓库检出代码到本地目录。

2. **更新（Update）**
   ```
   svn update [LOCAL_DIRECTORY]
   ```
   更新本地工作副本，以获取最新的代码和更改。

3. **提交（Commit）**
   ```
   svn commit -m "提交信息" [LOCAL_DIRECTORY]
   ```
   将更改提交到 SVN 仓库。

4. **添加（Add）**
   ```
   svn add [FILE_OR_DIRECTORY]
   ```
   将新文件或目录添加到版本控制中。

5. **删除（Delete）**
   ```
   svn delete [FILE_OR_DIRECTORY]
   ```
   从版本控制中删除文件或目录。

6. **显示状态（Status）**
   ```
   svn status [LOCAL_DIRECTORY]
   ```
   显示工作副本的状态，包括未跟踪的文件、已修改的文件等。

7. **查看日志（Log）**
   ```
   svn log [REPOSITORY_URL]
   ```
   查看仓库的提交历史记录。

8. **查看差异（Diff）**
   ```
   svn diff [LOCAL_DIRECTORY]
   ```
   显示工作副本与 SVN 仓库之间的差异。

9. **回退（Revert）**
   ```
   svn revert [FILE_OR_DIRECTORY]
   ```
   撤销对某个文件或目录的更改。

10. **导出（Export）**
    ```
    svn export [REPOSITORY_URL] [DESTINATION_DIRECTORY]
    ```
    将仓库中的文件导出到指定目录，不包含 SVN 元数据。

11. **切换（Switch）**
    ```
    svn switch [NEW_URL]
    ```
    将当前工作副本切换到不同的分支或标签。

这些是 SVN 的一些基本命令。使用时，可以根据实际需求添加更多选项，比如 `--force`、`--quiet` 等。希望这些信息能帮助你更好地使用 SVN！
User: svn: E000002: 无法从模版
Assistant: `svn: E000002: 无法从模板` 这个错误通常表示 Subversion 在执行某个操作时无法找到或读取提供的模板文件。模板文件通常用于创建新目录或文件的初始结构。如果你遇到这个错误，可能的原因和解决方法包括：

1. **检查路径和 URL**：
   确保你使用的 URL 或路径是正确的。路径中可能包含错误，从而导致无法找到模板文件。

2. **模板文件存在性**：
   确保你指定的模板文件确实存在于仓库中。如果是从本地进行操作，检查指定路径是否存在并且没有拼写错误。

3. **权限问题**：
   确保你有足够的权限读取该模板文件。某些文件或目录可能对特定用户设置了访问限制。

4. **尝试其他目录**：
   有时模板可能是基于某个特定目录，尝试切换到其他目录或分支，看看是否能找回正常状态。

5. **检查 SVN 版本和配置**：
   确保你正在使用的 SVN 客户端和服务器是兼容的，版本之间的差异可能导致错误。

6. **清理工作副本**：
   如果你的工作副本处于某种错误状态，可以尝试执行 `svn cleanup` 命令，这样可以清理掉一些锁定或未完成的事务。

7. **查阅 SVN 文档或支持**：
   如果上述方法无法解决问题，可以查阅 Subversion 的官方文档、社区支持或寻求开发团队的帮助。

如果可以提供更多的上下文或具体的命令，我可以帮助你进一步诊
User: Unable to reach a settlement of HostKeyAlgorithms:
Assistant: The error message "Unable to reach a settlement of HostKeyAlgorithms" typically occurs when there is a mismatch between the SSH client and server in their supported algorithms for host key verification. This often happens in contexts where secure shell (SSH) connections are attempted, such as when accessing an SVN repository over SSH.

To resolve this issue, you can try the following approaches:

1. **Update SSH Client Configuration**:
   If you have control over your SSH configuration, you can specify the accepted host key algorithms in your SSH client's config file (`~/.ssh/config` or `/etc/ssh/ssh_config` for a system-wide configuration). Add the following lines:

   ```plaintext
   Host *
       HostKeyAlgorithms +ssh-rsa
       PubkeyAcceptedKeyTypes +ssh-rsa
   ```

   Replace `ssh-rsa` with the appropriate algorithm(s) that are supported by your server, if necessary.

2. **Update the SSH Server Configuration**:
   If you have control over the SSH server, check the server's SSH configuration file (usually `/etc/ssh/sshd_config`) to ensure that it is configured to accept the necessary host key algorithms. You might want to add or uncomment lines such as:

   ```plaintext
   HostKeyAlgorithms ssh-rsa
   ```

   After making any changes, be sure to restart the SSH service on the server.

3. **SSH Client Upgrade**:
   Ensure that your SSH client is updated to the latest version, as certain legacy algorithms (like older versions of `ssh-rsa`) may be disabled by default in newer versions of SSH for security reasons.

4. **Explicitly Specify the Key Type**:
   When executing your SVN command, if relevant, you may explicitly specify the SSH command to use specific keys or algorithms. This can sometimes be done with command-line options, for example:

   ```bash
   svn --config-option config:helpers:svnserve=path/to/your/ssh-key
   ```

5. **Use Different Protocol**: 
   If it’s feasible, consider using a different transport method for SVN, such as HTTPS instead of SSH, which would not go through the SSH key negotiation.

6. **Check SSH Connection**:
   Test an SSH connection directly to make sure it's working properly:

   ```bash
   ssh -v user@hostname
   ```

   The `-v` flag will provide verbose output, showing more detail about what might be going wrong.

By implementing one or more of these suggestions, you should be able to resolve the "Unable to reach a settlement of HostKeyAlgorithms" error and successfully interact with your SVN repository. If the problem persists, feel free to provide more details about your setup and any additional error messages.
User: lua cjson decode bad argument #1 to '?'
Assistant: The error message "bad argument #1 to '?'" in Lua, particularly when using the `cjson` library, typically indicates that the Lua script is passing an argument to a function that is not of the expected type. In this context, it often refers to issues with the input data being passed to the `cjson.decode()` function. Here are some common causes and solutions:

### Common Causes

1. **Nil Input**:
   If you pass `nil` to the `cjson.decode()` function, it will throw this error. Ensure that the string you're trying to decode is not `nil`.

2. **Invalid JSON Format**:
   If the input string is not a valid JSON format, `cjson.decode()` will not be able to process it. Ensure that the JSON string is properly formatted.

3. **Data Type Issues**:
   Make sure that you're passing a string to the `cjson.decode()` function. If you're passing any other data type (like a table or number), it will result in this error.

### Solutions

1. **Check the Input**:
   Before calling the decode function, print or log the input value to ensure that it is indeed a non-nil string:

   ```lua
   local jsonString = '{"name": "John", "age": 30}' -- Example JSON string
   if jsonString ~= nil then
       local decoded = cjson.decode(jsonString)
   else
       print("Input is nil")
   end
   ```

2. **Validate JSON Format**:
   Use a JSON linting tool or online validator to ensure that your JSON string is correctly formatted. Correct any syntax errors before passing it to `cjson.decode()`.

3. **Example of Proper Usage**:
   Here's a correct usage example for decoding JSON with Lua and `cjson`:

   ```lua
   local cjson = require "cjson"
   
   local jsonString = '{"name": "John", "age": 30}' -- Valid JSON string

   -- Print the input JSON string for debugging
   print("JSON Input: ", jsonString)

   -- Safely decode the JSON string
   local success, result = pcall(cjson.decode, jsonString)

   if success then
       print("Decoded JSON: ", result.name, result.age)
   else
       print("Error decoding JSON: ", result)
   end
   ```

4. **Error Handling with `pcall`**:
   Use `pcall` (protected call) to gracefully handle any errors that might occur during the decoding process. This can provide more context about what went wrong:

   ```lua
   local success, result = pcall(cjson.decode, jsonString)

   if not success then
       print("Error: ", result)
   else
       -- Process the successfully decoded data
   end
   ```

By following these steps, you should be able to troubleshoot and resolve the "bad argument #1" error when using `cjson.decode()` in Lua. If you continue to face issues, please provide the specific JSON string or code snippet causing the problem for further assistance
User: apisix plugin get http response body
Assistant:  Apache APISIX, if you want to create a plugin that retrieves or manipulates the HTTP response body, you can use the response filter phase of the plugin. Here’s a brief overview of how to achieve this using Lua.

### Retrieving the HTTP Response Body in an APISIX Plugin

1. **Create a Custom Plugin**:
   You will need to create a custom plugin if you don't already have one. The directory for plugins is typically located at `/path/to/apisix/plugins/`.

2. **Plugin Structure**:
   Here's a basic structure of a plugin with a `response_filter` method to capture and log the HTTP response body:

   ```lua
   -- File: /path/to/apisix/plugins/my_custom_plugin.lua

   local core = require("apisix.core")

   local my_custom_plugin = {
       version = 0.1,
       priority = 1000,
       name = "my_custom_plugin",
   }

   function my_custom_plugin.check_schema(conf)
       return true  -- Add schema validation if needed
   end

   function my_custom_plugin.body_filter(conf, ctx)
       -- This function is called before the response body is sent to the client.

       local res = ctx.response
       local body = res.body or ""

       -- Log or manipulate the response body
       core.log.info("Response body: ", body)

       -- You can manipulate the body here if needed
       -- For example, adding a prefix
       -- local new_body = "Prefix: " .. body
       -- res.body = new_body  -- Set the modified body
   end

   return my_custom_plugin
   ```

3. **Configuring the Plugin**:
   After creating your plugin, you need to configure it in your APISIX route or service. This can be done through the Admin API:

   ```shell
   curl http://127.0.0.1:9180/apisix/admin/routes/{route_id} \
       -H "Content-Type: application/json" \
       -d '{
           "plugins": {
               "my_custom_plugin": {}
           },
           "upstream": {
               "type": "roundrobin",
               "nodes": {
                   "your-service:port": 1
               }
           }
       }'
   ```

4. **Test Your Plugin**:
   After configuring the plugin, make requests to the route that uses your custom plugin. You should see the log statements in the APISIX log files reflecting the response body as processed by your plugin.

### Important Notes:
- The `body_filter` function is the appropriate phase for manipulating the response body as it comes when the response has already been generated.
- APISIX plugins can modify the response before it is sent back to the client, so take care to ensure that any transformations are valid.
- Make sure to test your plugin thoroughly to handle various response scenarios (e.g., JSON, XML).

By following the steps above, you should be able to create an APISIX plugin that retrieves and possibly modifies the HTTP response body effectively. If you have specific scenarios or requirements, let me know, and I can provide more detailed help!
User: centos 增大一下swap 空间
Assistant: