extension_api 0.0.8

自定义wasm plugin 扩展api
Documentation 
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package workoss:extension;

world extension {
  import extension-http;
  import platform;
  import process;

  use common.{env-vars,mime-type};
  use process.{command};

  /// 获取配置 
  import get-settings: func(key: option<string>) -> result<string, string>;  
  /// 下载文件  
  import download-file: func(url: string, file-path: string, file-type: download-file-type) -> result<_,string>;
  /// 让下载后的文件变成可执行文件  
  import make-file-executable: func(file-path: string) -> result<_, string>;

  ///下载文件后缀 解压  
  enum download-file-type {
    /// .gz
    gzip,
    /// .tar.gz
    tar-gzip,
    /// .zip
    zip,
    // uncompressed
    uncompressed,
  }

 
  /// 输入  
  record plugin-input {
     /// 输入body 
     body: option<list<u8>>,
     /// 输入body类型
     mime-type: mime-type,
     /// env参数
     envs: option<env-vars>,
  }
  /// 输出  
  record plugin-output {
    ///输出 body
    body: option<list<u8>>,
    /// 输出body类型
    mime-type: mime-type,
  }

  /// 初始化插件
  export init-plugin: func();   
  /// 执行插件  
  export run-plugin: func(input: plugin-input) -> result<plugin-output,string>;  
}