Docker api,附加容器返回额外的字符

docker api, attaching container returns extra characters

本文关键字:返回 字符 api Docker      更新时间:2023-09-26

我正在浏览器中使用javascript中的docker api,我启动一个执行"composer install"命令的容器,然后我附加到它以获得输出。一切正常,但我在每行的开头得到了一些额外的字符

    -Installing assets using the hard copy option
    PInstalling assets for Symfony'Bundle'FrameworkBundle into web/bundles/framework
    BInstalling assets for Propel'PropelBundle into web/bundles/propel

p和B在这个两行示例中安装word之前,但实际上是随机的字母或数字。

我需要解析或处理附加容器的输出显示之前?

注意:不仅从浏览器,也从终端curl命令,也得到相同的随机字符开始几乎行

curl 'http://localhost/dockerapi/containers/54053a10dc05b45c400b16733d2edd1cbfb6b6d877badf5cc26d3da7d2165375/attach?logs=1&stream=1&stdout=1' 
-X POST 
-H 'Origin: http://localhost' 
-H 'Accept-Encoding: gzip,deflate,sdch' 
-H 'Accept-Language: en-US,en;q=0.8,es;q=0.6' 
-H 'User-Agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10_9_2) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/36.0.1985.125 Safari/537.36'
-H 'Accept: application/json, text/plain, */*' 
-H 'Referer: http://localhost/' 
-H 'Connection: keep-alive'
-H 'Content-Length: 0' 
--compressed

这里记录了这一点http://docs.docker.com/reference/api/docker_remote_api_v1.13/attach-to-a-container

我只是忽略了,因为我认为文本格式是响应的其余部分,但它实际上是文档。@soullou用户已经在https://github.com/docker/docker/issues/7375#issuecomment-51462963

中澄清了
It is encoded on the first 8 bytes like this:
header := [8]byte{STREAM_TYPE, 0, 0, 0, SIZE1, SIZE2, SIZE3, SIZE4}
`STREAM_TYPE` can be:
-   0: stdin (will be written on stdout)
-   1: stdout
-   2: stderr
`SIZE1, SIZE2, SIZE3, SIZE4` are the 4 bytes of
the uint32 size encoded as big endian.