Update image-layout.md: fix json format in practice #453

Sn0rt · 2016-11-07T09:05:56Z

In real world, if you do not format the output of cat, it will be so ugly.
And the original document may generate through imagination.

Example:

[guohao@localhost image-tools]$ cat etcd-oci/
blobs/      oci-layout  refs/       
[guohao@localhost image-tools]$ cat etcd-oci/refs/latest 
{"mediaType":"application/vnd.oci.image.manifest.v1+json","digest":"sha256:99ef9268131c383a83c2845413684a66d391e98560c4a0a9ae923c5f04f79e69","size":1042}[guohao@localhost image-tools]$ cat etcd-oci/blobs/sha256/
79ac26bcdd8013a398c7b54506d25cd7c738ba061b362fd1ed56cde4d6152a26  99ef9268131c383a83c2845413684a66d391e98560c4a0a9ae923c5f04f79e69  eeee0535bf3cec7a24bff2c6e97481afa3d37e2cdeff277c57cb5cbdb2fa9e92
95e6aab6810eee8381957a8e83ddd76c5dde9d523e7cfda8f172c7b0e3e60c17  a3ed95caeb02ffe68cdd9fd84406680ae93d633cb16422d00e8a7c22955b46d4  
[guohao@localhost image-tools]$ cat etcd-oci/blobs/sha256/79ac26bcdd8013a398c7b54506d25cd7c738ba061b362fd1ed56cde4d6152a26 
{"architecture":"amd64","author":"Dawn Chen \u003cdawnchen@google.com\u003e","config":{"Hostname":"aded96b43f48","Domainname":"","User":"","AttachStdin":false,"AttachStdout":false,"AttachStderr":false,"PortSpecs":null,"ExposedPorts":{"2379/tcp":{},"2380/tcp":{},"4001/tcp":{},"7001/tcp":{}},"Tty":false,"OpenStdin":false,"StdinOnce":false,"Env":["PATH=/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/sbin:/bin"],"Cmd":["sh"],"Image":"3a9a9956eb76a35a3bccaf0b4de38d2ef8262b58cf0df6206fbd1c63f27bfcd3","Volumes":null,"VolumeDriver":"","WorkingDir":"","Entrypoint":null,"NetworkDisabled":false,"MacAddress":"","OnBuild":[],"Labels":{}},"container":"78991c8b805f5e57b54e05566640485309acdd6c3292ce23294b08a80e587014","container_config":{"Hostname":"aded96b43f48","Domainname":"","User":"","AttachStdin":false,"AttachStdout":false,"AttachStderr":false,"PortSpecs":null,"ExposedPorts":{"2379/tcp":{},"2380/tcp":{},"4001/tcp":{},"7001/tcp":{}},"Tty":false,"OpenStdin":false,"StdinOnce":false,"Env":["PATH=/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/sbin:/bin"],"Cmd":["/bin/sh","-c","#(nop) COPY multi:706b1bbcebb521830420b655a1ea7fe8cfabc2e90d8804a618926df98558efac in /usr/local/bin/"],"Image":"3a9a9956eb76a35a3bccaf0b4de38d2ef8262b58cf0df6206fbd1c63f27bfcd3","Volumes":null,"VolumeDriver":"","WorkingDir":"","Entrypoint":null,"NetworkDisabled":false,"MacAddress":"","OnBuild":[],"Labels":{}},"created":"2016-08-10T06:33:47.01604452Z","docker_version":"1.7.1","history":[{"created":"2016-01-15T18:06:40.707908287Z","created_by":"/bin/sh -c #(nop) ADD file:a62b361be92f978752150570261ddc6fc21b025e3a28418820a1f39b7db7498c in /"},{"created":"2016-01-15T18:06:41.282540103Z","created_by":"/bin/sh -c #(nop) CMD [\"sh\"]"},{"created":"2016-07-21T06:14:20.151595901Z","author":"Dawn Chen \u003cdawnchen@google.com\u003e","created_by":"/bin/sh -c #(nop) MAINTAINER Dawn Chen \u003cdawnchen@google.com\u003e"},{"created":"2016-07-21T06:14:20.629667506Z","author":"Dawn Chen \u003cdawnchen@google.com\u003e","created_by":"/bin/sh -c #(nop) EXPOSE 2379/tcp 2380/tcp 4001/tcp 7001/tcp"},{"created":"2016-08-10T06:33:47.01604452Z","author":"Dawn Chen \u003cdawnchen@google.com\u003e","created_by":"/bin/sh -c #(nop) COPY multi:706b1bbcebb521830420b655a1ea7fe8cfabc2e90d8804a618926df98558efac in /usr/local/bin/"}],"os":"linux","rootfs":{"type":"layers","diff_ids":["sha256:2c84284818d186d88a16ac7fa731d4b71ba69ecfe11b4ce00413366833cb2403","sha256:5f70bf18a086007016e948b04aed3b82103a36bea41755b6cddfaf10ace3c6ef","sha256:5f70bf18a086007016e948b04aed3b82103a36bea41755b6cddfaf10ace3c6ef","sha256:5f70bf18a086007016e948b04aed3b82103a36bea41755b6cddfaf10ace3c6ef","sha256:5e47621858b3629202b1db1e24abbe4046124c002bbe943bc7ff6502933146c4"]}}[guohao@localhost image-tools]$ uname -a
Linux localhost.localdomain 4.7.2-201.fc24.x86_64 #1 SMP Fri Aug 26 15:58:40 UTC 2016 x86_64 x86_64 x86_64 GNU/Linux

Formated:

[guohao@localhost image-tools]$ cat etcd-oci/blobs/sha256/79ac26bcdd8013a398c7b54506d25cd7c738ba061b362fd1ed56cde4d6152a26  | python -m json.tool
{
    "architecture": "amd64",
    "author": "Dawn Chen <dawnchen@google.com>",
    "config": {
        "AttachStderr": false,
        "AttachStdin": false,
        "AttachStdout": false,
        "Cmd": [
            "sh"
        ],
        "Domainname": "",
        "Entrypoint": null,
        "Env": [
            "PATH=/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/sbin:/bin"
        ],
        "ExposedPorts": {
            "2379/tcp": {},
            "2380/tcp": {},
            "4001/tcp": {},
            "7001/tcp": {}
        },
        "Hostname": "aded96b43f48",
        "Image": "3a9a9956eb76a35a3bccaf0b4de38d2ef8262b58cf0df6206fbd1c63f27bfcd3",
        "Labels": {},
        "MacAddress": "",
        "NetworkDisabled": false,
        "OnBuild": [],
        "OpenStdin": false,
        "PortSpecs": null,
        "StdinOnce": false,
        "Tty": false,
        "User": "",
        "VolumeDriver": "",
        "Volumes": null,
        "WorkingDir": ""
    },
    "container": "78991c8b805f5e57b54e05566640485309acdd6c3292ce23294b08a80e587014",
    "container_config": {
        "AttachStderr": false,
        "AttachStdin": false,
        "AttachStdout": false,
        "Cmd": [
            "/bin/sh",
            "-c",
            "#(nop) COPY multi:706b1bbcebb521830420b655a1ea7fe8cfabc2e90d8804a618926df98558efac in /usr/local/bin/"
        ],
        "Domainname": "",
        "Entrypoint": null,
        "Env": [
            "PATH=/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/sbin:/bin"
        ],
        "ExposedPorts": {
            "2379/tcp": {},
            "2380/tcp": {},
            "4001/tcp": {},
            "7001/tcp": {}
        },
        "Hostname": "aded96b43f48",
        "Image": "3a9a9956eb76a35a3bccaf0b4de38d2ef8262b58cf0df6206fbd1c63f27bfcd3",
        "Labels": {},
        "MacAddress": "",
        "NetworkDisabled": false,
        "OnBuild": [],
        "OpenStdin": false,
        "PortSpecs": null,
        "StdinOnce": false,
        "Tty": false,
        "User": "",
        "VolumeDriver": "",
        "Volumes": null,
        "WorkingDir": ""
    },
    "created": "2016-08-10T06:33:47.01604452Z",
    "docker_version": "1.7.1",
    "history": [
        {
            "created": "2016-01-15T18:06:40.707908287Z",
            "created_by": "/bin/sh -c #(nop) ADD file:a62b361be92f978752150570261ddc6fc21b025e3a28418820a1f39b7db7498c in /"
        },
        {
            "created": "2016-01-15T18:06:41.282540103Z",
            "created_by": "/bin/sh -c #(nop) CMD [\"sh\"]"
        },
        {
            "author": "Dawn Chen <dawnchen@google.com>",
            "created": "2016-07-21T06:14:20.151595901Z",
            "created_by": "/bin/sh -c #(nop) MAINTAINER Dawn Chen <dawnchen@google.com>"
        },
        {
            "author": "Dawn Chen <dawnchen@google.com>",
            "created": "2016-07-21T06:14:20.629667506Z",
            "created_by": "/bin/sh -c #(nop) EXPOSE 2379/tcp 2380/tcp 4001/tcp 7001/tcp"
        },
        {
            "author": "Dawn Chen <dawnchen@google.com>",
            "created": "2016-08-10T06:33:47.01604452Z",
            "created_by": "/bin/sh -c #(nop) COPY multi:706b1bbcebb521830420b655a1ea7fe8cfabc2e90d8804a618926df98558efac in /usr/local/bin/"
        }
    ],
    "os": "linux",
    "rootfs": {
        "diff_ids": [
            "sha256:2c84284818d186d88a16ac7fa731d4b71ba69ecfe11b4ce00413366833cb2403",
            "sha256:5f70bf18a086007016e948b04aed3b82103a36bea41755b6cddfaf10ace3c6ef",
            "sha256:5f70bf18a086007016e948b04aed3b82103a36bea41755b6cddfaf10ace3c6ef",
            "sha256:5f70bf18a086007016e948b04aed3b82103a36bea41755b6cddfaf10ace3c6ef",
            "sha256:5e47621858b3629202b1db1e24abbe4046124c002bbe943bc7ff6502933146c4"
        ],
        "type": "layers"
    }
}

Signed-off-by: Sn0rt Sn0rt@abc.shop.edu.cn

wking · 2016-11-07T21:51:32Z

image-layout.md

@@ -21,7 +21,7 @@ It also contains a file that is used to identify the layout version:

 This is an example image layout:

-```
+```shell


This language specification if for the shell language, but the following example is a shell session. It has both shell-language input (which the shell you add formats correctly) and unformatted output (which the shell you add also attempts to format). As an example:

$ echo "in this case, these are not shell keywords" in this case, these are not shell keywords

I'd rather leave these as language-agnostic blobs to avoid confusion.

console is the right directive.

@wking I'd recommend at least looking at the github markdown docs before giving direction on a PR.

I know shell is wrong for shell sessions, because I've made that mistake before myself. Looking at the Linguist docs, they have a separate ShellSession for these:

$ echo "in this case, these are not shell keywords" in this case, these are not shell keywords

Which is better than the shell version I posted earlier because the stdout in and case are not highlighted. Linguist is using atom/language-shellscript.

wking · 2016-11-07T21:53:32Z

image-layout.md

 ```
-$ cat ./refs/v1.0
-{"size": 4096, "digest": "sha256:e692418e4cbaf90ca69d05a66403747baa33ee08806650b51fab815ad7fc331f", "mediaType": "application/vnd.oci.image.manifest.list.v1+json"}


I'm agnostic about whether we pretty-print JSON output or not, although if we do I prefer jq ;).

jq is the current json de jour. I agree.

philips

I don't feel strongly on this but jq is the right thing to use in 2016

philips · 2016-11-16T21:40:13Z

image-layout.md

 ```
-$ cat ./refs/v1.0
-{"size": 4096, "digest": "sha256:e692418e4cbaf90ca69d05a66403747baa33ee08806650b51fab815ad7fc331f", "mediaType": "application/vnd.oci.image.manifest.list.v1+json"}


Sn0rt · 2016-11-23T02:52:37Z

fixed.
updated to jq.

wking · 2016-11-23T04:51:01Z

image-layout.md

+{
+    "size": 4096,
+    "digest": "sha256:e692418e4cbaf90ca69d05a66403747baa33ee08806650b51fab815ad7fc331f",
+    "mediaType": "application/vnd.oci.image.manifest.list.v1+json"


jq will use two-space indents by default.

jonboulle · 2016-11-24T13:27:19Z

image-layout.md

@@ -24,7 +24,7 @@ The image layout MUST also contain a file that is used to identify the layout ve

 This is an example image layout:

-```
+```shell


@Sn0rt can you make this change?

Signed-off-by: Sn0rt <sn0rt@abc.shop.edu.cn>

Sn0rt · 2016-11-28T09:03:15Z

PTAL

philips · 2016-11-30T23:56:55Z

LGTM

vbatts · 2016-12-01T00:25:25Z

LGTM

wking reviewed Nov 7, 2016

View reviewed changes

philips suggested changes Nov 16, 2016

View reviewed changes

wking reviewed Nov 23, 2016

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jonboulle reviewed Nov 24, 2016

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Update image-layout.md: fix json format in practice

3f85d01

Signed-off-by: Sn0rt <sn0rt@abc.shop.edu.cn>

vbatts merged commit 9fa0543 into opencontainers:master Dec 1, 2016

vbatts mentioned this pull request Jan 27, 2017

Bump version for v1.0.0-rc4 #537

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Update image-layout.md: fix json format in practice #453

Update image-layout.md: fix json format in practice #453

Sn0rt commented Nov 7, 2016 •

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Update image-layout.md: fix json format in practice #453

Update image-layout.md: fix json format in practice #453

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