I noticed that we're using a homegrown package for assertions. The
functions are extremely similar to testify, but with enough slight
differences to be confusing (for example, Equal takes its arguments in a
different order). We already vendor testify, and it's used in a few
places by tests.
I also found some problems with pkg/testutil/assert. For example, the
NotNil function seems to be broken. It checks the argument against
"nil", which only works for an interface. If you pass in a nil map or
slice, the equality check will fail.
In the interest of avoiding NIH, I'm proposing replacing
pkg/testutil/assert with testify. The test code looks almost the same,
but we avoid the confusion of having two similar but slightly different
assertion packages, and having to maintain our own package instead of
using a commonly-used one.
In the process, I found a few places where the tests should halt if an
assertion fails, so I've made those cases (that I noticed) use "require"
instead of "assert", and I've vendored the "require" package from
testify alongside the already-present "assert" package.
Signed-off-by: Aaron Lehmann <aaron.lehmann@docker.com>
This fix is an attempt to address
https://github.com/docker/docker/pull/28213#issuecomment-273840405
Currently when specify table format with table `--format "table {{.ID}}..."`,
the delimiter in the header section of the table is always `"\t"`.
That is actually different from the content of the table as the delimiter
could be anything (or even contatenated with `.`, for example):
```
$ docker service ps web --format 'table {{.Name}}.{{.ID}}' --no-trunc
NAME ID
web.1.inyhxhvjcijl0hdbu8lgrwwh7
\_ web.1.p9m4kx2srjqmfms4igam0uqlb
```
This fix is an attampt to address the skewness of the table when delimiter
is not `"\t"`.
The basic idea is that, when header consists of `table` key, the header section
will be redendered the same way as content section. A map mapping each
placeholder name to the HEADER entry name is used for the context of the header.
Unit tests have been updated and added to cover the changes.
This fix is related to #28313.
Signed-off-by: Yong Tang <yong.tang.github@outlook.com>
This commit fixes panic when execute stats command:
* use --format {{.Name}} with --all when there're exited containers.
* use --format {{.Name}} while stating exited container.
The root cause is when stating an exited container, the result from the
api didn't contain the Name and ID field, which will make format
process panic.
Panic log is like this:
```
panic: runtime error: slice bounds out of range [recovered]
panic: runtime error: slice bounds out of range
goroutine 1 [running]:
panic(0xb20f80, 0xc420014110)
/usr/local/go/src/runtime/panic.go:500 +0x1a1
text/template.errRecover(0xc4201773e8)
/usr/local/go/src/text/template/exec.go:140 +0x2ad
panic(0xb20f80, 0xc420014110)
/usr/local/go/src/runtime/panic.go:458 +0x243
github.com/docker/docker/cli/command/formatter.(*containerStatsContext).Name(0xc420430160,
0x0, 0x0)
/go/src/github.com/docker/docker/cli/command/formatter/stats.go:148
+0x86
reflect.Value.call(0xb9a3a0, 0xc420430160, 0x2213, 0xbe3657, 0x4,
0x11bc9f8, 0x0, 0x0, 0x4d75b3, 0x1198940, ...)
/usr/local/go/src/reflect/value.go:434 +0x5c8
reflect.Value.Call(0xb9a3a0, 0xc420430160, 0x2213, 0x11bc9f8, 0x0, 0x0,
0xc420424028, 0xb, 0xb)
/usr/local/go/src/reflect/value.go:302 +0xa4
text/template.(*state).evalCall(0xc420177368, 0xb9a3a0, 0xc420430160,
0x16, 0xb9a3a0, 0xc420430160, 0x2213, 0x1178fa0, 0xc4203ea330,
0xc4203de283, ...)
/usr/local/go/src/text/template/exec.go:658 +0x530
```
Signed-off-by: Zhang Wei <zhangwei555@huawei.com>
This fix is an attempt to fix issue raised in #28005 where
`docker stats` on Windows shows Linux headers if there is
no containers in stats.
The reason for the issue is that, in case there is no container,
a header is faked in:
https://github.com/docker/docker/blob/v1.13.0/cli/command/formatter/formatter.go#L74-L78
which does not know OS type information (as OS was stored with container stat entries)
This fix tries to fix the issue by moving OS type information
to stats context (instead of individual container stats entry).
Additional unit tests have been added.
This fix fixes#28005.
Signed-off-by: Yong Tang <yong.tang.github@outlook.com>
This adds support to display names or id of container instead of what
was provided in the request.
This keeps the default behavior (`docker stats byname` will display
`byname` in the `CONTAINER` colmun and `docker stats byid` will display
the id in the `CONTAINER` column) but adds two new format directive.
Signed-off-by: Vincent Demeester <vincent@sbr.pm>
