This is a follow-up to 0e73168b7e
This repository is not yet a module (i.e., does not have a `go.mod`). This
is not problematic when building the code in GOPATH or "vendor" mode, but
when using the code as a module-dependency (in module-mode), different semantics
are applied since Go1.21, which switches Go _language versions_ on a per-module,
per-package, or even per-file base.
A condensed summary of that logic [is as follows][1]:
- For modules that have a go.mod containing a go version directive; that
version is considered a minimum _required_ version (starting with the
go1.19.13 and go1.20.8 patch releases: before those, it was only a
recommendation).
- For dependencies that don't have a go.mod (not a module), go language
version go1.16 is assumed.
- Likewise, for modules that have a go.mod, but the file does not have a
go version directive, go language version go1.16 is assumed.
- If a go.work file is present, but does not have a go version directive,
language version go1.17 is assumed.
When switching language versions, Go _downgrades_ the language version,
which means that language features (such as generics, and `any`) are not
available, and compilation fails. For example:
# github.com/docker/cli/cli/context/store
/go/pkg/mod/github.com/docker/cli@v25.0.0-beta.2+incompatible/cli/context/store/storeconfig.go:6:24: predeclared any requires go1.18 or later (-lang was set to go1.16; check go.mod)
/go/pkg/mod/github.com/docker/cli@v25.0.0-beta.2+incompatible/cli/context/store/store.go:74:12: predeclared any requires go1.18 or later (-lang was set to go1.16; check go.mod)
Note that these fallbacks are per-module, per-package, and can even be
per-file, so _(indirect) dependencies_ can still use modern language
features, as long as their respective go.mod has a version specified.
Unfortunately, these failures do not occur when building locally (using
vendor / GOPATH mode), but will affect consumers of the module.
Obviously, this situation is not ideal, and the ultimate solution is to
move to go modules (add a go.mod), but this comes with a non-insignificant
risk in other areas (due to our complex dependency tree).
We can revert to using go1.16 language features only, but this may be
limiting, and may still be problematic when (e.g.) matching signatures
of dependencies.
There is an escape hatch: adding a `//go:build` directive to files that
make use of go language features. From the [go toolchain docs][2]:
> The go line for each module sets the language version the compiler enforces
> when compiling packages in that module. The language version can be changed
> on a per-file basis by using a build constraint.
>
> For example, a module containing code that uses the Go 1.21 language version
> should have a `go.mod` file with a go line such as `go 1.21` or `go 1.21.3`.
> If a specific source file should be compiled only when using a newer Go
> toolchain, adding `//go:build go1.22` to that source file both ensures that
> only Go 1.22 and newer toolchains will compile the file and also changes
> the language version in that file to Go 1.22.
This patch adds `//go:build` directives to those files using recent additions
to the language. It's currently using go1.19 as version to match the version
in our "vendor.mod", but we can consider being more permissive ("any" requires
go1.18 or up), or more "optimistic" (force go1.21, which is the version we
currently use to build).
For completeness sake, note that any file _without_ a `//go:build` directive
will continue to use go1.16 language version when used as a module.
[1]: 58c28ba286/src/cmd/go/internal/gover/version.go (L9-L56)
[2]; https://go.dev/doc/toolchain#:~:text=The%20go%20line%20for,file%20to%20Go%201.22
Signed-off-by: Sebastiaan van Stijn <github@gone.nl>
cli/compose/types/types.go:568:17: fmt.Sprintf can be replaced with faster strconv.FormatBool (perfsprint)
return []byte(fmt.Sprintf("%v", e.External)), nil
^
cli/command/formatter/buildcache.go:174:9: fmt.Sprintf can be replaced with faster strconv.Itoa (perfsprint)
return fmt.Sprintf("%d", c.v.UsageCount)
^
cli/command/formatter/buildcache.go:178:9: fmt.Sprintf can be replaced with faster strconv.FormatBool (perfsprint)
return fmt.Sprintf("%t", c.v.InUse)
^
cli/command/formatter/buildcache.go:182:9: fmt.Sprintf can be replaced with faster strconv.FormatBool (perfsprint)
return fmt.Sprintf("%t", c.v.Shared)
^
cli/command/formatter/image.go:259:9: fmt.Sprintf can be replaced with faster strconv.FormatInt (perfsprint)
return fmt.Sprintf("%d", c.i.Containers)
^
cli/command/formatter/tabwriter/tabwriter_test.go:698:9: fmt.Sprintf can be replaced with faster strconv.Itoa (perfsprint)
b.Run(fmt.Sprintf("%d", x), func(b *testing.B) {
^
cli/command/formatter/tabwriter/tabwriter_test.go:720:9: fmt.Sprintf can be replaced with faster strconv.Itoa (perfsprint)
b.Run(fmt.Sprintf("%d", h), func(b *testing.B) {
^
cli/command/image/prune.go:62:31: fmt.Sprintf can be replaced with faster strconv.FormatBool (perfsprint)
pruneFilters.Add("dangling", fmt.Sprintf("%v", !options.all))
^
cli/command/network/formatter.go:92:9: fmt.Sprintf can be replaced with faster strconv.FormatBool (perfsprint)
return fmt.Sprintf("%v", c.n.EnableIPv6)
^
cli/command/network/formatter.go:96:9: fmt.Sprintf can be replaced with faster strconv.FormatBool (perfsprint)
return fmt.Sprintf("%v", c.n.Internal)
^
cli/command/service/formatter.go:745:9: fmt.Sprintf can be replaced with faster strconv.FormatUint (perfsprint)
pub = fmt.Sprintf("%d", pr.pStart)
^
cli/command/service/formatter.go:750:9: fmt.Sprintf can be replaced with faster strconv.FormatUint (perfsprint)
tgt = fmt.Sprintf("%d", pr.tStart)
^
cli/command/service/opts.go:49:10: fmt.Sprintf can be replaced with faster strconv.FormatUint (perfsprint)
return fmt.Sprintf("%v", *i.value)
^
cli/compose/loader/loader.go:720:36: fmt.Sprint can be replaced with faster strconv.Itoa (perfsprint)
v, err := toServicePortConfigs(fmt.Sprint(value))
^
Signed-off-by: Sebastiaan van Stijn <github@gone.nl>
Various fixes:
- Don't capitalize error messages
- Rename variables that collided with imports or types
- Prefer assert.Check over assert.Assert to prevent tests covering multiple
cases from failing early
- Fix inconsistent order of expected <--> actual, which made it difficult to
check which output was the expected output.
- Fix formatting of some comments
Signed-off-by: Sebastiaan van Stijn <github@gone.nl>
Both libaries provide similar functionality. We're currently using
Google Shlex in more places, so prefering that one for now, but we
could decide to switch to mattn/go-shellwords in future if that
library is considered better (it looks to be more actively maintained,
but that may be related to it providing "more features").
Signed-off-by: Sebastiaan van Stijn <github@gone.nl>
When deploying a stack using a relative path as bind-mount
source in the compose file, the CLI converts the relative
path to an absolute path, relative to the location of the
docker-compose file.
This causes a problem when deploying a stack that uses
an absolute Windows path, because a non-Windows client will
fail to detect that the path (e.g. `C:\somedir`) is an absolute
path (and not a relative directory named `C:\`).
The existing code did already take Windows clients deploying
a Linux stack into account (by checking if the path had a leading
slash). This patch adds the reverse, and adds detection for Windows
absolute paths on non-Windows clients.
The code used to detect Windows absolute paths is copied from the
Golang filepath package;
1d0e94b1e1/src/path/filepath/path_windows.go (L12-L65)
Signed-off-by: Sebastiaan van Stijn <github@gone.nl>
This should make it easier for people to write custom composefile
parser without duplicating too much code. It takes the default
transformers and any additional number of transformer for any
types. That way it's possible to transform a `cli/compose` map into a
custom type that would use some of `cli/compose` types and its own.
Signed-off-by: Vincent Demeester <vincent@sbr.pm>
- Add the possibility to skip interpolation
- Add the possibility to skip schema validation
- Allow customizing the substitution function, to add special cases.
Signed-off-by: Vincent Demeester <vincent@sbr.pm>
That field is automaticaly populated with any `x-*` field in the yaml.
And marshalling the compose config struct put them back into place.
This make it possible to get those extra fields without re-inventing
the wheel (i.e. reimplementing 80% of the `cli/compose/*` packages.
Signed-off-by: Vincent Demeester <vincent@sbr.pm>
- Add `Version` to `types.Config`
- Add a new `Services` types (that is just `[]ServiceConfig`) and add
`MarshalYAML` method on it.
- Clean other top-level custom marshaling as `Services` is the only one
required.
Signed-off-by: Vincent Demeester <vincent@sbr.pm>
Extra hosts (`extra_hosts` in compose-file, or `--hosts` in services) adds
custom host/ip mappings to the container's `/etc/hosts`.
The current implementation used a `map[string]string{}` as intermediate
storage, and sorted the results alphabetically when converting to a service-spec.
As a result, duplicate hosts were removed, and order of host/ip mappings was not
preserved (in case the compose-file used a list instead of a map).
According to the **host.conf(5)** man page (http://man7.org/linux/man-pages/man5/host.conf.5.html)
multi Valid values are on and off. If set to on, the resolver
library will return all valid addresses for a host that
appears in the /etc/hosts file, instead of only the first.
This is off by default, as it may cause a substantial
performance loss at sites with large hosts files.
Multiple entries for a host are allowed, and even required for some situations,
for example, to add mappings for IPv4 and IPv6 addreses for a host, as illustrated
by the example hosts file in the **hosts(5)** man page (http://man7.org/linux/man-pages/man5/hosts.5.html):
# The following lines are desirable for IPv4 capable hosts
127.0.0.1 localhost
# 127.0.1.1 is often used for the FQDN of the machine
127.0.1.1 thishost.mydomain.org thishost
192.168.1.10 foo.mydomain.org foo
192.168.1.13 bar.mydomain.org bar
146.82.138.7 master.debian.org master
209.237.226.90 www.opensource.org
# The following lines are desirable for IPv6 capable hosts
::1 localhost ip6-localhost ip6-loopback
ff02::1 ip6-allnodes
ff02::2 ip6-allrouters
This patch changes the intermediate storage format to use a `[]string`, and only
sorts entries if the input format in the compose file is a mapping. If the input
format is a list, the original sort-order is preserved.
Signed-off-by: Sebastiaan van Stijn <github@gone.nl>
Signed-off-by: Liping Xue <lipingxue@gmail.com>
Change to enable volume name can be customized.
Signed-off-by: Liping Xue <lipingxue@gmail.com>
Change to enable volume name can be customized.
Remove unused debug info.
Address comments from Daniel and solve the lint error.
Signed-off-by: Liping Xue <lipingxue@gmail.com>
Address Daniel's comments to print warning message when name of external volume is set in loader code.
Signed-off-by: Liping Xue <lipingxue@gmail.com>
Address Daniel's comments to return error when external volume is set in loader code.
Signed-off-by: Liping Xue <lipingxue@gmail.com>
Address Daniel's comments to return error when external volume is set in loader code.
Signed-off-by: Liping Xue <lipingxue@gmail.com>
Remove the case that specifying external volume name in full-example.yml.
More fix.
Add unit test.
Signed-off-by: Liping Xue <lipingxue@gmail.com>
Address comments from Daniel, move the schema change to v3.4.
Signed-off-by: Liping Xue <lipingxue@gmail.com>
Address comments from Sebastiaan. Signed-off-by: Liping Xue <lipingxue@gmail.com>
Address comments from Misty.
Signed-off-by: Liping Xue <lipingxue@gmail.com>
For stack compose files, use filepath.IsAbs instead of path.IsAbs, for
bind-mounted service volumes, because filepath.IsAbs handles Windows
paths, while path.IsAbs does not.
Signed-off-by: John Stephens <johnstep@docker.com>
Sebastiaan van Stijn
Silvin Lubecki
Ulysses Souza
Sune Keller
Mindaugas Rukas
Joffrey F
Vincent Demeester
Daniel Nephin
Ethan Haynes
Daniel Nephin
Ilya Sotkov
Simon Ferquel
Victor Vieux
Liping Xue
Aaron Lehmann
John Stephens
Brian Goff