The goal is to remove function from `docker_utils.go` and setup
simple, one-responsability package that can be well tested ; and to
ease writing request.
This moves all the calls to `sockRequest` (and similar methods) to
their counterpart in the `request` package.
This introduce `request.Do` to write easier request (with functional
argument to easily augment the request) with some pre-defined function
for the most used http method (i.e. `request.Get`, `request.Post` and
`request.Delete`).
Few of the `sockRequest` call have been moved to `request.Do` (and
`Get`, etc.) to showcase the usage of the package. There is still a
whole lot to do.
Signed-off-by: Vincent Demeester <vincent@sbr.pm>
If the container is not found when removing, it means it's already not
there anymore, so it's safe to ignore. This should reduce a bit some
`TearDown` flakyness..
Signed-off-by: Vincent Demeester <vincent@sbr.pm>
the restart policy validation was moved from
the client to the daemon in 94e95e4711
As part of that change, retry-counts < 1
were marked as "invalid".
However, the default is 0 (unlimited), causing
docker run -d --restart=on-failure nginx
To fail.
This changes the validation to only invalidate
retry-counts < 0.
A test was added, and other tests renamed
to allow running just these tests :)
Signed-off-by: Sebastiaan van Stijn <github@gone.nl>
No substantial code change.
- Api --> API
- Cli --> CLI
- Http, Https --> HTTP, HTTPS
- Id --> ID
- Uid,Gid,Pid --> UID,PID,PID
- Ipam --> IPAM
- Tls --> TLS (TestDaemonNoTlsCliTlsVerifyWithEnv --> TestDaemonTLSVerifyIssue13964)
Didn't touch in this commit:
- Git: because it is officially "Git": https://git-scm.com/
- Tar: because it is officially "Tar": https://www.gnu.org/software/tar/
- Cpu, Nat, Mac, Ipc, Shm: for keeping a consistency with existing production code (not changable, for compatibility)
Signed-off-by: Akihiro Suda <suda.akihiro@lab.ntt.co.jp>
`Mounts` allows users to specify in a much safer way the volumes they
want to use in the container.
This replaces `Binds` and `Volumes`, which both still exist, but
`Mounts` and `Binds`/`Volumes` are exclussive.
The CLI will continue to use `Binds` and `Volumes` due to concerns with
parsing the volume specs on the client side and cross-platform support
(for now).
The new API follows exactly the services mount API.
Example usage of `Mounts`:
```
$ curl -XPOST localhost:2375/containers/create -d '{
"Image": "alpine:latest",
"HostConfig": {
"Mounts": [{
"Type": "Volume",
"Target": "/foo"
},{
"Type": "bind",
"Source": "/var/run/docker.sock",
"Target": "/var/run/docker.sock",
},{
"Type": "volume",
"Name": "important_data",
"Target": "/var/data",
"ReadOnly": true,
"VolumeOptions": {
"DriverConfig": {
Name: "awesomeStorage",
Options: {"size": "10m"},
Labels: {"some":"label"}
}
}]
}
}'
```
There are currently 2 types of mounts:
- **bind**: Paths on the host that get mounted into the
container. Paths must exist prior to creating the container.
- **volume**: Volumes that persist after the
container is removed.
Not all fields are available in each type, and validation is done to
ensure these fields aren't mixed up between types.
Signed-off-by: Brian Goff <cpuguy83@gmail.com>
This fix tries to address the issue in 25000 where `docker stats`
will not show network stats with `NetworkDisabled=true`.
The `NetworkDisabled=true` could be either invoked through
remote API, or through `docker daemon -b none`.
The issue was that when `NetworkDisabled=true` either by API or
by daemon config, there is no SandboxKey for container so an error
will be returned.
This fix fixes this issue by skipping obtaining SandboxKey if
`NetworkDisabled=true`.
Additional test has bee added to cover the changes.
This fix fixes 25000.
Signed-off-by: Yong Tang <yong.tang.github@outlook.com>
If AutoRemove is set, wait until client get `destroy` events, or get
`detach` events that implies container is detached but not stopped.
Signed-off-by: Zhang Wei <zhangwei555@huawei.com>
This endpoint has been deprecated since 1.8. Return an error starting
from this API version (1.24) in order to make sure it's not used for the
next API version and so that we can remove it some times later.
Signed-off-by: Vincent Demeester <vincent@sbr.pm>
This fix tries to fix the http panics caused by container deletion
with empty names in #22210.
The issue was because when an empty string was passed, `GetByName()`
tried to access the first element of the name string without checking
the length. A length check has been added.
A test case for #22210 has been added.
This fix fixes#22210.
Signed-off-by: Yong Tang <yong.tang.github@outlook.com>
Moving all strings to the errors package wasn't a good idea after all.
Our custom implementation of Go errors predates everything that's nice
and good about working with errors in Go. Take as an example what we
have to do to get an error message:
```go
func GetErrorMessage(err error) string {
switch err.(type) {
case errcode.Error:
e, _ := err.(errcode.Error)
return e.Message
case errcode.ErrorCode:
ec, _ := err.(errcode.ErrorCode)
return ec.Message()
default:
return err.Error()
}
}
```
This goes against every good practice for Go development. The language already provides a simple, intuitive and standard way to get error messages, that is calling the `Error()` method from an error. Reinventing the error interface is a mistake.
Our custom implementation also makes very hard to reason about errors, another nice thing about Go. I found several (>10) error declarations that we don't use anywhere. This is a clear sign about how little we know about the errors we return. I also found several error usages where the number of arguments was different than the parameters declared in the error, another clear example of how difficult is to reason about errors.
Moreover, our custom implementation didn't really make easier for people to return custom HTTP status code depending on the errors. Again, it's hard to reason about when to set custom codes and how. Take an example what we have to do to extract the message and status code from an error before returning a response from the API:
```go
switch err.(type) {
case errcode.ErrorCode:
daError, _ := err.(errcode.ErrorCode)
statusCode = daError.Descriptor().HTTPStatusCode
errMsg = daError.Message()
case errcode.Error:
// For reference, if you're looking for a particular error
// then you can do something like :
// import ( derr "github.com/docker/docker/errors" )
// if daError.ErrorCode() == derr.ErrorCodeNoSuchContainer { ... }
daError, _ := err.(errcode.Error)
statusCode = daError.ErrorCode().Descriptor().HTTPStatusCode
errMsg = daError.Message
default:
// This part of will be removed once we've
// converted everything over to use the errcode package
// FIXME: this is brittle and should not be necessary.
// If we need to differentiate between different possible error types,
// we should create appropriate error types with clearly defined meaning
errStr := strings.ToLower(err.Error())
for keyword, status := range map[string]int{
"not found": http.StatusNotFound,
"no such": http.StatusNotFound,
"bad parameter": http.StatusBadRequest,
"conflict": http.StatusConflict,
"impossible": http.StatusNotAcceptable,
"wrong login/password": http.StatusUnauthorized,
"hasn't been activated": http.StatusForbidden,
} {
if strings.Contains(errStr, keyword) {
statusCode = status
break
}
}
}
```
You can notice two things in that code:
1. We have to explain how errors work, because our implementation goes against how easy to use Go errors are.
2. At no moment we arrived to remove that `switch` statement that was the original reason to use our custom implementation.
This change removes all our status errors from the errors package and puts them back in their specific contexts.
IT puts the messages back with their contexts. That way, we know right away when errors used and how to generate their messages.
It uses custom interfaces to reason about errors. Errors that need to response with a custom status code MUST implementent this simple interface:
```go
type errorWithStatus interface {
HTTPErrorStatusCode() int
}
```
This interface is very straightforward to implement. It also preserves Go errors real behavior, getting the message is as simple as using the `Error()` method.
I included helper functions to generate errors that use custom status code in `errors/errors.go`.
By doing this, we remove the hard dependency we have eeverywhere to our custom errors package. Yes, you can use it as a helper to generate error, but it's still very easy to generate errors without it.
Please, read this fantastic blog post about errors in Go: http://dave.cheney.net/2014/12/24/inspecting-errors
Signed-off-by: David Calavera <david.calavera@gmail.com>
This will allow us to have a windows-to-linux CI, where the linux host
can be anywhere, connecting with TLS.
Signed-off-by: Tibor Vass <tibor@docker.com>
1. Replace raw `docker inspect -f xxx` with `inspectField`, to make code
cleaner and more consistent
2. assert the error in function `inspectField*` so we don't need to
assert the return value of it every time, this will make inspect easier.
Signed-off-by: Zhang Wei <zhangwei555@huawei.com>
Add `runSleepingContainer` and `runSleepingContainerInImage` helper
functions to factor out the way to run system-specific idle containers.
Define a sleeping container as command `top` in image `busybox` for
Unix and as command `sleep 60` in image `busybox` for Windows. Provide a
single point of code to update those.
Signed-off-by: Arnaud Porterie <arnaud.porterie@docker.com>
