3cc051f7c2
Providers must still update the implementaiton to actually gain any benefit here, but this makes the provider interface a bit more sane.
71 lines
1.9 KiB
Go
71 lines
1.9 KiB
Go
package api
|
|
|
|
import (
|
|
"context"
|
|
"io"
|
|
"net/http"
|
|
"strconv"
|
|
|
|
"github.com/cpuguy83/strongerrors"
|
|
"github.com/gorilla/mux"
|
|
"github.com/pkg/errors"
|
|
"github.com/virtual-kubelet/virtual-kubelet/log"
|
|
"github.com/virtual-kubelet/virtual-kubelet/providers"
|
|
)
|
|
|
|
// ContainerLogsBackend is used in place of backend implementations for getting container logs
|
|
type ContainerLogsBackend interface {
|
|
GetContainerLogs(ctx context.Context, namespace, podName, containerName string, opts providers.ContainerLogOpts) (io.ReadCloser, error)
|
|
}
|
|
|
|
// PodLogsHandlerFunc creates an http handler function from a provider to serve logs from a pod
|
|
func PodLogsHandlerFunc(p ContainerLogsBackend) http.HandlerFunc {
|
|
return handleError(func(w http.ResponseWriter, req *http.Request) error {
|
|
vars := mux.Vars(req)
|
|
if len(vars) != 3 {
|
|
return strongerrors.NotFound(errors.New("not found"))
|
|
}
|
|
|
|
ctx := req.Context()
|
|
|
|
namespace := vars["namespace"]
|
|
pod := vars["pod"]
|
|
container := vars["container"]
|
|
tail := 10
|
|
q := req.URL.Query()
|
|
|
|
if queryTail := q.Get("tailLines"); queryTail != "" {
|
|
t, err := strconv.Atoi(queryTail)
|
|
if err != nil {
|
|
return strongerrors.InvalidArgument(errors.Wrap(err, "could not parse \"tailLines\""))
|
|
}
|
|
tail = t
|
|
}
|
|
|
|
// TODO(@cpuguy83): support v1.PodLogOptions
|
|
// The kubelet decoding here is not straight forward, so this needs to be disected
|
|
|
|
opts := providers.ContainerLogOpts{
|
|
Tail: tail,
|
|
}
|
|
|
|
logs, err := p.GetContainerLogs(ctx, namespace, pod, container, opts)
|
|
if err != nil {
|
|
return errors.Wrap(err, "error getting container logs?)")
|
|
}
|
|
|
|
defer logs.Close()
|
|
|
|
req.Header.Set("Transfer-Encoding", "chunked")
|
|
|
|
if _, ok := w.(writeFlusher); !ok {
|
|
log.G(ctx).Debug("http response writer does not support flushes")
|
|
}
|
|
|
|
if _, err := io.Copy(flushOnWrite(w), logs); err != nil {
|
|
return strongerrors.Unknown(errors.Wrap(err, "error writing response to client"))
|
|
}
|
|
return nil
|
|
})
|
|
}
|