podman logs: fix tailing

Fix issues with tailing of container logs as described
in issue #16.  Also add in the ability to use a duration or
known time stamp formats for the --since flag.

Signed-off-by: baude <bbaude@redhat.com>

Closes: #317
Approved by: mheon
This commit is contained in:
baude
2018-02-06 09:07:51 -06:00
committed by Atomic Bot
parent 75914199f3
commit fa9658cbfa
21 changed files with 230 additions and 1432 deletions

View File

@ -1,36 +0,0 @@
package watch
type FileChanges struct {
Modified chan bool // Channel to get notified of modifications
Truncated chan bool // Channel to get notified of truncations
Deleted chan bool // Channel to get notified of deletions/renames
}
func NewFileChanges() *FileChanges {
return &FileChanges{
make(chan bool), make(chan bool), make(chan bool)}
}
func (fc *FileChanges) NotifyModified() {
sendOnlyIfEmpty(fc.Modified)
}
func (fc *FileChanges) NotifyTruncated() {
sendOnlyIfEmpty(fc.Truncated)
}
func (fc *FileChanges) NotifyDeleted() {
sendOnlyIfEmpty(fc.Deleted)
}
// sendOnlyIfEmpty sends on a bool channel only if the channel has no
// backlog to be read by other goroutines. This concurrency pattern
// can be used to notify other goroutines if and only if they are
// looking for it (i.e., subsequent notifications can be compressed
// into one).
func sendOnlyIfEmpty(ch chan bool) {
select {
case ch <- true:
default:
}
}