summaryrefslogtreecommitdiff
path: root/libpod/events
diff options
context:
space:
mode:
Diffstat (limited to 'libpod/events')
-rw-r--r--libpod/events/config.go12
-rw-r--r--libpod/events/events.go9
-rw-r--r--libpod/events/filters.go20
-rw-r--r--libpod/events/journal_linux.go71
4 files changed, 86 insertions, 26 deletions
diff --git a/libpod/events/config.go b/libpod/events/config.go
index bb35c03c0..2ec3111fe 100644
--- a/libpod/events/config.go
+++ b/libpod/events/config.go
@@ -36,6 +36,18 @@ type Event struct {
Time time.Time
// Type of event that occurred
Type Type
+
+ Details
+}
+
+// Details describes specifics about certain events, specifically around
+// container events
+type Details struct {
+ // ID is the event ID
+ ID string
+ // Attributes can be used to describe specifics about the event
+ // in the case of a container event, labels for example
+ Attributes map[string]string
}
// EventerOptions describe options that need to be passed to create
diff --git a/libpod/events/events.go b/libpod/events/events.go
index 722c9595e..42939d64c 100644
--- a/libpod/events/events.go
+++ b/libpod/events/events.go
@@ -69,7 +69,14 @@ func (e *Event) ToHumanReadable() string {
var humanFormat string
switch e.Type {
case Container, Pod:
- humanFormat = fmt.Sprintf("%s %s %s %s (image=%s, name=%s)", e.Time, e.Type, e.Status, e.ID, e.Image, e.Name)
+ humanFormat = fmt.Sprintf("%s %s %s %s (image=%s, name=%s", e.Time, e.Type, e.Status, e.ID, e.Image, e.Name)
+ // check if the container has labels and add it to the output
+ if len(e.Attributes) > 0 {
+ for k, v := range e.Attributes {
+ humanFormat += fmt.Sprintf(", %s=%s", k, v)
+ }
+ }
+ humanFormat += ")"
case Image:
humanFormat = fmt.Sprintf("%s %s %s %s %s", e.Time, e.Type, e.Status, e.ID, e.Name)
case System:
diff --git a/libpod/events/filters.go b/libpod/events/filters.go
index c50474007..62891d32c 100644
--- a/libpod/events/filters.go
+++ b/libpod/events/filters.go
@@ -55,6 +55,24 @@ func generateEventFilter(filter, filterValue string) (func(e *Event) bool, error
return func(e *Event) bool {
return string(e.Type) == filterValue
}, nil
+
+ case "LABEL":
+ return func(e *Event) bool {
+ var found bool
+ // iterate labels and see if we match a key and value
+ for eventKey, eventValue := range e.Attributes {
+ filterValueSplit := strings.SplitN(filterValue, "=", 2)
+ // if the filter isn't right, just return false
+ if len(filterValueSplit) < 2 {
+ return false
+ }
+ if eventKey == filterValueSplit[0] && eventValue == filterValueSplit[1] {
+ found = true
+ break
+ }
+ }
+ return found
+ }, nil
}
return nil, errors.Errorf("%s is an invalid filter", filter)
}
@@ -73,7 +91,7 @@ func generateEventUntilOption(timeUntil time.Time) func(e *Event) bool {
}
func parseFilter(filter string) (string, string, error) {
- filterSplit := strings.Split(filter, "=")
+ filterSplit := strings.SplitN(filter, "=", 2)
if len(filterSplit) != 2 {
return "", "", errors.Errorf("%s is an invalid filter", filter)
}
diff --git a/libpod/events/journal_linux.go b/libpod/events/journal_linux.go
index dc55dbc77..5e3be8009 100644
--- a/libpod/events/journal_linux.go
+++ b/libpod/events/journal_linux.go
@@ -4,6 +4,7 @@ package events
import (
"context"
+ "encoding/json"
"strconv"
"time"
@@ -46,6 +47,15 @@ func (e EventJournalD) Write(ee Event) error {
if ee.ContainerExitCode != 0 {
m["PODMAN_EXIT_CODE"] = strconv.Itoa(ee.ContainerExitCode)
}
+ // If we have container labels, we need to convert them to a string so they
+ // can be recorded with the event
+ if len(ee.Details.Attributes) > 0 {
+ b, err := json.Marshal(ee.Details.Attributes)
+ if err != nil {
+ return err
+ }
+ m["PODMAN_LABELS"] = string(b)
+ }
case Volume:
m["PODMAN_NAME"] = ee.Name
}
@@ -59,35 +69,39 @@ func (e EventJournalD) Read(ctx context.Context, options ReadOptions) error {
if err != nil {
return errors.Wrapf(err, "failed to generate event options")
}
- j, err := sdjournal.NewJournal() //nolint
+ j, err := sdjournal.NewJournal()
if err != nil {
return err
}
- // TODO AddMatch and Seek seem to conflict
- // Issue filed upstream -> https://github.com/coreos/go-systemd/issues/315
- // Leaving commented code in case upstream fixes things
- //podmanJournal := sdjournal.Match{Field: "SYSLOG_IDENTIFIER", Value: "podman"} //nolint
- //if err := j.AddMatch(podmanJournal.String()); err != nil {
- // return errors.Wrap(err, "failed to add filter for event log")
- //}
+
+ // match only podman journal entries
+ podmanJournal := sdjournal.Match{Field: "SYSLOG_IDENTIFIER", Value: "podman"}
+ if err := j.AddMatch(podmanJournal.String()); err != nil {
+ return errors.Wrap(err, "failed to add journal filter for event log")
+ }
+
if len(options.Since) == 0 && len(options.Until) == 0 && options.Stream {
if err := j.SeekTail(); err != nil {
return errors.Wrap(err, "failed to seek end of journal")
}
- } else {
- podmanJournal := sdjournal.Match{Field: "SYSLOG_IDENTIFIER", Value: "podman"} //nolint
- if err := j.AddMatch(podmanJournal.String()); err != nil {
- return errors.Wrap(err, "failed to add filter for event log")
+ // After SeekTail calling Next moves to a random entry.
+ // To prevent this we have to call Previous first.
+ // see: https://bugs.freedesktop.org/show_bug.cgi?id=64614
+ if _, err := j.Previous(); err != nil {
+ return errors.Wrap(err, "failed to move journal cursor to previous entry")
}
}
+
// the api requires a next|prev before getting a cursor
if _, err := j.Next(); err != nil {
- return err
+ return errors.Wrap(err, "failed to move journal cursor to next entry")
}
+
prevCursor, err := j.GetCursor()
if err != nil {
- return err
+ return errors.Wrap(err, "failed to get journal cursor")
}
+
for {
select {
case <-ctx.Done():
@@ -96,30 +110,26 @@ func (e EventJournalD) Read(ctx context.Context, options ReadOptions) error {
default:
// fallthrough
}
+
if _, err := j.Next(); err != nil {
- return err
+ return errors.Wrap(err, "failed to move journal cursor to next entry")
}
newCursor, err := j.GetCursor()
if err != nil {
- return err
+ return errors.Wrap(err, "failed to get journal cursor")
}
if prevCursor == newCursor {
if len(options.Until) > 0 || !options.Stream {
break
}
- _ = j.Wait(sdjournal.IndefiniteWait) //nolint
+ _ = j.Wait(sdjournal.IndefiniteWait)
continue
}
prevCursor = newCursor
+
entry, err := j.GetEntry()
if err != nil {
- return err
- }
- // TODO this keeps us from feeding the podman event parser with
- // with regular journal content; it can be removed if the above
- // problem with AddMatch is resolved.
- if entry.Fields["PODMAN_EVENT"] == "" {
- continue
+ return errors.Wrap(err, "failed to read journal entry")
}
newEvent, err := newEventFromJournalEntry(entry)
if err != nil {
@@ -174,6 +184,19 @@ func newEventFromJournalEntry(entry *sdjournal.JournalEntry) (*Event, error) { /
newEvent.ContainerExitCode = intCode
}
}
+
+ // we need to check for the presence of labels recorded to a container event
+ if stringLabels, ok := entry.Fields["PODMAN_LABELS"]; ok && len(stringLabels) > 0 {
+ labels := make(map[string]string, 0)
+ if err := json.Unmarshal([]byte(stringLabels), &labels); err != nil {
+ return nil, err
+ }
+
+ // if we have labels, add them to the event
+ if len(labels) > 0 {
+ newEvent.Details = Details{Attributes: labels}
+ }
+ }
case Image:
newEvent.ID = entry.Fields["PODMAN_ID"]
}
generated by cgit v1.2.3-54-g00ecf (git 2.39.0) at 2024-10-07 09:27:10 +0000