events: add protos

Signed-off-by: Evan Hazlett <ejhazlett@gmail.com>

events: update events package to include emitter and use envelope proto

Signed-off-by: Evan Hazlett <ejhazlett@gmail.com>

events: add events service

Signed-off-by: Evan Hazlett <ejhazlett@gmail.com>

events: enable events service and update ctr events to use events service

Signed-off-by: Evan Hazlett <ejhazlett@gmail.com>

event listeners

Signed-off-by: Evan Hazlett <ejhazlett@gmail.com>

events: helper func for emitting in services

Signed-off-by: Evan Hazlett <ejhazlett@gmail.com>

events: improved cli for containers and tasks

Signed-off-by: Evan Hazlett <ejhazlett@gmail.com>

create event envelope with poster

Signed-off-by: Evan Hazlett <ejhazlett@gmail.com>

events: introspect event data to use for type url

Signed-off-by: Evan Hazlett <ejhazlett@gmail.com>

events: use pb encoding; add event types

Signed-off-by: Evan Hazlett <ejhazlett@gmail.com>

events: instrument content and snapshot services with events

Signed-off-by: Evan Hazlett <ejhazlett@gmail.com>

events: instrument image service with events

Signed-off-by: Evan Hazlett <ejhazlett@gmail.com>

events: instrument namespace service with events

Signed-off-by: Evan Hazlett <ejhazlett@gmail.com>

events: add namespace support

Signed-off-by: Evan Hazlett <ejhazlett@gmail.com>

events: only send events from namespace requested from client

Signed-off-by: Evan Hazlett <ejhazlett@gmail.com>

events: switch to go-events for broadcasting

Signed-off-by: Evan Hazlett <ejhazlett@gmail.com>

cmd/ctr/main.go

@@ -57,6 +57,7 @@ containerd CLI
 		runCommand,
 		deleteCommand,
 		namespacesCommand,
+		eventsCommand,
 		listCommand,
 		infoCommand,
 		killCommand,