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pgraph: Add fast pausing and exiting of graphs

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This causes a graph to actually stop processing part way through, even
if there are poke's that want to continue on. This is so that the user
experience of pressing ^C actually causes a shutdown without finishing
the graph execution. It might be preferred to have this be a user
defined setting at some point in the future, such as if the user presses
^C twice. As well, we might want to implement an interrupt API so that
individual resource execution can be asked to bail out early if
requested. This could happen on a third ^C press.
This commit is contained in:
James Shubin
2017-03-13 07:44:01 -04:00
parent 074da4da19
commit cd5e2e1148
7 changed files with 188 additions and 3 deletions
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10
test/shell/graph-exit1.sh Executable file
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#!/bin/bash -e
# should take 15 seconds for longest resources plus startup time to shutdown
# we don't want the ^C to allow the rest of the graph to continue executing!
$timeout --kill-after=35s 25s ./mgmt run --yaml graph-exit.yaml --no-watch --no-pgp --tmp-prefix &
pid=$!
sleep 5s # let the initial resources start to run...
killall -SIGINT mgmt # send ^C to exit mgmt
wait $pid # get exit status
exit $?

71
test/shell/graph-exit1.yaml Normal file
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---
graph: parallel
resources:
exec:
- name: exec1
cmd: sleep 15s
shell: ''
timeout: 0
watchcmd: ''
watchshell: ''
ifcmd: ''
ifshell: ''
state: present
- name: exec2
cmd: sleep 15s
shell: ''
timeout: 0
watchcmd: ''
watchshell: ''
ifcmd: ''
ifshell: ''
state: present
- name: exec3
cmd: sleep 15s
shell: ''
timeout: 0
watchcmd: ''
watchshell: ''
ifcmd: ''
ifshell: ''
state: present
- name: exec4
cmd: sleep 15s
shell: ''
timeout: 0
watchcmd: ''
watchshell: ''
ifcmd: ''
ifshell: ''
state: present
- name: exec0
cmd: sleep 15s
shell: ''
timeout: 0
watchcmd: ''
watchshell: ''
ifcmd: ''
ifshell: ''
state: present
edges:
- name: e1
from:
kind: exec
name: exec1
to:
kind: exec
name: exec2
- name: e2
from:
kind: exec
name: exec2
to:
kind: exec
name: exec3
- name: e3
from:
kind: exec
name: exec3
to:
kind: exec
name: exec4

10
test/shell/graph-exit2.sh Executable file
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@@ -0,0 +1,10 @@
#!/bin/bash -e
# should take 15 seconds for longest resources plus startup time to shutdown
# we don't want the ^C to allow the rest of the graph to continue executing!
$timeout --kill-after=45s 35s ./mgmt run --yaml graph-exit.yaml --no-watch --no-pgp --tmp-prefix &
pid=$!
sleep 10s # let the initial resources start to run...
killall -SIGINT mgmt # send ^C to exit mgmt
wait $pid # get exit status
exit $?

74
test/shell/graph-exit2.yaml Normal file
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---
graph: parallel
resources:
exec:
- name: exec1
meta:
retry: 10
delay: 1000
cmd: 'sleep 5s && exit 13'
shell: '/bin/bash'
timeout: 0
watchcmd: ''
watchshell: ''
ifcmd: ''
ifshell: ''
state: present
- name: exec2
cmd: sleep 15s
shell: ''
timeout: 0
watchcmd: ''
watchshell: ''
ifcmd: ''
ifshell: ''
state: present
- name: exec3
cmd: sleep 15s
shell: ''
timeout: 0
watchcmd: ''
watchshell: ''
ifcmd: ''
ifshell: ''
state: present
- name: exec4
cmd: sleep 15s
shell: ''
timeout: 0
watchcmd: ''
watchshell: ''
ifcmd: ''
ifshell: ''
state: present
- name: exec0
cmd: sleep 15s
shell: ''
timeout: 0
watchcmd: ''
watchshell: ''
ifcmd: ''
ifshell: ''
state: present
edges:
- name: e1
from:
kind: exec
name: exec1
to:
kind: exec
name: exec2
- name: e2
from:
kind: exec
name: exec2
to:
kind: exec
name: exec3
- name: e3
from:
kind: exec
name: exec3
to:
kind: exec
name: exec4