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feat(job-regist): add new bash exercise

- are the current test cases enough?
pull/1850/head
nprimo 2 years ago committed by Niccolò Primo
parent
commit
81cd3cbd11
  1. 59
      sh/tests/job-regist_test.sh
  2. 11
      sh/tests/solutions/job-regist.sh
  3. 33
      subjects/devops/job-regist/README.md

59
sh/tests/job-regist_test.sh

@ -0,0 +1,59 @@
#!/usr/bin/env bash
# create a function to be called everytime the process exit
abort () {
rm exp.log job.log
}
trap 'abort' EXIT
set -euo pipefail
IFS='
'
script_dirS=$(cd -P "$(dirname "$BASH_SOURCE")" &>/dev/null && pwd)
SUBMITTED='student/job-regist.sh'
EXPECTED='solutions/job-regist.sh'
wait_bg_jobs () {
while [ -n "$(jobs | grep -i running)" ]; do
echo -n "."
sleep 1
done
echo
}
# test cases
one_process () {
sleep 2 &
source $script_dirS/$1
}
two_processes () {
sleep 3 &
sleep 4 &
source $script_dirS/$1
}
one_process_and_kill () {
echo do something
}
one_process_and_suspend () {
echo do something
}
# end of test cases
challenge () {
echo "testing $1 case"
$1 $SUBMITTED &
$1 $EXPECTED &
wait_bg_jobs
diff <(cat exp.log) <(cat job.log)
}
challenge one_process
challenge two_processes

11
sh/tests/solutions/job-regist.sh

@ -0,0 +1,11 @@
#!/usr/bin/env bash
IFS='
'
PID=$(jobs -l %1 | grep -Eo '[\+\-] [0-9]+' | grep -Eo '[0-9]+')
LOG_FILE="exp.log"
while kill -0 "$PID" 2> /dev/null; do
echo $(date +"%F %T") - $(jobs %1) >> "$LOG_FILE"
sleep 1
done

33
subjects/devops/job-regist/README.md

@ -0,0 +1,33 @@
## job-regist
### Instruction
Create a script, `job-regist.sh`, that will be able to monitor a specific background job.
The script needs to track the status of the first jobs spawned by the current terminal and periodically save the status into a `job.log` file. It must append the new update without modifying the previous content.
Each update needs to be appended to the file with the current format: `YYYY-MM-DD hh:mm:ss - <job status>`
The script should stop running as soon as the job it is tracking ends.
### Usage
Here an example of how the script should behave:
```console
$ sleep 10 &
$ sleep 12 &
$ source job-regist.sh
$ cat job.log
2023-02-08 10:37:50 - [1]+ Running sleep 10 &
2023-02-08 10:37:51 - [1]+ Running sleep 10 &
2023-02-08 10:37:52 - [1]+ Running sleep 10 &
2023-02-08 10:37:53 - [1]+ Running sleep 10 &
2023-02-08 10:37:54 - [1]+ Running sleep 10 &
2023-02-08 10:37:55 - [1]+ Running sleep 10 &
2023-02-08 10:37:56 - [1]+ Running sleep 10 &
2023-02-08 10:37:57 - [1]+ Running sleep 10 &
2023-02-08 10:37:58 - [1]+ Running sleep 10 &
2023-02-08 10:37:59 - [1]+ Running sleep 10 &
$
```
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