Added parameter to limit logline count

README.md

@@ -9,10 +9,10 @@ Docker image for a random log generator, based on Alpine Linux.
 
 This image will execute a container which will generate four random log messages:
 
-* `2018-03-02T22:33:27-06:00 ERROR something happened in this execution.`
-* `2018-03-02T22:33:27-06:00 INFO takes the value and converts it to string.`
-* `2018-03-02T22:33:27-06:00 WARN variable not in use.`
-* `2018-03-02T22:33:27-06:00 DEBUG first loop completed.`
+- `2018-03-02T22:33:27-06:00 ERROR something happened in this execution.`
+- `2018-03-02T22:33:27-06:00 INFO takes the value and converts it to string.`
+- `2018-03-02T22:33:27-06:00 WARN variable not in use.`
+- `2018-03-02T22:33:27-06:00 DEBUG first loop completed.`
 
 ## Why this Image?
 
@@ -22,8 +22,8 @@ I've had the necessity to create a random logger to test log configurations with
 
 In this git repository you will find the docker image definitions for the random Logger for Alpine Linux
 
-* `Dockerfile` -> Contains image definition.
-* `entrypoint.sh` -> Shell code to generate log messages.
+- `Dockerfile` -> Contains image definition.
+- `entrypoint.sh` -> Shell code to generate log messages.
 
 ## How do I use this image?
 
@@ -36,6 +36,10 @@ docker pull chentex/random-logger:latest
 # use different intervals to print logs every random(100, 400) milliseconds
 docker run chentex/random-logger:latest 100 400
 
+# use the third parameter so limit the number of loglines (after generating the lines the container will stop).
+# if not set it runs infinite
+docker run chentex/random-logger:latest 100 400 100
+
 # to run the image just execute
 docker run -d chentex/random-logger:latest
 ```
@@ -57,8 +61,8 @@ docker logs <- container-id ->
 First things first, you can find these docker images in `chentex/random-logger`
 but you can also build a specific version on your own, you only need:
 
-* docker
-* git
+- docker
+- git
 
 Clone this repo
 
@@ -80,6 +84,7 @@ docker build -f Dockerfile -t yourbase/yourname:version .
 ```
 
 ---
+
 For more on docker build reference to the [Documentation](https://docs.docker.com/engine/reference/commandline/build/)
 
 You can get the source from the image in the [Repository](https://github.com/chentex/random-logger)

entrypoint.sh

@@ -1,5 +1,12 @@
 #!/bin/sh
-while [ 1 ]
+n=-1
+c=0
+if [ -n "$3" ]
+then
+   n=$3
+fi
+
+while [ $n -ne $c ]
 do
    WAIT=$(shuf -i $1-$2 -n 1)
    sleep $(echo "scale=4; $WAIT/1000" | bc)
@@ -15,4 +22,5 @@ do
       "4") echo "$D DEBUG This is a debug log that shows a log that can be ignored."
       ;;
    esac
+   c=$(( c+1 ))
 done