Add env-var to set initial log-levels

name of environment variable: DLT_INITIAL_LOG_LEVEL

Syntax:
   <apid1>:<ctid1>:<loglevel1>;<apid2>:<ctid2>:<loglevel2>;...
   apid: application id (up to 4 chars), if empty all applications will match
   ctid: context id (up to 4 chars), if empty all contexts will match
   loglevel: either -1..6 or a symbolic name (default, off, fatal, error,
                                              warning, info, debug, verbose)

Examples:
DLT_INITIAL_LOG_LEVEL=TEST:LOG:0
-> turn off logging for appid TEST and contextid LOG

DLT_INITIAL_LOG_LEVEL=:LOG:warn
-> for contexts with name "LOG" set log-level to warning (3)

DLT_INITIAL_LOG_LEVEL=::VERBOSE
-> set log-level of all contexts to VERBOSE

DLT_INITIAL_LOG_LEVEL=::VERBOSE;TEST:LOG:3
-> set log-level of all contexts to VERBOSE except TEST:LOG, set this to WARNING

dlt-example-user: add option -l to specify log-level to be used when sending messages
Signed-off-by: Stefan Vacek <stefan.vacek@intel.com>

1 files changed, 59 insertions, 0 deletions

diff --git a/src/tests/dlt-test-change-ll-through-env.sh b/src/tests/dlt-test-change-ll-through-env.sh
new file mode 100755
index 0000000..0a469cc
--- /dev/null
+++ b/src/tests/dlt-test-change-ll-through-env.sh
@@ -0,0 +1,59 @@
+#!/bin/bash
+
+# check if dlt-daemon is running
+daemon_running=`/usr/bin/ps -C dlt-daemon | wc -l`
+daemon_pid=0
+
+if [ "$daemon_running" -lt "2" ]; then
+  echo "No daemon running, starting one myself"
+  /usr/bin/dlt-daemon > /tmp/dlt_daemon_dlt_receiver_test.txt & 
+  daemon_pid=$!
+  echo "daemon pid: " ${daemon_pid}
+else
+  echo "dlt-daemon already running"
+fi
+
+# create a directory in /tmp where all logs will be stored
+output_dir=`mktemp -d /tmp/DLT_TESTING_XXXXXX`
+echo "Using directory " ${output_dir}
+
+# start dlt-receive (in background) and store PID
+echo "Starting dlt-receive"
+/usr/bin/dlt-receive -o ${output_dir}/dlt_test.dlt localhost &
+dlt_receive_pid=$!
+disown
+
+# start dlt-example-user to create some logs
+# sleep time: 100ms
+# number of messages: 10
+/usr/bin/dlt-example-user -d 100 -n 10 TEST_MESSAGE_ONE
+
+# stop dlt-receive
+kill ${dlt_receive_pid}
+
+# show content of /tmp
+echo "log-file after first run"
+ls -l ${output_dir}
+
+# start dlt-receive (in background) and store PID
+echo "Starting dlt-receive"
+/usr/bin/dlt-receive -o ${output_dir}/dlt_test_no_log.dlt localhost &
+dlt_receive_pid=$!
+disown
+
+# start dlt-example-user to create some logs, disable logging through environment variable
+DLT_INITIAL_LOG_LEVEL=::-1 /usr/bin/dlt-example-user -d 100 -n 10 TEST_MESSAGE_TWO
+
+# show content of /tmp, log should not contain log messages from dlt-example-user (TEST_MESSAGE_TWO)
+kill ${dlt_receive_pid}
+echo "log-file after second run"
+ls -l ${output_dir}
+
+# directory will not be cleaned up
+echo "Used directory " ${output_dir}
+
+
+if [ "${daemon_pid}" -ne "0" ]; then
+  sleep 1
+  kill ${daemon_pid}
+fi