generic-poky/meta/classes/logging.bbclass

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# The following logging mechanisms are to be used in bash functions of recipes.
# They are intended to map one to one in intention and output format with the
# python recipe logging functions of a similar naming convention: bb.plain(),
# bb.note(), etc.
#
# For the time being, all of these print only to the task logs. Future
# enhancements may integrate these calls with the bitbake logging
# infrastructure, allowing for printing to the console as appropriate. The
# interface and intention statements reflect that future goal. Once it is
# in place, no changes will be necessary to recipes using these logging
# mechanisms.
# Print the output exactly as it is passed in. Typically used for output of
# tasks that should be seen on the console. Use sparingly.
# Output: logs console
# NOTE: console output is not currently implemented.
bbplain() {
echo "$*"
}
# Notify the user of a noteworthy condition.
# Output: logs console
# NOTE: console output is not currently implemented.
bbnote() {
echo "NOTE: $*"
}
# Print a warning to the log. Warnings are non-fatal, and do not
# indicate a build failure.
# Output: logs
bbwarn() {
echo "WARNING: $*"
}
# Print an error to the log. Errors are non-fatal in that the build can
# continue, but they do indicate a build failure.
# Output: logs
bberror() {
echo "ERROR: $*"
}
# Print a fatal error to the log. Fatal errors indicate build failure
# and halt the build, exiting with an error code.
# Output: logs
bbfatal() {
echo "ERROR: $*"
exit 1
}
# Print debug messages. These are appropriate for progress checkpoint
# messages to the logs. Depending on the debug log level, they may also
# go to the console.
# Output: logs console
# Usage: bbdebug 1 "first level debug message"
# bbdebug 2 "second level debug message"
# NOTE: console output is not currently implemented.
bbdebug() {
USAGE='Usage: bbdebug [123] "message"'
if [ $# -lt 2 ]; then
bbfatal "$USAGE"
fi
# Strip off the debug level and ensure it is an integer
DBGLVL=$1; shift
if ! [[ "$DBGLVL" =~ ^[0-9]+ ]]; then
bbfatal "$USAGE"
fi
# All debug output is printed to the logs
echo "DEBUG: $*"
}