travis_gradle_build.sh

#!/usr/bin/env bash

# Abort on error, uninitialized variables and pipe errors
set -eEu
set -o pipefail
set -v

WORKDIR="$( cd "$( dirname "${BASH_SOURCE[0]}" )" && pwd )"
export WORKDIR
export PING_SLEEP=30s
export BUILD_OUTPUT=$WORKDIR/build.out
export TEST_PROC_LOG_OUTPUT=$WORKDIR/test-proc.out
export TEST_API_LOG_OUTPUT=$WORKDIR/test-api.out

# dump the last N lines of the output files
DUMP_LINES_BUILD=2000
DUMP_LINES_TEST_PROC=5000
DUMP_LINES_TEST_API=2000

touch "$BUILD_OUTPUT"
touch "$TEST_PROC_LOG_OUTPUT"
touch "$TEST_API_LOG_OUTPUT"

# Helper functions
print_log_separator() {
  echo "----------------------------------------------------------------"
  echo "-"
  echo "-"
  echo "-"
  echo "-"
  echo "----------------------------------------------------------------"
}

dump_output() {
  if [ "$2" -eq "-1" ]; then
    echo "Printing all the output: $1"
    cat "$1"
  else
    echo "Tailing the last $2 lines of build output: $1"
    tail -$2 "$1"
  fi
}

print_logs() {
  print_log_separator
  dump_output "$BUILD_OUTPUT" $DUMP_LINES_BUILD

  print_log_separator
  dump_output "$TEST_PROC_LOG_OUTPUT" $DUMP_LINES_TEST_PROC

  print_log_separator
  dump_output "$TEST_API_LOG_OUTPUT" $DUMP_LINES_TEST_API
}

run_build() {
  {
     #./gradlew build --full-stacktrace --debug 2>&1 | tee >(grep TestEventLogger | grep -P -n "[[:ascii:]]" >> $TEST_LOG_OUTPUT) | grep  -P -n "[[:ascii:]]" >> $BUILD_OUTPUT
    ./gradlew assemble --full-stacktrace 2>&1
  } >> "$BUILD_OUTPUT"
}

run_tests() {
  {
    # enable debug output here to spot the errors
    ./gradlew test --full-stacktrace --debug --tests=tika.LegacyTikaProcessorTests 2>&1 | grep "TestEventLogger"
    ./gradlew test --full-stacktrace --debug --tests=tika.CompositeTikaProcessorTests 2>&1 | grep "TestEventLogger"
    # disable debug output for service
    ./gradlew test --full-stacktrace --tests=ServiceControllerTests 2>&1
  } >> "$TEST_PROC_LOG_OUTPUT"
  {
    # disable debug output for docs
    ./gradlew test --full-stacktrace --tests=ServiceControllerDocumentMultipartFileTests 2>&1
    ./gradlew test --full-stacktrace --tests=ServiceControllerDocumentStreamTests 2>&1
  } >> "$TEST_API_LOG_OUTPUT"
}

error_handler() {
  echo ERROR: An error was encountered with the build.
  print_logs
  exit 1
}

# If an error occurs, run our error handler to output a tail of the build
trap 'error_handler' ERR SIGPIPE

# Set up a repeating loop to send some output to Travis (to avoid killing inactive builds)
bash -c "while true; do echo \$(date) - building ...; sleep $PING_SLEEP; done" &
PING_LOOP_PID=$!

# Build Commands
run_build
run_tests

# 'nicely' terminate the ping output loop
kill $PING_LOOP_PID

# Print the logs
echo SUCCESS
print_logs