Travis CI: Upload the logs from failed jobs to transfer.sh

When a non-lint job fails, all the relevant logs from the test runner
will be gzipped and uploaded to https://transfer.sh file sharing
service. The download link will then be displayed at the very end of the
Travis build log.

Reviewed-By: Jan Cholasta <jcholast@redhat.com>

.test_runner_config.yaml

@@ -31,6 +31,16 @@ steps:
   - dnf builddep -y ${builddep_opts} --spec freeipa.spec.in --best --allowerasing
   cleanup:
   - chown -R ${uid}:${gid} ${container_working_dir}
+  - journalctl -b --no-pager > systemd_journal.log
+  - >
+      tar --ignore-failed-read -cvf ${container_working_dir}/var_log.tar
+      /var/log/dirsrv
+      /var/log/httpd
+      /var/log/ipa*
+      /var/log/krb5kdc.log
+      /var/log/pki
+      systemd_journal.log
+  - chown ${uid}:${gid} ${container_working_dir}/var_log.tar
   configure:
   - ./autogen.sh
   install_packages:

.travis.yml

@@ -12,6 +12,8 @@ env:
           PEP8_ERROR_LOG="pep8_errors.log"
           CI_RESULTS_LOG="ci_results_${TRAVIS_BRANCH}.log"
           CI_BACKLOG_SIZE=5000
+          CI_RUNNER_LOGS_DIR="/tmp/test-runner-logs"
+          CI_RUNNER_LOG_ARCHIVE="freeipa-ci-pr-${TRAVIS_PULL_REQUEST}-job-${TRAVIS_JOB_NUMBER}.tar.gz"
     matrix:
         - TASK_TO_RUN="lint"
         - TASK_TO_RUN="run-tests"
@@ -31,7 +33,22 @@ install:
       git+https://github.com/freeipa/ipa-docker-test-runner@release-0-2-1
 
 script:
+    - mkdir -p $CI_RUNNER_LOGS_DIR
     - travis_wait 50 ./.travis_run_task.sh
 after_failure:
     - echo "Test runner output:"; tail -n $CI_BACKLOG_SIZE $CI_RESULTS_LOG
     - echo "PEP-8 errors:"; cat $PEP8_ERROR_LOG
+    - >
+      echo "Archiving CI logs";
+      if [[ "$TASK_TO_RUN" != "lint" ]]; then
+          tar --ignore-failed-read -uvf var_log.tar $CI_RESULTS_LOG $PEP8_ERROR_LOG;
+          gzip var_log.tar;
+          mv var_log.tar.gz $CI_RUNNER_LOG_ARCHIVE;
+
+          transfer_url=$(
+            curl --upload-file \
+            ./$CI_RUNNER_LOG_ARCHIVE \
+            https://transfer.sh/${CI_RUNNER_LOG_ARCHIVE}) &&
+            echo "Download log archive from ${transfer_url}" ||
+            echo "Failed to upload log archive!";
+       fi