resources/libraries/bash/function/common.sh

   1 # Copyright (c) 2023 Cisco and/or its affiliates.
   2 # Copyright (c) 2023 PANTHEON.tech and/or its affiliates.
   3 # Licensed under the Apache License, Version 2.0 (the "License");
   4 # you may not use this file except in compliance with the License.
   5 # You may obtain a copy of the License at:
   6 #
   7 #     http://www.apache.org/licenses/LICENSE-2.0
   8 #
   9 # Unless required by applicable law or agreed to in writing, software
  10 # distributed under the License is distributed on an "AS IS" BASIS,
  11 # WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
  12 # See the License for the specific language governing permissions and
  13 # limitations under the License.
  14
  15 set -exuo pipefail
  16
  17 # This library defines functions used by multiple entry scripts.
  18 # Keep functions ordered alphabetically, please.
  19
  20 # TODO: Add a link to bash style guide.
  21 # TODO: Consider putting every die into a {} block,
  22 #   the code might become more readable (but longer).
  23
  24
  25 function activate_docker_topology () {
  26
  27     # Create virtual vpp-device topology. Output of the function is topology
  28     # file describing created environment saved to a file.
  29     #
  30     # Variables read:
  31     # - BASH_FUNCTION_DIR - Path to existing directory this file is located in.
  32     # - TOPOLOGIES - Available topologies.
  33     # - NODENESS - Node multiplicity of desired testbed.
  34     # - FLAVOR - Node flavor string, usually describing the processor.
  35     # - IMAGE_VER_FILE - Name of file that contains the image version.
  36     # - CSIT_DIR - Directory where ${IMAGE_VER_FILE} is located.
  37     # Variables set:
  38     # - WORKING_TOPOLOGY - Path to topology file.
  39
  40     set -exuo pipefail
  41
  42     source "${BASH_FUNCTION_DIR}/device.sh" || {
  43         die "Source failed!"
  44     }
  45     device_image="$(< ${CSIT_DIR}/${IMAGE_VER_FILE})"
  46     case_text="${NODENESS}_${FLAVOR}"
  47     case "${case_text}" in
  48         "1n_skx" | "1n_tx2")
  49             # We execute reservation over csit-shim-dcr (ssh) which runs sourced
  50             # script's functions. Env variables are read from ssh output
  51             # back to localhost for further processing.
  52             # Shim and Jenkins executor are in the same network on the same host
  53             # Connect to docker's default gateway IP and shim's exposed port
  54             ssh="ssh root@172.17.0.1 -p 6022"
  55             run="activate_wrapper ${NODENESS} ${FLAVOR} ${device_image}"
  56             # The "declare -f" output is long and boring.
  57             set +x
  58             # backtics to avoid https://midnight-commander.org/ticket/2142
  59             env_vars=`${ssh} "$(declare -f); ${run}"` || {
  60                 die "Topology reservation via shim-dcr failed!"
  61             }
  62             set -x
  63             set -a
  64             source <(echo "$env_vars" | grep -v /usr/bin/docker) || {
  65                 die "Source failed!"
  66             }
  67             set +a
  68             ;;
  69         "1n_vbox")
  70             # We execute reservation on localhost. Sourced script automatially
  71             # sets environment variables for further processing.
  72             activate_wrapper "${NODENESS}" "${FLAVOR}" "${device_image}" || die
  73             ;;
  74         *)
  75             die "Unknown specification: ${case_text}!"
  76     esac
  77
  78     trap 'deactivate_docker_topology' EXIT || {
  79          die "Trap attempt failed, please cleanup manually. Aborting!"
  80     }
  81
  82     parse_env_variables || die "Parse of environment variables failed!"
  83
  84     # Replace all variables in template with those in environment.
  85     source <(echo 'cat <<EOF >topo.yml'; cat ${TOPOLOGIES[0]}; echo EOF;) || {
  86         die "Topology file create failed!"
  87     }
  88
  89     WORKING_TOPOLOGY="${CSIT_DIR}/topologies/available/vpp_device.yaml"
  90     mv topo.yml "${WORKING_TOPOLOGY}" || {
  91         die "Topology move failed!"
  92     }
  93     cat ${WORKING_TOPOLOGY} | grep -v password || {
  94         die "Topology read failed!"
  95     }
  96 }
  97
  98
  99 function activate_virtualenv () {
 100
 101     # Update virtualenv pip package, delete and create virtualenv directory,
 102     # activate the virtualenv, install requirements, set PYTHONPATH.
 103
 104     # Arguments:
 105     # - ${1} - Path to existing directory for creating virtualenv in.
 106     #          If missing or empty, ${CSIT_DIR} is used.
 107     # - ${2} - Path to requirements file, ${CSIT_DIR}/requirements.txt if empty.
 108     # Variables read:
 109     # - CSIT_DIR - Path to existing root of local CSIT git repository.
 110     # Variables exported:
 111     # - PYTHONPATH - CSIT_DIR, as CSIT Python scripts usually need this.
 112     # Functions called:
 113     # - die - Print to stderr and exit.
 114
 115     set -exuo pipefail
 116
 117     root_path="${1-$CSIT_DIR}"
 118     env_dir="${root_path}/env"
 119     req_path=${2-$CSIT_DIR/requirements.txt}
 120     rm -rf "${env_dir}" || die "Failed to clean previous virtualenv."
 121     pip3 install virtualenv==20.15.1 || {
 122         die "Virtualenv package install failed."
 123     }
 124     virtualenv --no-download --python=$(which python3) "${env_dir}" || {
 125         die "Virtualenv creation for $(which python3) failed."
 126     }
 127     set +u
 128     source "${env_dir}/bin/activate" || die "Virtualenv activation failed."
 129     set -u
 130     pip3 install -r "${req_path}" || {
 131         die "Requirements installation failed."
 132     }
 133     # Most CSIT Python scripts assume PYTHONPATH is set and exported.
 134     export PYTHONPATH="${CSIT_DIR}" || die "Export failed."
 135 }
 136
 137
 138 function archive_tests () {
 139
 140     # Create .tar.gz of generated/tests for archiving.
 141     # To be run after generate_tests, kept separate to offer more flexibility.
 142
 143     # Directory read:
 144     # - ${GENERATED_DIR}/tests - Tree of executed suites to archive.
 145     # File rewriten:
 146     # - ${ARCHIVE_DIR}/generated_tests.tar.gz - Archive of generated tests.
 147
 148     set -exuo pipefail
 149
 150     pushd "${ARCHIVE_DIR}" || die
 151     tar czf "generated_tests.tar.gz" "${GENERATED_DIR}/tests" || true
 152     popd || die
 153 }
 154
 155
 156 function check_download_dir () {
 157
 158     # Fail if there are no files visible in ${DOWNLOAD_DIR}.
 159     #
 160     # Variables read:
 161     # - DOWNLOAD_DIR - Path to directory robot takes the build to test from.
 162     # Directories read:
 163     # - ${DOWNLOAD_DIR} - Has to be non-empty to proceed.
 164     # Functions called:
 165     # - die - Print to stderr and exit.
 166
 167     set -exuo pipefail
 168
 169     if [[ ! "$(ls -A "${DOWNLOAD_DIR}")" ]]; then
 170         die "No artifacts downloaded!"
 171     fi
 172 }
 173
 174
 175 function check_prerequisites () {
 176
 177     # Fail if prerequisites are not met.
 178     #
 179     # Functions called:
 180     # - installed - Check if application is installed/present in system.
 181     # - die - Print to stderr and exit.
 182
 183     set -exuo pipefail
 184
 185     if ! installed sshpass; then
 186         die "Please install sshpass before continue!"
 187     fi
 188 }
 189
 190
 191 function common_dirs () {
 192
 193     # Set global variables, create some directories (without touching content).
 194
 195     # Variables set:
 196     # - BASH_FUNCTION_DIR - Path to existing directory this file is located in.
 197     # - CSIT_DIR - Path to existing root of local CSIT git repository.
 198     # - TOPOLOGIES_DIR - Path to existing directory with available topologies.
 199     # - JOB_SPECS_DIR - Path to existing directory with job test specifications.
 200     # - RESOURCES_DIR - Path to existing CSIT subdirectory "resources".
 201     # - TOOLS_DIR - Path to existing resources subdirectory "tools".
 202     # - PYTHON_SCRIPTS_DIR - Path to existing tools subdirectory "scripts".
 203     # - ARCHIVE_DIR - Path to created CSIT subdirectory "archives".
 204     #   The name is chosen to match what ci-management expects.
 205     # - DOWNLOAD_DIR - Path to created CSIT subdirectory "download_dir".
 206     # - GENERATED_DIR - Path to created CSIT subdirectory "generated".
 207     # Directories created if not present:
 208     # ARCHIVE_DIR, DOWNLOAD_DIR, GENERATED_DIR.
 209     # Functions called:
 210     # - die - Print to stderr and exit.
 211
 212     set -exuo pipefail
 213
 214     this_file=$(readlink -e "${BASH_SOURCE[0]}") || {
 215         die "Some error during locating of this source file."
 216     }
 217     BASH_FUNCTION_DIR=$(dirname "${this_file}") || {
 218         die "Some error during dirname call."
 219     }
 220     # Current working directory could be in a different repo, e.g. VPP.
 221     pushd "${BASH_FUNCTION_DIR}" || die "Pushd failed"
 222     relative_csit_dir=$(git rev-parse --show-toplevel) || {
 223         die "Git rev-parse failed."
 224     }
 225     CSIT_DIR=$(readlink -e "${relative_csit_dir}") || die "Readlink failed."
 226     popd || die "Popd failed."
 227     TOPOLOGIES_DIR=$(readlink -e "${CSIT_DIR}/topologies/available") || {
 228         die "Readlink failed."
 229     }
 230     JOB_SPECS_DIR=$(readlink -e "${CSIT_DIR}/resources/job_specs") || {
 231         die "Readlink failed."
 232     }
 233     RESOURCES_DIR=$(readlink -e "${CSIT_DIR}/resources") || {
 234         die "Readlink failed."
 235     }
 236     TOOLS_DIR=$(readlink -e "${RESOURCES_DIR}/tools") || {
 237         die "Readlink failed."
 238     }
 239     PYTHON_SCRIPTS_DIR=$(readlink -e "${TOOLS_DIR}/scripts") || {
 240         die "Readlink failed."
 241     }
 242
 243     ARCHIVE_DIR=$(readlink -f "${CSIT_DIR}/archives") || {
 244         die "Readlink failed."
 245     }
 246     mkdir -p "${ARCHIVE_DIR}" || die "Mkdir failed."
 247     DOWNLOAD_DIR=$(readlink -f "${CSIT_DIR}/download_dir") || {
 248         die "Readlink failed."
 249     }
 250     mkdir -p "${DOWNLOAD_DIR}" || die "Mkdir failed."
 251     GENERATED_DIR=$(readlink -f "${CSIT_DIR}/generated") || {
 252         die "Readlink failed."
 253     }
 254     mkdir -p "${GENERATED_DIR}" || die "Mkdir failed."
 255 }
 256
 257
 258 function compose_robot_arguments () {
 259
 260     # Variables read:
 261     # - WORKING_TOPOLOGY - Path to topology yaml file of the reserved testbed.
 262     # - DUT - CSIT test/ subdirectory, set while processing tags.
 263     # - TAGS - Array variable holding selected tag boolean expressions.
 264     # - TOPOLOGIES_TAGS - Tag boolean expression filtering tests for topology.
 265     # - TEST_CODE - The test selection string from environment or argument.
 266     # - SELECTION_MODE - Selection criteria [test, suite, include, exclude].
 267     # Variables set:
 268     # - ROBOT_ARGS - String holding part of all arguments for robot.
 269     # - EXPANDED_TAGS - Array of strings robot arguments compiled from tags.
 270
 271     set -exuo pipefail
 272
 273     # No explicit check needed with "set -u".
 274     ROBOT_ARGS=("--loglevel" "TRACE")
 275     ROBOT_ARGS+=("--variable" "TOPOLOGY_PATH:${WORKING_TOPOLOGY}")
 276
 277     case "${TEST_CODE}" in
 278         *"device"*)
 279             ROBOT_ARGS+=("--suite" "tests.${DUT}.device")
 280             ;;
 281         *"perf"*)
 282             ROBOT_ARGS+=("--suite" "tests.${DUT}.perf")
 283             ;;
 284         *)
 285             die "Unknown specification: ${TEST_CODE}"
 286     esac
 287
 288     EXPANDED_TAGS=()
 289     for tag in "${TAGS[@]}"; do
 290         if [[ ${tag} == "!"* ]]; then
 291             EXPANDED_TAGS+=("--exclude" "${tag#$"!"}")
 292         else
 293             if [[ ${SELECTION_MODE} == "--test" ]]; then
 294                 EXPANDED_TAGS+=("--test" "${tag}")
 295             else
 296                 EXPANDED_TAGS+=("--include" "${TOPOLOGIES_TAGS}AND${tag}")
 297             fi
 298         fi
 299     done
 300
 301     if [[ ${SELECTION_MODE} == "--test" ]]; then
 302         EXPANDED_TAGS+=("--include" "${TOPOLOGIES_TAGS}")
 303     fi
 304 }
 305
 306
 307 function deactivate_docker_topology () {
 308
 309     # Deactivate virtual vpp-device topology by removing containers.
 310     #
 311     # Variables read:
 312     # - NODENESS - Node multiplicity of desired testbed.
 313     # - FLAVOR - Node flavor string, usually describing the processor.
 314
 315     set -exuo pipefail
 316
 317     case_text="${NODENESS}_${FLAVOR}"
 318     case "${case_text}" in
 319         "1n_skx" | "1n_tx2")
 320             ssh="ssh root@172.17.0.1 -p 6022"
 321             env_vars=$(env | grep CSIT_ | tr '\n' ' ' ) || die
 322             # The "declare -f" output is long and boring.
 323             set +x
 324             ${ssh} "$(declare -f); deactivate_wrapper ${env_vars}" || {
 325                 die "Topology cleanup via shim-dcr failed!"
 326             }
 327             set -x
 328             ;;
 329         "1n_vbox")
 330             enter_mutex || die
 331             clean_environment || {
 332                 die "Topology cleanup locally failed!"
 333             }
 334             exit_mutex || die
 335             ;;
 336         *)
 337             die "Unknown specification: ${case_text}!"
 338     esac
 339 }
 340
 341
 342 function die () {
 343
 344     # Print the message to standard error end exit with error code specified
 345     # by the second argument.
 346     #
 347     # Hardcoded values:
 348     # - The default error message.
 349     # Arguments:
 350     # - ${1} - The whole error message, be sure to quote. Optional
 351     # - ${2} - the code to exit with, default: 1.
 352
 353     set -x
 354     set +eu
 355     warn "${1:-Unspecified run-time error occurred!}"
 356     exit "${2:-1}"
 357 }
 358
 359
 360 function die_on_robot_error () {
 361
 362     # Source this fragment if you want to abort on any failed test case.
 363     #
 364     # Variables read:
 365     # - ROBOT_EXIT_STATUS - Set by a robot running fragment.
 366     # Functions called:
 367     # - die - Print to stderr and exit.
 368
 369     set -exuo pipefail
 370
 371     if [[ "${ROBOT_EXIT_STATUS}" != "0" ]]; then
 372         die "Test failures are present!" "${ROBOT_EXIT_STATUS}"
 373     fi
 374 }
 375
 376
 377 function generate_tests () {
 378
 379     # Populate ${GENERATED_DIR}/tests based on ${CSIT_DIR}/tests/.
 380     # Any previously existing content of ${GENERATED_DIR}/tests is wiped before.
 381     # The generation is done by executing any *.py executable
 382     # within any subdirectory after copying.
 383
 384     # This is a separate function, because this code is called
 385     # both by autogen checker and entries calling run_robot.
 386
 387     # Directories read:
 388     # - ${CSIT_DIR}/tests - Used as templates for the generated tests.
 389     # Directories replaced:
 390     # - ${GENERATED_DIR}/tests - Overwritten by the generated tests.
 391
 392     set -exuo pipefail
 393
 394     rm -rf "${GENERATED_DIR}/tests" || die
 395     cp -r "${CSIT_DIR}/tests" "${GENERATED_DIR}/tests" || die
 396     cmd_line=("find" "${GENERATED_DIR}/tests" "-type" "f")
 397     cmd_line+=("-executable" "-name" "*.py")
 398     # We sort the directories, so log output can be compared between runs.
 399     file_list=$("${cmd_line[@]}" | sort) || die
 400
 401     for gen in ${file_list}; do
 402         directory="$(dirname "${gen}")" || die
 403         filename="$(basename "${gen}")" || die
 404         pushd "${directory}" || die
 405         ./"${filename}" || die
 406         popd || die
 407     done
 408 }
 409
 410
 411 function get_test_code () {
 412
 413     # Arguments:
 414     # - ${1} - Optional, argument of entry script (or empty as unset).
 415     #   Test code value to override job name from environment.
 416     # Variables read:
 417     # - JOB_NAME - String affecting test selection, default if not argument.
 418     # Variables set:
 419     # - TEST_CODE - The test selection string from environment or argument.
 420     # - NODENESS - Node multiplicity of desired testbed.
 421     # - FLAVOR - Node flavor string, usually describing the processor.
 422
 423     set -exuo pipefail
 424
 425     TEST_CODE="${1-}" || die "Reading optional argument failed, somehow."
 426     if [[ -z "${TEST_CODE}" ]]; then
 427         TEST_CODE="${JOB_NAME-}" || die "Reading job name failed, somehow."
 428     fi
 429
 430     case "${TEST_CODE}" in
 431         *"1n-vbox"*)
 432             NODENESS="1n"
 433             FLAVOR="vbox"
 434             ;;
 435         *"1n-skx"*)
 436             NODENESS="1n"
 437             FLAVOR="skx"
 438             ;;
 439         *"1n-tx2"*)
 440             NODENESS="1n"
 441             FLAVOR="tx2"
 442             ;;
 443         *"1n-aws"*)
 444             NODENESS="1n"
 445             FLAVOR="aws"
 446             ;;
 447         *"2n-aws"*)
 448             NODENESS="2n"
 449             FLAVOR="aws"
 450             ;;
 451         *"3n-aws"*)
 452             NODENESS="3n"
 453             FLAVOR="aws"
 454             ;;
 455         *"1n-c6gn"*)
 456             NODENESS="1n"
 457             FLAVOR="c6gn"
 458             ;;
 459         *"2n-c6gn"*)
 460             NODENESS="2n"
 461             FLAVOR="c6gn"
 462             ;;
 463         *"3n-c6gn"*)
 464             NODENESS="3n"
 465             FLAVOR="c6gn"
 466             ;;
 467         *"1n-c6in"*)
 468             NODENESS="1n"
 469             FLAVOR="c6in"
 470             ;;
 471         *"2n-c6in"*)
 472             NODENESS="2n"
 473             FLAVOR="c6in"
 474             ;;
 475         *"3n-c6in"*)
 476             NODENESS="3n"
 477             FLAVOR="c6in"
 478             ;;
 479         *"2n-zn2"*)
 480             NODENESS="2n"
 481             FLAVOR="zn2"
 482             ;;
 483         *"2n-clx"*)
 484             NODENESS="2n"
 485             FLAVOR="clx"
 486             ;;
 487         *"2n-icx"*)
 488             NODENESS="2n"
 489             FLAVOR="icx"
 490             ;;
 491         *"2n-spr"*)
 492             NODENESS="2n"
 493             FLAVOR="spr"
 494             ;;
 495         *"3n-icx"*)
 496             NODENESS="3n"
 497             FLAVOR="icx"
 498             ;;
 499         *"3na-spr"*)
 500             NODENESS="3na"
 501             FLAVOR="spr"
 502             ;;
 503         *"3nb-spr"*)
 504             NODENESS="3nb"
 505             FLAVOR="spr"
 506             ;;
 507         *"3n-snr"*)
 508             NODENESS="3n"
 509             FLAVOR="snr"
 510             ;;
 511         *"2n-tx2"*)
 512             NODENESS="2n"
 513             FLAVOR="tx2"
 514             ;;
 515         *"3n-tsh"*)
 516             NODENESS="3n"
 517             FLAVOR="tsh"
 518             ;;
 519         *"3n-alt"*)
 520             NODENESS="3n"
 521             FLAVOR="alt"
 522             ;;
 523     esac
 524 }
 525
 526
 527 function get_test_tag_string () {
 528
 529     # Variables read:
 530     # - GERRIT_EVENT_TYPE - Event type set by gerrit, can be unset.
 531     # - GERRIT_EVENT_COMMENT_TEXT - Comment text, read for "comment-added" type.
 532     # - TEST_CODE - The test selection string from environment or argument.
 533     # Variables set:
 534     # - TEST_TAG_STRING - The string following trigger word in gerrit comment.
 535     #   May be empty, or even not set on event types not adding comment.
 536     # Variables exported optionally:
 537     # - GRAPH_NODE_VARIANT - Node variant to test with, set if found in trigger.
 538
 539     # TODO: ci-management scripts no longer need to perform this.
 540
 541     set -exuo pipefail
 542
 543     if [[ "${GERRIT_EVENT_TYPE-}" == "comment-added" ]]; then
 544         case "${TEST_CODE}" in
 545             *"device"*)
 546                 trigger="devicetest"
 547                 ;;
 548             *"perf"*)
 549                 trigger="perftest"
 550                 ;;
 551             *)
 552                 die "Unknown specification: ${TEST_CODE}"
 553         esac
 554         # Ignore lines not containing the trigger word.
 555         comment=$(fgrep "${trigger}" <<< "${GERRIT_EVENT_COMMENT_TEXT}" || true)
 556         # The vpp-csit triggers trail stuff we are not interested in.
 557         # Removing them and trigger word: https://unix.stackexchange.com/a/13472
 558         # (except relying on \s whitespace, \S non-whitespace and . both).
 559         # The last string is concatenated, only the middle part is expanded.
 560         cmd=("grep" "-oP" '\S*'"${trigger}"'\S*\s\K.+$') || die "Unset trigger?"
 561         # On parsing error, TEST_TAG_STRING probably stays empty.
 562         TEST_TAG_STRING=$("${cmd[@]}" <<< "${comment}" || true)
 563         if [[ -z "${TEST_TAG_STRING-}" ]]; then
 564             # Probably we got a base64 encoded comment.
 565             comment="${GERRIT_EVENT_COMMENT_TEXT}"
 566             comment=$(base64 --decode <<< "${comment}" || true)
 567             comment=$(fgrep "${trigger}" <<< "${comment}" || true)
 568             TEST_TAG_STRING=$("${cmd[@]}" <<< "${comment}" || true)
 569         fi
 570         if [[ -n "${TEST_TAG_STRING-}" ]]; then
 571             test_tag_array=(${TEST_TAG_STRING})
 572             if [[ "${test_tag_array[0]}" == "icl" ]]; then
 573                 export GRAPH_NODE_VARIANT="icl"
 574                 TEST_TAG_STRING="${test_tag_array[@]:1}" || true
 575             elif [[ "${test_tag_array[0]}" == "skx" ]]; then
 576                 export GRAPH_NODE_VARIANT="skx"
 577                 TEST_TAG_STRING="${test_tag_array[@]:1}" || true
 578             fi
 579         fi
 580     fi
 581 }
 582
 583
 584 function installed () {
 585
 586     # Check if the given utility is installed. Fail if not installed.
 587     #
 588     # Duplicate of common.sh function, as this file is also used standalone.
 589     #
 590     # Arguments:
 591     # - ${1} - Utility to check.
 592     # Returns:
 593     # - 0 - If command is installed.
 594     # - 1 - If command is not installed.
 595
 596     set -exuo pipefail
 597
 598     command -v "${1}"
 599 }
 600
 601
 602 function move_archives () {
 603
 604     # Move archive directory to top of workspace, if not already there.
 605     #
 606     # ARCHIVE_DIR is positioned relative to CSIT_DIR,
 607     # but in some jobs CSIT_DIR is not same as WORKSPACE
 608     # (e.g. under VPP_DIR). To simplify ci-management settings,
 609     # we want to move the data to the top. We do not want simple copy,
 610     # as ci-management is eager with recursive search.
 611     #
 612     # As some scripts may call this function multiple times,
 613     # the actual implementation use copying and deletion,
 614     # so the workspace gets "union" of contents (except overwrites on conflict).
 615     # The consequence is empty ARCHIVE_DIR remaining after this call.
 616     #
 617     # As the source directory is emptied,
 618     # the check for dirs being different is essential.
 619     #
 620     # Variables read:
 621     # - WORKSPACE - Jenkins workspace, move only if the value is not empty.
 622     #   Can be unset, then it speeds up manual testing.
 623     # - ARCHIVE_DIR - Path to directory with content to be moved.
 624     # Directories updated:
 625     # - ${WORKSPACE}/archives/ - Created if does not exist.
 626     #   Content of ${ARCHIVE_DIR}/ is moved.
 627     # Functions called:
 628     # - die - Print to stderr and exit.
 629
 630     set -exuo pipefail
 631
 632     if [[ -n "${WORKSPACE-}" ]]; then
 633         target=$(readlink -f "${WORKSPACE}/archives")
 634         if [[ "${target}" != "${ARCHIVE_DIR}" ]]; then
 635             mkdir -p "${target}" || die "Archives dir create failed."
 636             cp -rf "${ARCHIVE_DIR}"/* "${target}" || die "Copy failed."
 637             rm -rf "${ARCHIVE_DIR}"/* || die "Delete failed."
 638         fi
 639     fi
 640 }
 641
 642
 643 function prepare_topology () {
 644
 645     # Prepare virtual testbed topology if needed based on flavor.
 646
 647     # Variables read:
 648     # - TEST_CODE - String affecting test selection, usually jenkins job name.
 649     # - NODENESS - Node multiplicity of testbed, either "2n" or "3n".
 650     # - FLAVOR - Node flavor string, e.g. "clx" or "skx".
 651     # Variables set:
 652     # - TERRAFORM_MODULE_DIR - Terraform module directory.
 653     # Functions called:
 654     # - die - Print to stderr and exit.
 655     # - terraform_init - Terraform init topology.
 656     # - terraform_apply - Terraform apply topology.
 657
 658     set -exuo pipefail
 659
 660     case_text="${NODENESS}_${FLAVOR}"
 661     case "${case_text}" in
 662         "1n_aws" | "2n_aws" | "3n_aws")
 663             export TF_VAR_testbed_name="${TEST_CODE}"
 664             TERRAFORM_MODULE_DIR="terraform-aws-${NODENESS}-${FLAVOR}-c5n"
 665             terraform_init || die "Failed to call terraform init."
 666             trap "terraform_destroy" ERR EXIT || {
 667                 die "Trap attempt failed, please cleanup manually. Aborting!"
 668             }
 669             terraform_apply || die "Failed to call terraform apply."
 670             ;;
 671         "1n_c6gn" | "2n_c6gn" | "3n_c6gn")
 672             export TF_VAR_testbed_name="${TEST_CODE}"
 673             TERRAFORM_MODULE_DIR="terraform-aws-${NODENESS}-c6gn"
 674             terraform_init || die "Failed to call terraform init."
 675             trap "terraform_destroy" ERR EXIT || {
 676                 die "Trap attempt failed, please cleanup manually. Aborting!"
 677             }
 678             terraform_apply || die "Failed to call terraform apply."
 679             ;;
 680         "1n_c6in" | "2n_c6in" | "3n_c6in")
 681             export TF_VAR_testbed_name="${TEST_CODE}"
 682             TERRAFORM_MODULE_DIR="terraform-aws-${NODENESS}-c6in"
 683             terraform_init || die "Failed to call terraform init."
 684             trap "terraform_destroy" ERR EXIT || {
 685                 die "Trap attempt failed, please cleanup manually. Aborting!"
 686             }
 687             terraform_apply || die "Failed to call terraform apply."
 688             ;;
 689     esac
 690 }
 691
 692
 693 function reserve_and_cleanup_testbed () {
 694
 695     # Reserve physical testbed, perform cleanup, register trap to unreserve.
 696     # When cleanup fails, remove from topologies and keep retrying
 697     # until all topologies are removed.
 698     #
 699     # Variables read:
 700     # - TOPOLOGIES - Array of paths to topology yaml to attempt reservation on.
 701     # - PYTHON_SCRIPTS_DIR - Path to directory holding the reservation script.
 702     # - BUILD_TAG - Any string suitable as filename, identifying
 703     #   test run executing this function. May be unset.
 704     # Variables set:
 705     # - TOPOLOGIES - Array of paths to topologies, with failed cleanups removed.
 706     # - WORKING_TOPOLOGY - Path to topology yaml file of the reserved testbed.
 707     # Functions called:
 708     # - die - Print to stderr and exit.
 709     # - ansible_playbook - Perform an action using ansible, see ansible.sh
 710     # Traps registered:
 711     # - EXIT - Calls cancel_all for ${WORKING_TOPOLOGY}.
 712
 713     set -exuo pipefail
 714
 715     while true; do
 716         for topo in "${TOPOLOGIES[@]}"; do
 717             set +e
 718             scrpt="${PYTHON_SCRIPTS_DIR}/topo_reservation.py"
 719             opts=("-t" "${topo}" "-r" "${BUILD_TAG:-Unknown}")
 720             python3 "${scrpt}" "${opts[@]}"
 721             result="$?"
 722             set -e
 723             if [[ "${result}" == "0" ]]; then
 724                 # Trap unreservation before cleanup check,
 725                 # so multiple jobs showing failed cleanup improve chances
 726                 # of humans to notice and fix.
 727                 WORKING_TOPOLOGY="${topo}"
 728                 echo "Reserved: ${WORKING_TOPOLOGY}"
 729                 trap "untrap_and_unreserve_testbed" EXIT || {
 730                     message="TRAP ATTEMPT AND UNRESERVE FAILED, FIX MANUALLY."
 731                     untrap_and_unreserve_testbed "${message}" || {
 732                         die "Teardown should have died, not failed."
 733                     }
 734                     die "Trap attempt failed, unreserve succeeded. Aborting."
 735                 }
 736                 # Cleanup + calibration checks
 737                 set +e
 738                 ansible_playbook "cleanup, calibration"
 739                 result="$?"
 740                 set -e
 741                 if [[ "${result}" == "0" ]]; then
 742                     break
 743                 fi
 744                 warn "Testbed cleanup failed: ${topo}"
 745                 untrap_and_unreserve_testbed "Fail of unreserve after cleanup."
 746             fi
 747             # Else testbed is accessible but currently reserved, moving on.
 748         done
 749
 750         if [[ -n "${WORKING_TOPOLOGY-}" ]]; then
 751             # Exit the infinite while loop if we made a reservation.
 752             warn "Reservation and cleanup successful."
 753             break
 754         fi
 755
 756         if [[ "${#TOPOLOGIES[@]}" == "0" ]]; then
 757             die "Run out of operational testbeds!"
 758         fi
 759
 760         # Wait ~3minutes before next try.
 761         sleep_time="$[ ( ${RANDOM} % 20 ) + 180 ]s" || {
 762             die "Sleep time calculation failed."
 763         }
 764         echo "Sleeping ${sleep_time}"
 765         sleep "${sleep_time}" || die "Sleep failed."
 766     done
 767 }
 768
 769
 770 function run_robot () {
 771
 772     # Run robot with options based on input variables.
 773     #
 774     # Variables read:
 775     # - CSIT_DIR - Path to existing root of local CSIT git repository.
 776     # - ARCHIVE_DIR - Path to store robot result files in.
 777     # - ROBOT_ARGS, EXPANDED_TAGS - See compose_robot_arguments.sh
 778     # - GENERATED_DIR - Tests are assumed to be generated under there.
 779     # Variables set:
 780     # - ROBOT_EXIT_STATUS - Exit status of most recent robot invocation.
 781     # Functions called:
 782     # - die - Print to stderr and exit.
 783
 784     set -exuo pipefail
 785
 786     all_options=("--outputdir" "${ARCHIVE_DIR}" "${ROBOT_ARGS[@]}")
 787     all_options+=("${EXPANDED_TAGS[@]}")
 788
 789     pushd "${CSIT_DIR}" || die "Change directory operation failed."
 790     set +e
 791     robot "${all_options[@]}" "${GENERATED_DIR}/tests/"
 792     ROBOT_EXIT_STATUS="$?"
 793     set -e
 794
 795     popd || die "Change directory operation failed."
 796 }
 797
 798
 799 function select_arch_os () {
 800
 801     # Set variables affected by local CPU architecture and operating system.
 802     #
 803     # Variables set:
 804     # - VPP_VER_FILE - Name of file in CSIT dir containing vpp stable version.
 805     # - IMAGE_VER_FILE - Name of file in CSIT dir containing the image name.
 806     # - PKG_SUFFIX - Suffix of OS package file name, "rpm" or "deb."
 807
 808     set -exuo pipefail
 809
 810     source /etc/os-release || die "Get OS release failed."
 811
 812     case "${ID}" in
 813         "ubuntu"*)
 814             case "${VERSION}" in
 815                 *"LTS (Jammy Jellyfish)"*)
 816                     IMAGE_VER_FILE="VPP_DEVICE_IMAGE_UBUNTU_JAMMY"
 817                     VPP_VER_FILE="VPP_STABLE_VER_UBUNTU_JAMMY"
 818                     PKG_SUFFIX="deb"
 819                     ;;
 820                 *)
 821                     die "Unsupported Ubuntu version!"
 822                     ;;
 823             esac
 824             ;;
 825         *)
 826             die "Unsupported distro or OS!"
 827             ;;
 828     esac
 829
 830     arch=$(uname -m) || {
 831         die "Get CPU architecture failed."
 832     }
 833
 834     case "${arch}" in
 835         "aarch64")
 836             IMAGE_VER_FILE="${IMAGE_VER_FILE}_ARM"
 837             ;;
 838         *)
 839             ;;
 840     esac
 841 }
 842
 843
 844 function select_tags () {
 845
 846     # Variables read:
 847     # - WORKING_TOPOLOGY - Path to topology yaml file of the reserved testbed.
 848     # - TEST_CODE - String affecting test selection, usually jenkins job name.
 849     # - DUT - CSIT test/ subdirectory, set while processing tags.
 850     # - TEST_TAG_STRING - String selecting tags, from gerrit comment.
 851     #   Can be unset.
 852     # - TOPOLOGIES_DIR - Path to existing directory with available tpologies.
 853     # - BASH_FUNCTION_DIR - Directory with input files to process.
 854     # Variables set:
 855     # - TAGS - Array of processed tag boolean expressions.
 856     # - SELECTION_MODE - Selection criteria [test, suite, include, exclude].
 857
 858     set -exuo pipefail
 859
 860     # NIC SELECTION
 861     case "${TEST_CODE}" in
 862         *"1n-aws"* | *"1n-c6gn"* | *"1n-c6in"*)
 863             start_pattern='^  SUT:'
 864             ;;
 865         *)
 866             start_pattern='^  TG:'
 867             ;;
 868     esac
 869     end_pattern='^ \? \?[A-Za-z0-9]\+:'
 870     # Remove the sections from topology file
 871     sed_command="/${start_pattern}/,/${end_pattern}/d"
 872     # All topologies NICs
 873     available=$(sed "${sed_command}" "${TOPOLOGIES_DIR}"/* \
 874                 | grep -hoP "model: \K.*" | sort -u)
 875     # Selected topology NICs
 876     reserved=$(sed "${sed_command}" "${WORKING_TOPOLOGY}" \
 877                | grep -hoP "model: \K.*" | sort -u)
 878     # All topologies NICs - Selected topology NICs
 879     exclude_nics=($(comm -13 <(echo "${reserved}") <(echo "${available}"))) || {
 880         die "Computation of excluded NICs failed."
 881     }
 882
 883     # Select default NIC tag.
 884     case "${TEST_CODE}" in
 885         *"3n-snr"*)
 886             default_nic="nic_intel-e822cq"
 887             ;;
 888         *"3n-tsh"*)
 889             default_nic="nic_intel-x520-da2"
 890             ;;
 891         *"3n-icx"* | *"2n-icx"*)
 892             default_nic="nic_intel-e810cq"
 893             ;;
 894         *"3na-spr"*)
 895             default_nic="nic_mellanox-cx7veat"
 896             ;;
 897         *"3nb-spr"*)
 898             default_nic="nic_intel-e810cq"
 899             ;;
 900         *"2n-spr"*)
 901             default_nic="nic_intel-e810cq"
 902             ;;
 903         *"2n-clx"* | *"2n-zn2"*)
 904             default_nic="nic_intel-xxv710"
 905             ;;
 906         *"2n-tx2"* | *"3n-alt"*)
 907             default_nic="nic_intel-xl710"
 908             ;;
 909         *"1n-aws"* | *"2n-aws"* | *"3n-aws"*)
 910             default_nic="nic_amazon-nitro-50g"
 911             ;;
 912         *"1n-c6gn"* | *"2n-c6gn"* | *"3n-c6gn"*)
 913             default_nic="nic_amazon-nitro-100g"
 914             ;;
 915         *"1n-c6in"* | *"2n-c6in"* | *"3n-c6in"*)
 916             default_nic="nic_amazon-nitro-200g"
 917             ;;
 918         *)
 919             default_nic="nic_intel-x710"
 920             ;;
 921     esac
 922
 923     sed_nic_sub_cmd="sed s/\${default_nic}/${default_nic}/"
 924     awk_nics_sub_cmd=""
 925     awk_nics_sub_cmd+='gsub("xxv710","25ge2p1xxv710");'
 926     awk_nics_sub_cmd+='gsub("x710","10ge2p1x710");'
 927     awk_nics_sub_cmd+='gsub("xl710","40ge2p1xl710");'
 928     awk_nics_sub_cmd+='gsub("x520-da2","10ge2p1x520");'
 929     awk_nics_sub_cmd+='gsub("cx556a","100ge2p1cx556a");'
 930     awk_nics_sub_cmd+='gsub("cx7veat","200ge2p1cx7veat");'
 931     awk_nics_sub_cmd+='gsub("cx6dx","100ge2p1cx6dx");'
 932     awk_nics_sub_cmd+='gsub("e810cq","100ge2p1e810cq");'
 933     awk_nics_sub_cmd+='gsub("vic1227","10ge2p1vic1227");'
 934     awk_nics_sub_cmd+='gsub("vic1385","40ge2p1vic1385");'
 935     awk_nics_sub_cmd+='gsub("nitro-50g","50ge1p1ENA");'
 936     awk_nics_sub_cmd+='gsub("nitro-100g","100ge1p1ENA");'
 937     awk_nics_sub_cmd+='gsub("nitro-200g","200ge1p1ENA");'
 938     awk_nics_sub_cmd+='if ($9 =="drv_avf") drv="avf-";'
 939     awk_nics_sub_cmd+='else if ($9 =="drv_rdma_core") drv ="rdma-";'
 940     awk_nics_sub_cmd+='else if ($9 =="drv_mlx5_core") drv ="mlx5-";'
 941     awk_nics_sub_cmd+='else if ($9 =="drv_af_xdp") drv ="af-xdp-";'
 942     awk_nics_sub_cmd+='else drv="";'
 943     awk_nics_sub_cmd+='if ($1 =="-") cores="";'
 944     awk_nics_sub_cmd+='else cores=$1;'
 945     awk_nics_sub_cmd+='print "*"$7"-" drv $11"-"$5"."$3"-" cores "-" drv $11"-"$5'
 946
 947     # Tag file directory shorthand.
 948     tfd="${JOB_SPECS_DIR}"
 949     case "${TEST_CODE}" in
 950         # Select specific performance tests based on jenkins job type variable.
 951         *"device"* )
 952             readarray -t test_tag_array <<< $(grep -v "#" \
 953                 ${tfd}/vpp_device/${DUT}-${NODENESS}-${FLAVOR}.md |
 954                 awk {"$awk_nics_sub_cmd"} || echo "devicetest") || die
 955             SELECTION_MODE="--test"
 956             ;;
 957         *"hoststack-daily"* )
 958             readarray -t test_tag_array <<< $(grep -v "#" \
 959                 ${tfd}/hoststack_daily/${DUT}-${NODENESS}-${FLAVOR}.md |
 960                 awk {"$awk_nics_sub_cmd"} || echo "perftest") || die
 961             SELECTION_MODE="--test"
 962             ;;
 963         *"ndrpdr-weekly"* )
 964             readarray -t test_tag_array <<< $(grep -v "#" \
 965                 ${tfd}/ndrpdr_weekly/${DUT}-${NODENESS}-${FLAVOR}.md |
 966                 awk {"$awk_nics_sub_cmd"} || echo "perftest") || die
 967             SELECTION_MODE="--test"
 968             ;;
 969         *"mrr-daily"* )
 970             readarray -t test_tag_array <<< $(grep -v "#" \
 971                 ${tfd}/mrr_daily/${DUT}-${NODENESS}-${FLAVOR}.md |
 972                 awk {"$awk_nics_sub_cmd"} || echo "perftest") || die
 973             SELECTION_MODE="--test"
 974             ;;
 975         *"mrr-weekly"* )
 976             readarray -t test_tag_array <<< $(grep -v "#" \
 977                 ${tfd}/mrr_weekly/${DUT}-${NODENESS}-${FLAVOR}.md |
 978                 awk {"$awk_nics_sub_cmd"} || echo "perftest") || die
 979             SELECTION_MODE="--test"
 980             ;;
 981         *"report-iterative"* )
 982             test_sets=(${TEST_TAG_STRING//:/ })
 983             # Run only one test set per run
 984             report_file=${test_sets[0]}.md
 985             readarray -t test_tag_array <<< $(grep -v "#" \
 986                 ${tfd}/report_iterative/${NODENESS}-${FLAVOR}/${report_file} |
 987                 awk {"$awk_nics_sub_cmd"} || echo "perftest") || die
 988             SELECTION_MODE="--test"
 989             ;;
 990         *"report-coverage"* )
 991             test_sets=(${TEST_TAG_STRING//:/ })
 992             # Run only one test set per run
 993             report_file=${test_sets[0]}.md
 994             readarray -t test_tag_array <<< $(grep -v "#" \
 995                 ${tfd}/report_coverage/${NODENESS}-${FLAVOR}/${report_file} |
 996                 awk {"$awk_nics_sub_cmd"} || echo "perftest") || die
 997             SELECTION_MODE="--test"
 998             ;;
 999         * )
1000             if [[ -z "${TEST_TAG_STRING-}" ]]; then
1001                 # If nothing is specified, we will run pre-selected tests by
1002                 # following tags.
1003                 test_tag_array=("mrrAND${default_nic}AND1cAND64bANDethip4-ip4base"
1004                                 "mrrAND${default_nic}AND1cAND78bANDethip6-ip6base"
1005                                 "mrrAND${default_nic}AND1cAND64bANDeth-l2bdbasemaclrn"
1006                                 "mrrAND${default_nic}AND1cAND64bANDeth-l2xcbase"
1007                                 "!drv_af_xdp" "!drv_avf")
1008             else
1009                 # If trigger contains tags, split them into array.
1010                 test_tag_array=(${TEST_TAG_STRING//:/ })
1011             fi
1012             SELECTION_MODE="--include"
1013             ;;
1014     esac
1015
1016     # Blacklisting certain tags per topology.
1017     #
1018     # Reasons for blacklisting:
1019     # - ipsechw - Blacklisted on testbeds without crypto hardware accelerator.
1020     case "${TEST_CODE}" in
1021         *"1n-vbox"*)
1022             test_tag_array+=("!avf")
1023             test_tag_array+=("!vhost")
1024             test_tag_array+=("!flow")
1025             ;;
1026         *"1n_tx2"*)
1027             test_tag_array+=("!flow")
1028             ;;
1029         *"2n-clx"*)
1030             test_tag_array+=("!ipsechw")
1031             ;;
1032         *"2n-icx"*)
1033             test_tag_array+=("!ipsechw")
1034             ;;
1035         *"2n-spr"*)
1036             test_tag_array+=("!ipsechw")
1037             ;;
1038         *"2n-tx2"*)
1039             test_tag_array+=("!ipsechw")
1040             ;;
1041         *"2n-zn2"*)
1042             test_tag_array+=("!ipsechw")
1043             ;;
1044         *"3n-alt"*)
1045             test_tag_array+=("!ipsechw")
1046             ;;
1047         *"3n-icx"*)
1048             test_tag_array+=("!ipsechw")
1049             test_tag_array+=("!3_node_double_link_topoANDnic_intel-xxv710")
1050             ;;
1051         *"3n-snr"*)
1052             ;;
1053         *"3na-spr"*)
1054             test_tag_array+=("!ipsechw")
1055             ;;
1056         *"3nb-spr"*)
1057             test_tag_array+=("!ipsechw")
1058             ;;
1059         *"3n-tsh"*)
1060             test_tag_array+=("!drv_avf")
1061             test_tag_array+=("!ipsechw")
1062             ;;
1063         *"1n-aws"* | *"2n-aws"* | *"3n-aws"*)
1064             test_tag_array+=("!ipsechw")
1065             ;;
1066         *"1n-c6gn"* | *"2n-c6gn"* | *"3n-c6gn"*)
1067             test_tag_array+=("!ipsechw")
1068             ;;
1069         *"1n-c6in"* | *"2n-c6in"* | *"3n-c6in"*)
1070             test_tag_array+=("!ipsechw")
1071             ;;
1072     esac
1073
1074     # We will add excluded NICs.
1075     test_tag_array+=("${exclude_nics[@]/#/!NIC_}")
1076
1077     TAGS=()
1078     prefix=""
1079     if [[ "${TEST_CODE}" == "vpp-"* ]]; then
1080         if [[ "${TEST_CODE}" != *"device"* ]]; then
1081             # Automatic prefixing for VPP perf jobs to limit the NIC used.
1082             if [[ "${TEST_TAG_STRING-}" != *"nic_"* ]]; then
1083                 prefix="${default_nic}AND"
1084             fi
1085         fi
1086     fi
1087     set +x
1088     for tag in "${test_tag_array[@]}"; do
1089         if [[ "${tag}" == "!"* ]]; then
1090             # Exclude tags are not prefixed.
1091             TAGS+=("${tag}")
1092         elif [[ "${tag}" == " "* || "${tag}" == *"perftest"* ]]; then
1093             # Badly formed tag expressions can trigger way too much tests.
1094             set -x
1095             warn "The following tag expression hints at bad trigger: ${tag}"
1096             warn "Possible cause: Multiple triggers in a single comment."
1097             die "Aborting to avoid triggering too many tests."
1098         elif [[ "${tag}" == *"OR"* ]]; then
1099             # If OR had higher precedence than AND, it would be useful here.
1100             # Some people think it does, thus triggering way too much tests.
1101             set -x
1102             warn "The following tag expression hints at bad trigger: ${tag}"
1103             warn "Operator OR has lower precedence than AND. Use space instead."
1104             die "Aborting to avoid triggering too many tests."
1105         elif [[ "${tag}" != "" && "${tag}" != "#"* ]]; then
1106             # Empty and comment lines are skipped.
1107             # Other lines are normal tags, they are to be prefixed.
1108             TAGS+=("${prefix}${tag}")
1109         fi
1110     done
1111     set -x
1112 }
1113
1114
1115 function select_topology () {
1116
1117     # Variables read:
1118     # - NODENESS - Node multiplicity of testbed, either "2n" or "3n".
1119     # - FLAVOR - Node flavor string, e.g. "clx" or "skx".
1120     # - CSIT_DIR - Path to existing root of local CSIT git repository.
1121     # - TOPOLOGIES_DIR - Path to existing directory with available topologies.
1122     # Variables set:
1123     # - TOPOLOGIES - Array of paths to suitable topology yaml files.
1124     # - TOPOLOGIES_TAGS - Tag expression selecting tests for the topology.
1125     # Functions called:
1126     # - die - Print to stderr and exit.
1127
1128     set -exuo pipefail
1129
1130     case_text="${NODENESS}_${FLAVOR}"
1131     case "${case_text}" in
1132         "1n_vbox")
1133             TOPOLOGIES=( "${TOPOLOGIES_DIR}"/*vpp_device*.template )
1134             TOPOLOGIES_TAGS="2_node_single_link_topo"
1135             ;;
1136         "1n_skx" | "1n_tx2")
1137             TOPOLOGIES=( "${TOPOLOGIES_DIR}"/*vpp_device*.template )
1138             TOPOLOGIES_TAGS="2_node_single_link_topo"
1139             ;;
1140         "2n_skx")
1141             TOPOLOGIES=( "${TOPOLOGIES_DIR}"/*2n_skx*.yaml )
1142             TOPOLOGIES_TAGS="2_node_*_link_topo"
1143             ;;
1144         "2n_zn2")
1145             TOPOLOGIES=( "${TOPOLOGIES_DIR}"/*2n_zn2*.yaml )
1146             TOPOLOGIES_TAGS="2_node_*_link_topo"
1147             ;;
1148         "3n_skx")
1149             TOPOLOGIES=( "${TOPOLOGIES_DIR}"/*3n_skx*.yaml )
1150             TOPOLOGIES_TAGS="3_node_*_link_topo"
1151             ;;
1152         "3n_icx")
1153             TOPOLOGIES=( "${TOPOLOGIES_DIR}"/*3n_icx*.yaml )
1154             TOPOLOGIES_TAGS="3_node_*_link_topo"
1155             ;;
1156         "3na_spr")
1157             TOPOLOGIES=( "${TOPOLOGIES_DIR}"/*3na_spr*.yaml )
1158             TOPOLOGIES_TAGS="3_node_*_link_topo"
1159             ;;
1160         "3nb_spr")
1161             TOPOLOGIES=( "${TOPOLOGIES_DIR}"/*3nb_spr*.yaml )
1162             TOPOLOGIES_TAGS="3_node_*_link_topo"
1163             ;;
1164         "2n_clx")
1165             TOPOLOGIES=( "${TOPOLOGIES_DIR}"/*2n_clx*.yaml )
1166             TOPOLOGIES_TAGS="2_node_*_link_topo"
1167             ;;
1168         "2n_icx")
1169             TOPOLOGIES=( "${TOPOLOGIES_DIR}"/*2n_icx*.yaml )
1170             TOPOLOGIES_TAGS="2_node_*_link_topo"
1171             ;;
1172         "2n_spr")
1173             TOPOLOGIES=( "${TOPOLOGIES_DIR}"/*2n_spr*.yaml )
1174             TOPOLOGIES_TAGS="2_node_*_link_topo"
1175             ;;
1176         "3n_snr")
1177             TOPOLOGIES=( "${TOPOLOGIES_DIR}"/*3n_snr*.yaml )
1178             TOPOLOGIES_TAGS="3_node_single_link_topo"
1179             ;;
1180         "3n_tsh")
1181             TOPOLOGIES=( "${TOPOLOGIES_DIR}"/*3n_tsh*.yaml )
1182             TOPOLOGIES_TAGS="3_node_single_link_topo"
1183             ;;
1184         "2n_tx2")
1185             TOPOLOGIES=( "${TOPOLOGIES_DIR}"/*2n_tx2*.yaml )
1186             TOPOLOGIES_TAGS="2_node_single_link_topo"
1187             ;;
1188         "3n_alt")
1189             TOPOLOGIES=( "${TOPOLOGIES_DIR}"/*3n_alt*.yaml )
1190             TOPOLOGIES_TAGS="3_node_single_link_topo"
1191             ;;
1192         "1n_aws")
1193             TOPOLOGIES=( "${TOPOLOGIES_DIR}"/*1n-aws*.yaml )
1194             TOPOLOGIES_TAGS="1_node_single_link_topo"
1195             ;;
1196         "2n_aws")
1197             TOPOLOGIES=( "${TOPOLOGIES_DIR}"/*2n-aws*.yaml )
1198             TOPOLOGIES_TAGS="2_node_single_link_topo"
1199             ;;
1200         "3n_aws")
1201             TOPOLOGIES=( "${TOPOLOGIES_DIR}"/*3n-aws*.yaml )
1202             TOPOLOGIES_TAGS="3_node_single_link_topo"
1203             ;;
1204         "1n_c6gn")
1205             TOPOLOGIES=( "${TOPOLOGIES_DIR}"/*1n-c6gn*.yaml )
1206             TOPOLOGIES_TAGS="1_node_single_link_topo"
1207             ;;
1208         "2n_c6gn")
1209             TOPOLOGIES=( "${TOPOLOGIES_DIR}"/*2n-c6gn*.yaml )
1210             TOPOLOGIES_TAGS="2_node_single_link_topo"
1211             ;;
1212         "3n_c6gn")
1213             TOPOLOGIES=( "${TOPOLOGIES_DIR}"/*3n-c6gn*.yaml )
1214             TOPOLOGIES_TAGS="3_node_single_link_topo"
1215             ;;
1216         "1n_c6in")
1217             TOPOLOGIES=( "${TOPOLOGIES_DIR}"/*1n-c6in*.yaml )
1218             TOPOLOGIES_TAGS="1_node_single_link_topo"
1219             ;;
1220         "2n_c6in")
1221             TOPOLOGIES=( "${TOPOLOGIES_DIR}"/*2n-c6in*.yaml )
1222             TOPOLOGIES_TAGS="2_node_single_link_topo"
1223             ;;
1224         "3n_c6in")
1225             TOPOLOGIES=( "${TOPOLOGIES_DIR}"/*3n-c6in*.yaml )
1226             TOPOLOGIES_TAGS="3_node_single_link_topo"
1227             ;;
1228         *)
1229             # No falling back to default, that should have been done
1230             # by the function which has set NODENESS and FLAVOR.
1231             die "Unknown specification: ${case_text}"
1232     esac
1233
1234     if [[ -z "${TOPOLOGIES-}" ]]; then
1235         die "No applicable topology found!"
1236     fi
1237 }
1238
1239
1240 function set_environment_variables () {
1241
1242     # Depending on testbed topology, overwrite defaults set in the
1243     # resources/libraries/python/Constants.py file
1244     #
1245     # Variables read:
1246     # - TEST_CODE - String affecting test selection, usually jenkins job name.
1247     # Variables set:
1248     # See specific cases
1249
1250     set -exuo pipefail
1251
1252     case "${TEST_CODE}" in
1253         *"1n-aws"* | *"2n-aws"* | *"3n-aws"*)
1254             export TREX_RX_DESCRIPTORS_COUNT=1024
1255             export TREX_EXTRA_CMDLINE="--mbuf-factor 19"
1256             export TREX_CORE_COUNT=6
1257             # Settings to prevent duration stretching.
1258             export PERF_TRIAL_STL_DELAY=0.1
1259             ;;
1260         *"1n-c6gn"* | *"2n-c6gn"* | *"3n-c6gn"*)
1261             export TREX_RX_DESCRIPTORS_COUNT=1024
1262             export TREX_EXTRA_CMDLINE="--mbuf-factor 19"
1263             export TREX_CORE_COUNT=6
1264             # Settings to prevent duration stretching.
1265             export PERF_TRIAL_STL_DELAY=0.1
1266             ;;
1267         *"1n-c6in"* | *"2n-c6in"* | *"3n-c6in"*)
1268             export TREX_RX_DESCRIPTORS_COUNT=1024
1269             export TREX_EXTRA_CMDLINE="--mbuf-factor 19"
1270             export TREX_CORE_COUNT=6
1271             # Settings to prevent duration stretching.
1272             export PERF_TRIAL_STL_DELAY=0.1
1273             ;;
1274         *"2n-zn2"*)
1275             # Maciek's workaround for Zen2 with lower amount of cores.
1276             export TREX_CORE_COUNT=14
1277     esac
1278 }
1279
1280
1281 function untrap_and_unreserve_testbed () {
1282
1283     # Use this as a trap function to ensure testbed does not remain reserved.
1284     # Perhaps call directly before script exit, to free testbed for other jobs.
1285     # This function is smart enough to avoid multiple unreservations (so safe).
1286     # Topo cleanup is executed (call it best practice), ignoring failures.
1287     #
1288     # Hardcoded values:
1289     # - default message to die with if testbed might remain reserved.
1290     # Arguments:
1291     # - ${1} - Message to die with if unreservation fails. Default hardcoded.
1292     # Variables read (by inner function):
1293     # - WORKING_TOPOLOGY - Path to topology yaml file of the reserved testbed.
1294     # - PYTHON_SCRIPTS_DIR - Path to directory holding Python scripts.
1295     # Variables set:
1296     # - TERRAFORM_MODULE_DIR - Terraform module directory.
1297     # - WORKING_TOPOLOGY - Set to empty string on successful unreservation.
1298     # Trap unregistered:
1299     # - EXIT - Failure to untrap is reported, but ignored otherwise.
1300     # Functions called:
1301     # - die - Print to stderr and exit.
1302     # - ansible_playbook - Perform an action using ansible, see ansible.sh
1303
1304     set -xo pipefail
1305     set +eu  # We do not want to exit early in a "teardown" function.
1306     trap - EXIT || echo "Trap deactivation failed, continuing anyway."
1307     wt="${WORKING_TOPOLOGY}"  # Just to avoid too long lines.
1308     if [[ -z "${wt-}" ]]; then
1309         set -eu
1310         warn "Testbed looks unreserved already. Trap removal failed before?"
1311     else
1312         ansible_playbook "cleanup" || true
1313         python3 "${PYTHON_SCRIPTS_DIR}/topo_reservation.py" -c -t "${wt}" || {
1314             die "${1:-FAILED TO UNRESERVE, FIX MANUALLY.}" 2
1315         }
1316         case "${TEST_CODE}" in
1317             *"1n-aws"* | *"2n-aws"* | *"3n-aws"*)
1318                 TERRAFORM_MODULE_DIR="terraform-aws-${NODENESS}-${FLAVOR}-c5n"
1319                 terraform_destroy || die "Failed to call terraform destroy."
1320                 ;;
1321             *"1n-c6gn"* | *"2n-c6gn"* | *"3n-c6gn"*)
1322                 TERRAFORM_MODULE_DIR="terraform-aws-${NODENESS}-${FLAVOR}"
1323                 terraform_destroy || die "Failed to call terraform destroy."
1324                 ;;
1325             *"1n-c6in"* | *"2n-c6in"* | *"3n-c6in"*)
1326                 TERRAFORM_MODULE_DIR="terraform-aws-${NODENESS}-${FLAVOR}"
1327                 terraform_destroy || die "Failed to call terraform destroy."
1328                 ;;
1329             *)
1330                 ;;
1331         esac
1332         WORKING_TOPOLOGY=""
1333         set -eu
1334     fi
1335 }
1336
1337
1338 function warn () {
1339
1340     # Print the message to standard error.
1341     #
1342     # Arguments:
1343     # - ${@} - The text of the message.
1344
1345     set -exuo pipefail
1346
1347     echo "$@" >&2
1348 }