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
 537     # TODO: ci-management scripts no longer need to perform this.
 538
 539     set -exuo pipefail
 540
 541     if [[ "${GERRIT_EVENT_TYPE-}" == "comment-added" ]]; then
 542         case "${TEST_CODE}" in
 543             *"device"*)
 544                 trigger="devicetest"
 545                 ;;
 546             *"perf"*)
 547                 trigger="perftest"
 548                 ;;
 549             *)
 550                 die "Unknown specification: ${TEST_CODE}"
 551         esac
 552         # Ignore lines not containing the trigger word.
 553         comment=$(fgrep "${trigger}" <<< "${GERRIT_EVENT_COMMENT_TEXT}" || true)
 554         # The vpp-csit triggers trail stuff we are not interested in.
 555         # Removing them and trigger word: https://unix.stackexchange.com/a/13472
 556         # (except relying on \s whitespace, \S non-whitespace and . both).
 557         # The last string is concatenated, only the middle part is expanded.
 558         cmd=("grep" "-oP" '\S*'"${trigger}"'\S*\s\K.+$') || die "Unset trigger?"
 559         # On parsing error, TEST_TAG_STRING probably stays empty.
 560         TEST_TAG_STRING=$("${cmd[@]}" <<< "${comment}" || true)
 561         if [[ -z "${TEST_TAG_STRING-}" ]]; then
 562             # Probably we got a base64 encoded comment.
 563             comment="${GERRIT_EVENT_COMMENT_TEXT}"
 564             comment=$(base64 --decode <<< "${comment}" || true)
 565             comment=$(fgrep "${trigger}" <<< "${comment}" || true)
 566             TEST_TAG_STRING=$("${cmd[@]}" <<< "${comment}" || true)
 567         fi
 568         if [[ -n "${TEST_TAG_STRING-}" ]]; then
 569             test_tag_array=(${TEST_TAG_STRING})
 570             if [[ "${test_tag_array[0]}" == "icl" ]]; then
 571                 export GRAPH_NODE_VARIANT="icl"
 572                 TEST_TAG_STRING="${test_tag_array[@]:1}" || true
 573             elif [[ "${test_tag_array[0]}" == "skx" ]]; then
 574                 export GRAPH_NODE_VARIANT="skx"
 575                 TEST_TAG_STRING="${test_tag_array[@]:1}" || true
 576             fi
 577         fi
 578     fi
 579 }
 580
 581
 582 function installed () {
 583
 584     # Check if the given utility is installed. Fail if not installed.
 585     #
 586     # Duplicate of common.sh function, as this file is also used standalone.
 587     #
 588     # Arguments:
 589     # - ${1} - Utility to check.
 590     # Returns:
 591     # - 0 - If command is installed.
 592     # - 1 - If command is not installed.
 593
 594     set -exuo pipefail
 595
 596     command -v "${1}"
 597 }
 598
 599
 600 function move_archives () {
 601
 602     # Move archive directory to top of workspace, if not already there.
 603     #
 604     # ARCHIVE_DIR is positioned relative to CSIT_DIR,
 605     # but in some jobs CSIT_DIR is not same as WORKSPACE
 606     # (e.g. under VPP_DIR). To simplify ci-management settings,
 607     # we want to move the data to the top. We do not want simple copy,
 608     # as ci-management is eager with recursive search.
 609     #
 610     # As some scripts may call this function multiple times,
 611     # the actual implementation use copying and deletion,
 612     # so the workspace gets "union" of contents (except overwrites on conflict).
 613     # The consequence is empty ARCHIVE_DIR remaining after this call.
 614     #
 615     # As the source directory is emptied,
 616     # the check for dirs being different is essential.
 617     #
 618     # Variables read:
 619     # - WORKSPACE - Jenkins workspace, move only if the value is not empty.
 620     #   Can be unset, then it speeds up manual testing.
 621     # - ARCHIVE_DIR - Path to directory with content to be moved.
 622     # Directories updated:
 623     # - ${WORKSPACE}/archives/ - Created if does not exist.
 624     #   Content of ${ARCHIVE_DIR}/ is moved.
 625     # Functions called:
 626     # - die - Print to stderr and exit.
 627
 628     set -exuo pipefail
 629
 630     if [[ -n "${WORKSPACE-}" ]]; then
 631         target=$(readlink -f "${WORKSPACE}/archives")
 632         if [[ "${target}" != "${ARCHIVE_DIR}" ]]; then
 633             mkdir -p "${target}" || die "Archives dir create failed."
 634             cp -rf "${ARCHIVE_DIR}"/* "${target}" || die "Copy failed."
 635             rm -rf "${ARCHIVE_DIR}"/* || die "Delete failed."
 636         fi
 637     fi
 638 }
 639
 640
 641 function prepare_topology () {
 642
 643     # Prepare virtual testbed topology if needed based on flavor.
 644
 645     # Variables read:
 646     # - TEST_CODE - String affecting test selection, usually jenkins job name.
 647     # - NODENESS - Node multiplicity of testbed, either "2n" or "3n".
 648     # - FLAVOR - Node flavor string, e.g. "clx" or "skx".
 649     # Variables set:
 650     # - TERRAFORM_MODULE_DIR - Terraform module directory.
 651     # Functions called:
 652     # - die - Print to stderr and exit.
 653     # - terraform_init - Terraform init topology.
 654     # - terraform_apply - Terraform apply topology.
 655
 656     set -exuo pipefail
 657
 658     case_text="${NODENESS}_${FLAVOR}"
 659     case "${case_text}" in
 660         "1n_aws" | "2n_aws" | "3n_aws")
 661             export TF_VAR_testbed_name="${TEST_CODE}"
 662             TERRAFORM_MODULE_DIR="terraform-aws-${NODENESS}-${FLAVOR}-c5n"
 663             terraform_init || die "Failed to call terraform init."
 664             trap "terraform_destroy" ERR EXIT || {
 665                 die "Trap attempt failed, please cleanup manually. Aborting!"
 666             }
 667             terraform_apply || die "Failed to call terraform apply."
 668             ;;
 669         "1n_c6gn" | "2n_c6gn" | "3n_c6gn")
 670             export TF_VAR_testbed_name="${TEST_CODE}"
 671             TERRAFORM_MODULE_DIR="terraform-aws-${NODENESS}-c6gn"
 672             terraform_init || die "Failed to call terraform init."
 673             trap "terraform_destroy" ERR EXIT || {
 674                 die "Trap attempt failed, please cleanup manually. Aborting!"
 675             }
 676             terraform_apply || die "Failed to call terraform apply."
 677             ;;
 678         "1n_c6in" | "2n_c6in" | "3n_c6in")
 679             export TF_VAR_testbed_name="${TEST_CODE}"
 680             TERRAFORM_MODULE_DIR="terraform-aws-${NODENESS}-c6in"
 681             terraform_init || die "Failed to call terraform init."
 682             trap "terraform_destroy" ERR EXIT || {
 683                 die "Trap attempt failed, please cleanup manually. Aborting!"
 684             }
 685             terraform_apply || die "Failed to call terraform apply."
 686             ;;
 687     esac
 688 }
 689
 690
 691 function reserve_and_cleanup_testbed () {
 692
 693     # Reserve physical testbed, perform cleanup, register trap to unreserve.
 694     # When cleanup fails, remove from topologies and keep retrying
 695     # until all topologies are removed.
 696     #
 697     # Variables read:
 698     # - TOPOLOGIES - Array of paths to topology yaml to attempt reservation on.
 699     # - PYTHON_SCRIPTS_DIR - Path to directory holding the reservation script.
 700     # - BUILD_TAG - Any string suitable as filename, identifying
 701     #   test run executing this function. May be unset.
 702     # Variables set:
 703     # - TOPOLOGIES - Array of paths to topologies, with failed cleanups removed.
 704     # - WORKING_TOPOLOGY - Path to topology yaml file of the reserved testbed.
 705     # Functions called:
 706     # - die - Print to stderr and exit.
 707     # - ansible_playbook - Perform an action using ansible, see ansible.sh
 708     # Traps registered:
 709     # - EXIT - Calls cancel_all for ${WORKING_TOPOLOGY}.
 710
 711     set -exuo pipefail
 712
 713     while true; do
 714         for topo in "${TOPOLOGIES[@]}"; do
 715             set +e
 716             scrpt="${PYTHON_SCRIPTS_DIR}/topo_reservation.py"
 717             opts=("-t" "${topo}" "-r" "${BUILD_TAG:-Unknown}")
 718             python3 "${scrpt}" "${opts[@]}"
 719             result="$?"
 720             set -e
 721             if [[ "${result}" == "0" ]]; then
 722                 # Trap unreservation before cleanup check,
 723                 # so multiple jobs showing failed cleanup improve chances
 724                 # of humans to notice and fix.
 725                 WORKING_TOPOLOGY="${topo}"
 726                 echo "Reserved: ${WORKING_TOPOLOGY}"
 727                 trap "untrap_and_unreserve_testbed" EXIT || {
 728                     message="TRAP ATTEMPT AND UNRESERVE FAILED, FIX MANUALLY."
 729                     untrap_and_unreserve_testbed "${message}" || {
 730                         die "Teardown should have died, not failed."
 731                     }
 732                     die "Trap attempt failed, unreserve succeeded. Aborting."
 733                 }
 734                 # Cleanup + calibration checks
 735                 set +e
 736                 ansible_playbook "cleanup, calibration"
 737                 result="$?"
 738                 set -e
 739                 if [[ "${result}" == "0" ]]; then
 740                     break
 741                 fi
 742                 warn "Testbed cleanup failed: ${topo}"
 743                 untrap_and_unreserve_testbed "Fail of unreserve after cleanup."
 744             fi
 745             # Else testbed is accessible but currently reserved, moving on.
 746         done
 747
 748         if [[ -n "${WORKING_TOPOLOGY-}" ]]; then
 749             # Exit the infinite while loop if we made a reservation.
 750             warn "Reservation and cleanup successful."
 751             break
 752         fi
 753
 754         if [[ "${#TOPOLOGIES[@]}" == "0" ]]; then
 755             die "Run out of operational testbeds!"
 756         fi
 757
 758         # Wait ~3minutes before next try.
 759         sleep_time="$[ ( ${RANDOM} % 20 ) + 180 ]s" || {
 760             die "Sleep time calculation failed."
 761         }
 762         echo "Sleeping ${sleep_time}"
 763         sleep "${sleep_time}" || die "Sleep failed."
 764     done
 765 }
 766
 767
 768 function run_robot () {
 769
 770     # Run robot with options based on input variables.
 771     #
 772     # Variables read:
 773     # - CSIT_DIR - Path to existing root of local CSIT git repository.
 774     # - ARCHIVE_DIR - Path to store robot result files in.
 775     # - ROBOT_ARGS, EXPANDED_TAGS - See compose_robot_arguments.sh
 776     # - GENERATED_DIR - Tests are assumed to be generated under there.
 777     # Variables set:
 778     # - ROBOT_EXIT_STATUS - Exit status of most recent robot invocation.
 779     # Functions called:
 780     # - die - Print to stderr and exit.
 781
 782     set -exuo pipefail
 783
 784     all_options=("--outputdir" "${ARCHIVE_DIR}" "${ROBOT_ARGS[@]}")
 785     all_options+=("${EXPANDED_TAGS[@]}")
 786
 787     pushd "${CSIT_DIR}" || die "Change directory operation failed."
 788     set +e
 789     robot "${all_options[@]}" "${GENERATED_DIR}/tests/"
 790     ROBOT_EXIT_STATUS="$?"
 791     set -e
 792
 793     popd || die "Change directory operation failed."
 794 }
 795
 796
 797 function select_arch_os () {
 798
 799     # Set variables affected by local CPU architecture and operating system.
 800     #
 801     # Variables set:
 802     # - VPP_VER_FILE - Name of file in CSIT dir containing vpp stable version.
 803     # - IMAGE_VER_FILE - Name of file in CSIT dir containing the image name.
 804     # - PKG_SUFFIX - Suffix of OS package file name, "rpm" or "deb."
 805
 806     set -exuo pipefail
 807
 808     source /etc/os-release || die "Get OS release failed."
 809
 810     case "${ID}" in
 811         "ubuntu"*)
 812             case "${VERSION}" in
 813                 *"LTS (Jammy Jellyfish)"*)
 814                     IMAGE_VER_FILE="VPP_DEVICE_IMAGE_UBUNTU_JAMMY"
 815                     VPP_VER_FILE="VPP_STABLE_VER_UBUNTU_JAMMY"
 816                     PKG_SUFFIX="deb"
 817                     ;;
 818                 *)
 819                     die "Unsupported Ubuntu version!"
 820                     ;;
 821             esac
 822             ;;
 823         *)
 824             die "Unsupported distro or OS!"
 825             ;;
 826     esac
 827
 828     arch=$(uname -m) || {
 829         die "Get CPU architecture failed."
 830     }
 831
 832     case "${arch}" in
 833         "aarch64")
 834             IMAGE_VER_FILE="${IMAGE_VER_FILE}_ARM"
 835             ;;
 836         *)
 837             ;;
 838     esac
 839 }
 840
 841
 842 function select_tags () {
 843
 844     # Variables read:
 845     # - WORKING_TOPOLOGY - Path to topology yaml file of the reserved testbed.
 846     # - TEST_CODE - String affecting test selection, usually jenkins job name.
 847     # - DUT - CSIT test/ subdirectory, set while processing tags.
 848     # - TEST_TAG_STRING - String selecting tags, from gerrit comment.
 849     #   Can be unset.
 850     # - TOPOLOGIES_DIR - Path to existing directory with available tpologies.
 851     # - BASH_FUNCTION_DIR - Directory with input files to process.
 852     # Variables set:
 853     # - TAGS - Array of processed tag boolean expressions.
 854     # - SELECTION_MODE - Selection criteria [test, suite, include, exclude].
 855
 856     set -exuo pipefail
 857
 858     # NIC SELECTION
 859     case "${TEST_CODE}" in
 860         *"1n-aws"* | *"1n-c6gn"* | *"1n-c6in"*)
 861             start_pattern='^  SUT:'
 862             ;;
 863         *)
 864             start_pattern='^  TG:'
 865             ;;
 866     esac
 867     end_pattern='^ \? \?[A-Za-z0-9]\+:'
 868     # Remove the sections from topology file
 869     sed_command="/${start_pattern}/,/${end_pattern}/d"
 870     # All topologies NICs
 871     available=$(sed "${sed_command}" "${TOPOLOGIES_DIR}"/* \
 872                 | grep -hoP "model: \K.*" | sort -u)
 873     # Selected topology NICs
 874     reserved=$(sed "${sed_command}" "${WORKING_TOPOLOGY}" \
 875                | grep -hoP "model: \K.*" | sort -u)
 876     # All topologies NICs - Selected topology NICs
 877     exclude_nics=($(comm -13 <(echo "${reserved}") <(echo "${available}"))) || {
 878         die "Computation of excluded NICs failed."
 879     }
 880
 881     # Select default NIC tag.
 882     case "${TEST_CODE}" in
 883         *"3n-snr"*)
 884             default_nic="nic_intel-e822cq"
 885             ;;
 886         *"3n-tsh"*)
 887             default_nic="nic_intel-x520-da2"
 888             ;;
 889         *"3n-icx"* | *"2n-icx"*)
 890             default_nic="nic_intel-e810cq"
 891             ;;
 892         *"3na-spr"*)
 893             default_nic="nic_mellanox-cx7veat"
 894             ;;
 895         *"3nb-spr"*)
 896             default_nic="nic_intel-e810cq"
 897             ;;
 898         *"2n-spr"*)
 899             default_nic="nic_intel-e810cq"
 900             ;;
 901         *"2n-clx"* | *"2n-zn2"*)
 902             default_nic="nic_intel-xxv710"
 903             ;;
 904         *"2n-tx2"* | *"3n-alt"*)
 905             default_nic="nic_intel-xl710"
 906             ;;
 907         *"1n-aws"* | *"2n-aws"* | *"3n-aws"*)
 908             default_nic="nic_amazon-nitro-50g"
 909             ;;
 910         *"1n-c6gn"* | *"2n-c6gn"* | *"3n-c6gn"*)
 911             default_nic="nic_amazon-nitro-100g"
 912             ;;
 913         *"1n-c6in"* | *"2n-c6in"* | *"3n-c6in"*)
 914             default_nic="nic_amazon-nitro-200g"
 915             ;;
 916         *)
 917             default_nic="nic_intel-x710"
 918             ;;
 919     esac
 920
 921     sed_nic_sub_cmd="sed s/\${default_nic}/${default_nic}/"
 922     awk_nics_sub_cmd=""
 923     awk_nics_sub_cmd+='gsub("xxv710","25ge2p1xxv710");'
 924     awk_nics_sub_cmd+='gsub("x710","10ge2p1x710");'
 925     awk_nics_sub_cmd+='gsub("xl710","40ge2p1xl710");'
 926     awk_nics_sub_cmd+='gsub("x520-da2","10ge2p1x520");'
 927     awk_nics_sub_cmd+='gsub("cx556a","100ge2p1cx556a");'
 928     awk_nics_sub_cmd+='gsub("cx7veat","200ge2p1cx7veat");'
 929     awk_nics_sub_cmd+='gsub("cx6dx","100ge2p1cx6dx");'
 930     awk_nics_sub_cmd+='gsub("e810cq","100ge2p1e810cq");'
 931     awk_nics_sub_cmd+='gsub("vic1227","10ge2p1vic1227");'
 932     awk_nics_sub_cmd+='gsub("vic1385","40ge2p1vic1385");'
 933     awk_nics_sub_cmd+='gsub("nitro-50g","50ge1p1ENA");'
 934     awk_nics_sub_cmd+='gsub("nitro-100g","100ge1p1ENA");'
 935     awk_nics_sub_cmd+='gsub("nitro-200g","200ge1p1ENA");'
 936     awk_nics_sub_cmd+='if ($9 =="drv_avf") drv="avf-";'
 937     awk_nics_sub_cmd+='else if ($9 =="drv_rdma_core") drv ="rdma-";'
 938     awk_nics_sub_cmd+='else if ($9 =="drv_mlx5_core") drv ="mlx5-";'
 939     awk_nics_sub_cmd+='else if ($9 =="drv_af_xdp") drv ="af-xdp-";'
 940     awk_nics_sub_cmd+='else drv="";'
 941     awk_nics_sub_cmd+='if ($1 =="-") cores="";'
 942     awk_nics_sub_cmd+='else cores=$1;'
 943     awk_nics_sub_cmd+='print "*"$7"-" drv $11"-"$5"."$3"-" cores "-" drv $11"-"$5'
 944
 945     # Tag file directory shorthand.
 946     tfd="${JOB_SPECS_DIR}"
 947     case "${TEST_CODE}" in
 948         # Select specific performance tests based on jenkins job type variable.
 949         *"device"* )
 950             readarray -t test_tag_array <<< $(grep -v "#" \
 951                 ${tfd}/vpp_device/${DUT}-${NODENESS}-${FLAVOR}.md |
 952                 awk {"$awk_nics_sub_cmd"} || echo "devicetest") || die
 953             SELECTION_MODE="--test"
 954             ;;
 955         *"hoststack-daily"* )
 956             readarray -t test_tag_array <<< $(grep -v "#" \
 957                 ${tfd}/hoststack_daily/${DUT}-${NODENESS}-${FLAVOR}.md |
 958                 awk {"$awk_nics_sub_cmd"} || echo "perftest") || die
 959             SELECTION_MODE="--test"
 960             ;;
 961         *"ndrpdr-weekly"* )
 962             readarray -t test_tag_array <<< $(grep -v "#" \
 963                 ${tfd}/ndrpdr_weekly/${DUT}-${NODENESS}-${FLAVOR}.md |
 964                 awk {"$awk_nics_sub_cmd"} || echo "perftest") || die
 965             SELECTION_MODE="--test"
 966             ;;
 967         *"mrr-daily"* )
 968             readarray -t test_tag_array <<< $(grep -v "#" \
 969                 ${tfd}/mrr_daily/${DUT}-${NODENESS}-${FLAVOR}.md |
 970                 awk {"$awk_nics_sub_cmd"} || echo "perftest") || die
 971             SELECTION_MODE="--test"
 972             ;;
 973         *"mrr-weekly"* )
 974             readarray -t test_tag_array <<< $(grep -v "#" \
 975                 ${tfd}/mrr_weekly/${DUT}-${NODENESS}-${FLAVOR}.md |
 976                 awk {"$awk_nics_sub_cmd"} || echo "perftest") || die
 977             SELECTION_MODE="--test"
 978             ;;
 979         *"report-iterative"* )
 980             test_sets=(${TEST_TAG_STRING//:/ })
 981             # Run only one test set per run
 982             report_file=${test_sets[0]}.md
 983             readarray -t test_tag_array <<< $(grep -v "#" \
 984                 ${tfd}/report_iterative/${NODENESS}-${FLAVOR}/${report_file} |
 985                 awk {"$awk_nics_sub_cmd"} || echo "perftest") || die
 986             SELECTION_MODE="--test"
 987             ;;
 988         *"report-coverage"* )
 989             test_sets=(${TEST_TAG_STRING//:/ })
 990             # Run only one test set per run
 991             report_file=${test_sets[0]}.md
 992             readarray -t test_tag_array <<< $(grep -v "#" \
 993                 ${tfd}/report_coverage/${NODENESS}-${FLAVOR}/${report_file} |
 994                 awk {"$awk_nics_sub_cmd"} || echo "perftest") || die
 995             SELECTION_MODE="--test"
 996             ;;
 997         * )
 998             if [[ -z "${TEST_TAG_STRING-}" ]]; then
 999                 # If nothing is specified, we will run pre-selected tests by
1000                 # following tags.
1001                 test_tag_array=("mrrAND${default_nic}AND1cAND64bANDethip4-ip4base"
1002                                 "mrrAND${default_nic}AND1cAND78bANDethip6-ip6base"
1003                                 "mrrAND${default_nic}AND1cAND64bANDeth-l2bdbasemaclrn"
1004                                 "mrrAND${default_nic}AND1cAND64bANDeth-l2xcbase"
1005                                 "!drv_af_xdp" "!drv_avf")
1006             else
1007                 # If trigger contains tags, split them into array.
1008                 test_tag_array=(${TEST_TAG_STRING//:/ })
1009             fi
1010             SELECTION_MODE="--include"
1011             ;;
1012     esac
1013
1014     # Blacklisting certain tags per topology.
1015     #
1016     # Reasons for blacklisting:
1017     # - ipsechw - Blacklisted on testbeds without crypto hardware accelerator.
1018     case "${TEST_CODE}" in
1019         *"1n-vbox"*)
1020             test_tag_array+=("!avf")
1021             test_tag_array+=("!vhost")
1022             test_tag_array+=("!flow")
1023             ;;
1024         *"1n_tx2"*)
1025             test_tag_array+=("!flow")
1026             ;;
1027         *"2n-clx"*)
1028             test_tag_array+=("!ipsechw")
1029             ;;
1030         *"2n-icx"*)
1031             test_tag_array+=("!ipsechw")
1032             ;;
1033         *"2n-spr"*)
1034             test_tag_array+=("!ipsechw")
1035             ;;
1036         *"2n-tx2"*)
1037             test_tag_array+=("!ipsechw")
1038             ;;
1039         *"2n-zn2"*)
1040             test_tag_array+=("!ipsechw")
1041             ;;
1042         *"3n-alt"*)
1043             test_tag_array+=("!ipsechw")
1044             ;;
1045         *"3n-icx"*)
1046             test_tag_array+=("!ipsechw")
1047             test_tag_array+=("!3_node_double_link_topoANDnic_intel-xxv710")
1048             ;;
1049         *"3n-snr"*)
1050             ;;
1051         *"3na-spr"*)
1052             test_tag_array+=("!ipsechw")
1053             ;;
1054         *"3nb-spr"*)
1055             test_tag_array+=("!ipsechw")
1056             ;;
1057         *"3n-tsh"*)
1058             test_tag_array+=("!drv_avf")
1059             test_tag_array+=("!ipsechw")
1060             ;;
1061         *"1n-aws"* | *"2n-aws"* | *"3n-aws"*)
1062             test_tag_array+=("!ipsechw")
1063             ;;
1064         *"1n-c6gn"* | *"2n-c6gn"* | *"3n-c6gn"*)
1065             test_tag_array+=("!ipsechw")
1066             ;;
1067         *"1n-c6in"* | *"2n-c6in"* | *"3n-c6in"*)
1068             test_tag_array+=("!ipsechw")
1069             ;;
1070     esac
1071
1072     # We will add excluded NICs.
1073     test_tag_array+=("${exclude_nics[@]/#/!NIC_}")
1074
1075     TAGS=()
1076     prefix=""
1077
1078     set +x
1079     if [[ "${TEST_CODE}" == "vpp-"* ]]; then
1080         if [[ "${TEST_CODE}" != *"device"* ]]; then
1081             # Automatic prefixing for VPP perf jobs to limit the NIC used and
1082             # traffic evaluation to MRR.
1083             if [[ "${TEST_TAG_STRING-}" == *"nic_"* ]]; then
1084                 prefix="${prefix}mrrAND"
1085             else
1086                 prefix="${prefix}mrrAND${default_nic}AND"
1087             fi
1088         fi
1089     fi
1090     for tag in "${test_tag_array[@]}"; do
1091         if [[ "${tag}" == "!"* ]]; then
1092             # Exclude tags are not prefixed.
1093             TAGS+=("${tag}")
1094         elif [[ "${tag}" == " "* || "${tag}" == *"perftest"* ]]; then
1095             # Badly formed tag expressions can trigger way too much tests.
1096             set -x
1097             warn "The following tag expression hints at bad trigger: ${tag}"
1098             warn "Possible cause: Multiple triggers in a single comment."
1099             die "Aborting to avoid triggering too many tests."
1100         elif [[ "${tag}" == *"OR"* ]]; then
1101             # If OR had higher precedence than AND, it would be useful here.
1102             # Some people think it does, thus triggering way too much tests.
1103             set -x
1104             warn "The following tag expression hints at bad trigger: ${tag}"
1105             warn "Operator OR has lower precedence than AND. Use space instead."
1106             die "Aborting to avoid triggering too many tests."
1107         elif [[ "${tag}" != "" && "${tag}" != "#"* ]]; then
1108             # Empty and comment lines are skipped.
1109             # Other lines are normal tags, they are to be prefixed.
1110             TAGS+=("${prefix}${tag}")
1111         fi
1112     done
1113     set -x
1114 }
1115
1116
1117 function select_topology () {
1118
1119     # Variables read:
1120     # - NODENESS - Node multiplicity of testbed, either "2n" or "3n".
1121     # - FLAVOR - Node flavor string, e.g. "clx" or "skx".
1122     # - CSIT_DIR - Path to existing root of local CSIT git repository.
1123     # - TOPOLOGIES_DIR - Path to existing directory with available topologies.
1124     # Variables set:
1125     # - TOPOLOGIES - Array of paths to suitable topology yaml files.
1126     # - TOPOLOGIES_TAGS - Tag expression selecting tests for the topology.
1127     # Functions called:
1128     # - die - Print to stderr and exit.
1129
1130     set -exuo pipefail
1131
1132     case_text="${NODENESS}_${FLAVOR}"
1133     case "${case_text}" in
1134         "1n_vbox")
1135             TOPOLOGIES=( "${TOPOLOGIES_DIR}"/*vpp_device*.template )
1136             TOPOLOGIES_TAGS="2_node_single_link_topo"
1137             ;;
1138         "1n_skx" | "1n_tx2")
1139             TOPOLOGIES=( "${TOPOLOGIES_DIR}"/*vpp_device*.template )
1140             TOPOLOGIES_TAGS="2_node_single_link_topo"
1141             ;;
1142         "2n_skx")
1143             TOPOLOGIES=( "${TOPOLOGIES_DIR}"/*2n_skx*.yaml )
1144             TOPOLOGIES_TAGS="2_node_*_link_topo"
1145             ;;
1146         "2n_zn2")
1147             TOPOLOGIES=( "${TOPOLOGIES_DIR}"/*2n_zn2*.yaml )
1148             TOPOLOGIES_TAGS="2_node_*_link_topo"
1149             ;;
1150         "3n_skx")
1151             TOPOLOGIES=( "${TOPOLOGIES_DIR}"/*3n_skx*.yaml )
1152             TOPOLOGIES_TAGS="3_node_*_link_topo"
1153             ;;
1154         "3n_icx")
1155             TOPOLOGIES=( "${TOPOLOGIES_DIR}"/*3n_icx*.yaml )
1156             TOPOLOGIES_TAGS="3_node_*_link_topo"
1157             ;;
1158         "3na_spr")
1159             TOPOLOGIES=( "${TOPOLOGIES_DIR}"/*3na_spr*.yaml )
1160             TOPOLOGIES_TAGS="3_node_*_link_topo"
1161             ;;
1162         "3nb_spr")
1163             TOPOLOGIES=( "${TOPOLOGIES_DIR}"/*3nb_spr*.yaml )
1164             TOPOLOGIES_TAGS="3_node_*_link_topo"
1165             ;;
1166         "2n_clx")
1167             TOPOLOGIES=( "${TOPOLOGIES_DIR}"/*2n_clx*.yaml )
1168             TOPOLOGIES_TAGS="2_node_*_link_topo"
1169             ;;
1170         "2n_icx")
1171             TOPOLOGIES=( "${TOPOLOGIES_DIR}"/*2n_icx*.yaml )
1172             TOPOLOGIES_TAGS="2_node_*_link_topo"
1173             ;;
1174         "2n_spr")
1175             TOPOLOGIES=( "${TOPOLOGIES_DIR}"/*2n_spr*.yaml )
1176             TOPOLOGIES_TAGS="2_node_*_link_topo"
1177             ;;
1178         "3n_snr")
1179             TOPOLOGIES=( "${TOPOLOGIES_DIR}"/*3n_snr*.yaml )
1180             TOPOLOGIES_TAGS="3_node_single_link_topo"
1181             ;;
1182         "3n_tsh")
1183             TOPOLOGIES=( "${TOPOLOGIES_DIR}"/*3n_tsh*.yaml )
1184             TOPOLOGIES_TAGS="3_node_single_link_topo"
1185             ;;
1186         "2n_tx2")
1187             TOPOLOGIES=( "${TOPOLOGIES_DIR}"/*2n_tx2*.yaml )
1188             TOPOLOGIES_TAGS="2_node_single_link_topo"
1189             ;;
1190         "3n_alt")
1191             TOPOLOGIES=( "${TOPOLOGIES_DIR}"/*3n_alt*.yaml )
1192             TOPOLOGIES_TAGS="3_node_single_link_topo"
1193             ;;
1194         "1n_aws")
1195             TOPOLOGIES=( "${TOPOLOGIES_DIR}"/*1n-aws*.yaml )
1196             TOPOLOGIES_TAGS="1_node_single_link_topo"
1197             ;;
1198         "2n_aws")
1199             TOPOLOGIES=( "${TOPOLOGIES_DIR}"/*2n-aws*.yaml )
1200             TOPOLOGIES_TAGS="2_node_single_link_topo"
1201             ;;
1202         "3n_aws")
1203             TOPOLOGIES=( "${TOPOLOGIES_DIR}"/*3n-aws*.yaml )
1204             TOPOLOGIES_TAGS="3_node_single_link_topo"
1205             ;;
1206         "1n_c6gn")
1207             TOPOLOGIES=( "${TOPOLOGIES_DIR}"/*1n-c6gn*.yaml )
1208             TOPOLOGIES_TAGS="1_node_single_link_topo"
1209             ;;
1210         "2n_c6gn")
1211             TOPOLOGIES=( "${TOPOLOGIES_DIR}"/*2n-c6gn*.yaml )
1212             TOPOLOGIES_TAGS="2_node_single_link_topo"
1213             ;;
1214         "3n_c6gn")
1215             TOPOLOGIES=( "${TOPOLOGIES_DIR}"/*3n-c6gn*.yaml )
1216             TOPOLOGIES_TAGS="3_node_single_link_topo"
1217             ;;
1218         "1n_c6in")
1219             TOPOLOGIES=( "${TOPOLOGIES_DIR}"/*1n-c6in*.yaml )
1220             TOPOLOGIES_TAGS="1_node_single_link_topo"
1221             ;;
1222         "2n_c6in")
1223             TOPOLOGIES=( "${TOPOLOGIES_DIR}"/*2n-c6in*.yaml )
1224             TOPOLOGIES_TAGS="2_node_single_link_topo"
1225             ;;
1226         "3n_c6in")
1227             TOPOLOGIES=( "${TOPOLOGIES_DIR}"/*3n-c6in*.yaml )
1228             TOPOLOGIES_TAGS="3_node_single_link_topo"
1229             ;;
1230         *)
1231             # No falling back to default, that should have been done
1232             # by the function which has set NODENESS and FLAVOR.
1233             die "Unknown specification: ${case_text}"
1234     esac
1235
1236     if [[ -z "${TOPOLOGIES-}" ]]; then
1237         die "No applicable topology found!"
1238     fi
1239 }
1240
1241
1242 function set_environment_variables () {
1243
1244     # Depending on testbed topology, overwrite defaults set in the
1245     # resources/libraries/python/Constants.py file
1246     #
1247     # Variables read:
1248     # - TEST_CODE - String affecting test selection, usually jenkins job name.
1249     # Variables set:
1250     # See specific cases
1251
1252     set -exuo pipefail
1253
1254     case "${TEST_CODE}" in
1255         *"1n-aws"* | *"2n-aws"* | *"3n-aws"*)
1256             export TREX_RX_DESCRIPTORS_COUNT=1024
1257             export TREX_EXTRA_CMDLINE="--mbuf-factor 19"
1258             export TREX_CORE_COUNT=6
1259             # Settings to prevent duration stretching.
1260             export PERF_TRIAL_STL_DELAY=0.1
1261             ;;
1262         *"1n-c6gn"* | *"2n-c6gn"* | *"3n-c6gn"*)
1263             export TREX_RX_DESCRIPTORS_COUNT=1024
1264             export TREX_EXTRA_CMDLINE="--mbuf-factor 19"
1265             export TREX_CORE_COUNT=6
1266             # Settings to prevent duration stretching.
1267             export PERF_TRIAL_STL_DELAY=0.1
1268             ;;
1269         *"1n-c6in"* | *"2n-c6in"* | *"3n-c6in"*)
1270             export TREX_RX_DESCRIPTORS_COUNT=1024
1271             export TREX_EXTRA_CMDLINE="--mbuf-factor 19"
1272             export TREX_CORE_COUNT=6
1273             # Settings to prevent duration stretching.
1274             export PERF_TRIAL_STL_DELAY=0.1
1275             ;;
1276         *"2n-zn2"*)
1277             # Maciek's workaround for Zen2 with lower amount of cores.
1278             export TREX_CORE_COUNT=14
1279     esac
1280 }
1281
1282
1283 function untrap_and_unreserve_testbed () {
1284
1285     # Use this as a trap function to ensure testbed does not remain reserved.
1286     # Perhaps call directly before script exit, to free testbed for other jobs.
1287     # This function is smart enough to avoid multiple unreservations (so safe).
1288     # Topo cleanup is executed (call it best practice), ignoring failures.
1289     #
1290     # Hardcoded values:
1291     # - default message to die with if testbed might remain reserved.
1292     # Arguments:
1293     # - ${1} - Message to die with if unreservation fails. Default hardcoded.
1294     # Variables read (by inner function):
1295     # - WORKING_TOPOLOGY - Path to topology yaml file of the reserved testbed.
1296     # - PYTHON_SCRIPTS_DIR - Path to directory holding Python scripts.
1297     # Variables set:
1298     # - TERRAFORM_MODULE_DIR - Terraform module directory.
1299     # - WORKING_TOPOLOGY - Set to empty string on successful unreservation.
1300     # Trap unregistered:
1301     # - EXIT - Failure to untrap is reported, but ignored otherwise.
1302     # Functions called:
1303     # - die - Print to stderr and exit.
1304     # - ansible_playbook - Perform an action using ansible, see ansible.sh
1305
1306     set -xo pipefail
1307     set +eu  # We do not want to exit early in a "teardown" function.
1308     trap - EXIT || echo "Trap deactivation failed, continuing anyway."
1309     wt="${WORKING_TOPOLOGY}"  # Just to avoid too long lines.
1310     if [[ -z "${wt-}" ]]; then
1311         set -eu
1312         warn "Testbed looks unreserved already. Trap removal failed before?"
1313     else
1314         ansible_playbook "cleanup" || true
1315         python3 "${PYTHON_SCRIPTS_DIR}/topo_reservation.py" -c -t "${wt}" || {
1316             die "${1:-FAILED TO UNRESERVE, FIX MANUALLY.}" 2
1317         }
1318         case "${TEST_CODE}" in
1319             *"1n-aws"* | *"2n-aws"* | *"3n-aws"*)
1320                 TERRAFORM_MODULE_DIR="terraform-aws-${NODENESS}-${FLAVOR}-c5n"
1321                 terraform_destroy || die "Failed to call terraform destroy."
1322                 ;;
1323             *"1n-c6gn"* | *"2n-c6gn"* | *"3n-c6gn"*)
1324                 TERRAFORM_MODULE_DIR="terraform-aws-${NODENESS}-${FLAVOR}"
1325                 terraform_destroy || die "Failed to call terraform destroy."
1326                 ;;
1327             *"1n-c6in"* | *"2n-c6in"* | *"3n-c6in"*)
1328                 TERRAFORM_MODULE_DIR="terraform-aws-${NODENESS}-${FLAVOR}"
1329                 terraform_destroy || die "Failed to call terraform destroy."
1330                 ;;
1331             *)
1332                 ;;
1333         esac
1334         WORKING_TOPOLOGY=""
1335         set -eu
1336     fi
1337 }
1338
1339
1340 function warn () {
1341
1342     # Print the message to standard error.
1343     #
1344     # Arguments:
1345     # - ${@} - The text of the message.
1346
1347     set -exuo pipefail
1348
1349     echo "$@" >&2
1350 }