# FIXME(linux): need to configure core dumps, enable them, and then dump
# backtraces on failure from all core dumps:
#
# - bash: sudo apt install gdb
# - bash: sudo sh -c 'echo "/checkout/obj/cores/core.%p.%E" > /proc/sys/kernel/core_pattern'
#
# Check travis config for `gdb --batch` command to print all crash logs

parameters:
  # When this parameter is set to anything other than an empty string the tests
  # will only be executed when the commit updates submodules
  only_on_updated_submodules: ''

steps:

# Disable automatic line ending conversion, which is enabled by default on
# Azure's Windows image. Having the conversion enabled caused regressions both
# in our test suite (it broke miri tests) and in the ecosystem, since we
# started shipping install scripts with CRLF endings instead of the old LF.
#
# Note that we do this a couple times during the build as the PATH and current
# user/directory change, e.g. when mingw is enabled.
- bash: git config --global core.autocrlf false
  displayName: "Disable git automatic line ending conversion"

- checkout: self
  fetchDepth: 2

# Set the SKIP_JOB environment variable if this job is supposed to only run
# when submodules are updated and they were not. The following time consuming
# tasks will be skipped when the environment variable is present.
- ${{ if parameters.only_on_updated_submodules }}:
  - bash: |
      set -e
      # Submodules pseudo-files inside git have the 160000 permissions, so when
      # those files are present in the diff a submodule was updated.
      if git diff HEAD^ | grep "^index .* 160000" >/dev/null 2>&1; then
          echo "Executing the job since submodules are updated"
      else
          echo "Not executing this job since no submodules were updated"
          echo "##vso[task.setvariable variable=SKIP_JOB;]1"
      fi
    displayName: Decide whether to run this job

# Spawn a background process to collect CPU usage statistics which we'll upload
# at the end of the build. See the comments in the script here for more
# information.
- bash: python src/ci/cpu-usage-over-time.py &> cpu-usage.csv &
  displayName: "Collect CPU-usage statistics in the background"

- bash: printenv | sort
  displayName: Show environment variables

- bash: |
    set -e
    df -h
    du . | sort -nr | head -n100
  displayName: Show disk usage
  # FIXME: this hasn't been tested, but maybe it works on Windows? Should test!
  condition: and(succeeded(), ne(variables['Agent.OS'], 'Windows_NT'))

- template: install-sccache.yml
- template: install-clang.yml

# Switch to XCode 9.3 on OSX since it seems to be the last version that supports
# i686-apple-darwin. We'll eventually want to upgrade this and it will probably
# force us to drop i686-apple-darwin, but let's keep the wheels turning for now.
- bash: |
    set -e
    sudo xcode-select --switch /Applications/Xcode_9.3.app
  displayName: Switch to Xcode 9.3 (OSX)
  condition: and(succeeded(), eq(variables['Agent.OS'], 'Darwin'))

- template: install-windows-build-deps.yml

# Looks like docker containers have IPv6 disabled by default, so let's turn it
# on since libstd tests require it
- bash: |
    set -e
    sudo mkdir -p /etc/docker
    echo '{"ipv6":true,"fixed-cidr-v6":"fd9a:8454:6789:13f7::/64"}' | sudo tee /etc/docker/daemon.json
    sudo service docker restart
  displayName: Enable IPv6
  condition: and(succeeded(), not(variables.SKIP_JOB), eq(variables['Agent.OS'], 'Linux'))

# Disable automatic line ending conversion (again). On Windows, when we're
# installing dependencies, something switches the git configuration directory or
# re-enables autocrlf. We've not tracked down the exact cause -- and there may
# be multiple -- but this should ensure submodules are checked out with the
# appropriate line endings.
- bash: git config --replace-all --global core.autocrlf false
  displayName: "Disable git automatic line ending conversion"

# Check out all our submodules, but more quickly than using git by using one of
# our custom scripts
- bash: |
    set -e
    mkdir -p $HOME/rustsrc
    $BUILD_SOURCESDIRECTORY/src/ci/init_repo.sh . $HOME/rustsrc
  condition: and(succeeded(), not(variables.SKIP_JOB), ne(variables['Agent.OS'], 'Windows_NT'))
  displayName: Check out submodules (Unix)
- script: |
    if not exist C:\cache\rustsrc\NUL mkdir C:\cache\rustsrc
    sh src/ci/init_repo.sh . /c/cache/rustsrc
  condition: and(succeeded(), not(variables.SKIP_JOB), eq(variables['Agent.OS'], 'Windows_NT'))
  displayName: Check out submodules (Windows)

# See also the disable for autocrlf above, this just checks that it worked
#
# We check both in rust-lang/rust and in a submodule to make sure both are
# accurate. Submodules are checked out significantly later than the main
# repository in this script, so settings can (and do!) change between then.
#
# Linux (and maybe macOS) builders don't currently have dos2unix so just only
# run this step on Windows.
- bash: |
    set -x
    # print out the git configuration so we can better investigate failures in
    # the following
    git config --list --show-origin
    dos2unix -ih Cargo.lock src/tools/rust-installer/install-template.sh
    endings=$(dos2unix -ic Cargo.lock src/tools/rust-installer/install-template.sh)
    # if endings has non-zero length, error out
    if [ -n "$endings" ]; then exit 1 ; fi
  condition: and(succeeded(), eq(variables['Agent.OS'], 'Windows_NT'))
  displayName: Verify line endings are LF

# Ensure the `aws` CLI is installed so we can deploy later on, cache docker
# images, etc.
- bash: src/ci/install-awscli.sh
  env:
    AGENT_OS: $(Agent.OS)
  condition: and(succeeded(), not(variables.SKIP_JOB))
  displayName: Install awscli

# Configure our CI_JOB_NAME variable which log analyzers can use for the main
# step to see what's going on.
- bash: |
    builder=$(echo $AGENT_JOBNAME | cut -d ' ' -f 2)
    echo "##vso[task.setvariable variable=CI_JOB_NAME]$builder"
  displayName: Configure Job Name

# As a quick smoke check on the otherwise very fast mingw-check linux builder
# check our own internal scripts.
- bash: |
    set -e
    git clone --depth=1 https://github.com/rust-lang-nursery/rust-toolstate.git
    cd rust-toolstate
    python2.7 "$BUILD_SOURCESDIRECTORY/src/tools/publish_toolstate.py" "$(git rev-parse HEAD)" "$(git log --format=%s -n1 HEAD)" "" ""
    cd ..
    rm -rf rust-toolstate
  condition: and(succeeded(), not(variables.SKIP_JOB), eq(variables['IMAGE'], 'mingw-check'))
  displayName: Verify the publish_toolstate script works

- bash: |
    set -e
    # Remove any preexisting rustup installation since it can interfere
    # with the cargotest step and its auto-detection of things like Clippy in
    # the environment
    rustup self uninstall -y || true
    if [ "$IMAGE" = "" ]; then
      src/ci/run.sh
    else
      src/ci/docker/run.sh $IMAGE
    fi
  #timeoutInMinutes: 180
  timeoutInMinutes: 600
  env:
    CI: true
    SRC: .
    AWS_SECRET_ACCESS_KEY: $(AWS_SECRET_ACCESS_KEY)
    TOOLSTATE_REPO_ACCESS_TOKEN: $(TOOLSTATE_REPO_ACCESS_TOKEN)
  condition: and(succeeded(), not(variables.SKIP_JOB))
  displayName: Run build

# If we're a deploy builder, use the `aws` command to publish everything to our
# bucket.
- bash: |
    set -e
    source src/ci/shared.sh
    if [ "$AGENT_OS" = "Linux" ]; then
        rm -rf obj/build/dist/doc
        upload_dir=obj/build/dist
    else
        rm -rf build/dist/doc
        upload_dir=build/dist
    fi
    ls -la $upload_dir
    deploy_dir=rustc-builds
    if [ "$DEPLOY_ALT" == "1" ]; then
        deploy_dir=rustc-builds-alt
    fi
    retry aws s3 cp --no-progress --recursive --acl public-read ./$upload_dir s3://$DEPLOY_BUCKET/$deploy_dir/$BUILD_SOURCEVERSION
  env:
    AWS_SECRET_ACCESS_KEY: $(AWS_SECRET_ACCESS_KEY)
  condition: and(succeeded(), not(variables.SKIP_JOB), or(eq(variables.DEPLOY, '1'), eq(variables.DEPLOY_ALT, '1')))
  displayName: Upload artifacts

# Upload CPU usage statistics that we've been gathering this whole time. Always
# execute this step in case we want to inspect failed builds, but don't let
# errors here ever fail the build since this is just informational.
- bash: aws s3 cp --acl public-read cpu-usage.csv s3://$DEPLOY_BUCKET/rustc-builds/$BUILD_SOURCEVERSION/cpu-$CI_JOB_NAME.csv
  env:
    AWS_SECRET_ACCESS_KEY: $(AWS_SECRET_ACCESS_KEY)
  condition: variables['AWS_SECRET_ACCESS_KEY']
  continueOnError: true
  displayName: Upload CPU usage statistics