From fb7f8413a9efa136e73911e56f9970d8289ee178 Mon Sep 17 00:00:00 2001
From: Andres Freund <andres@anarazel.de>
Date: Sun, 2 Oct 2022 11:26:19 -0700
Subject: [PATCH v1] ci: Introduce a SanityCheck task that other tasks depend
 on

---
 .cirrus.yml | 94 +++++++++++++++++++++++++++++++++++++++++++++++++----
 1 file changed, 87 insertions(+), 7 deletions(-)

diff --git a/.cirrus.yml b/.cirrus.yml
index 531cfe96f65..87dc7025eaf 100644
--- a/.cirrus.yml
+++ b/.cirrus.yml
@@ -55,6 +55,83 @@ on_failure_meson: &on_failure_meson
     type: text/plain
 
 
+# To avoid unnecessarily spinning up a lot of VMs / containers for entirely
+# broken commits, have a very minimal test that all others depend on.
+task:
+  name: SanityCheck
+
+  # If a specific OS is requested, don't run the sanity check. This shortens
+  # push-wait-for-ci cycles a bit when debugging operating system specific
+  # failures.
+  only_if: $CIRRUS_CHANGE_MESSAGE !=~ '.*\nci-os-only:.*'
+
+  env:
+    CPUS: 4
+    BUILD_JOBS: 8
+    TEST_JOBS: 8
+    CCACHE_DIR: ${CIRRUS_WORKING_DIR}/ccache_dir
+    # no options enabled, should be small
+    CCACHE_MAXSIZE: "150M"
+
+  container:
+    image: $CONTAINER_REPO/linux_debian_bullseye_ci:latest
+    cpu: $CPUS
+
+  ccache_cache:
+    folder: $CCACHE_DIR
+
+  create_user_script: |
+    useradd -m postgres
+    chown -R postgres:postgres .
+    mkdir -p ${CCACHE_DIR}
+    chown -R postgres:postgres ${CCACHE_DIR}
+    echo '* - memlock 134217728' > /etc/security/limits.d/postgres.conf
+    su postgres -c "ulimit -l -H && ulimit -l -S"
+    # Can't change container's kernel.core_pattern. Postgres user can't write
+    # to / normally. Change that.
+    chown root:postgres /
+    chmod g+rwx /
+
+  configure_script: |
+    su postgres <<-EOF
+      meson setup \
+        --buildtype=debug \
+        --auto-features=disabled \
+        -Dtap_tests=enabled \
+        build
+    EOF
+  build_script: |
+    su postgres <<-EOF
+      set -e
+      ccache -s
+      ccache -z
+      ninja -C build -j${BUILD_JOBS}
+      ccache -s
+    EOF
+  upload_caches: ccache
+
+  # Run a minimal set of tests. The main regression tests take too long for
+  # this purpose. I chose a random pg_regress style test, and a tap test that
+  # exercises both a frontend binary and the backend.
+  test_minimal_script: |
+    su postgres <<-EOF
+      ulimit -c unlimited
+      meson test $MTEST_ARGS --num-processes ${TEST_JOBS} \
+        tmp_install cube/regress pg_ctl/001_start_stop
+    EOF
+
+  on_failure:
+    <<: *on_failure_meson
+    cores_script: |
+      shopt -s nullglob
+      mkdir -m 770 /tmp/cores
+      ls -l /
+      if [ -n "$(echo /core*)" ] ; then
+        mv /core* /tmp/cores/
+        src/tools/ci/cores_backtrace.sh linux /tmp/cores
+      fi
+
+
 task:
   name: FreeBSD - 13 - Meson
 
@@ -69,6 +146,7 @@ task:
     CPPFLAGS: -DRELCACHE_FORCE_RELEASE -DCOPY_PARSE_PLAN_TREES -DWRITE_READ_PARSE_PLAN_TREES -DRAW_EXPRESSION_COVERAGE_TEST
     CFLAGS: -Og -ggdb
 
+  depends_on: SanityCheck
   only_if: $CIRRUS_CHANGE_MESSAGE !=~ '.*\nci-os-only:.*' || $CIRRUS_CHANGE_MESSAGE =~ '.*\nci-os-only:[^\n]*freebsd.*'
 
   compute_engine_instance:
@@ -170,6 +248,7 @@ task:
     LINUX_CONFIGURE_FEATURES: *LINUX_CONFIGURE_FEATURES
     LINUX_MESON_FEATURES: *LINUX_MESON_FEATURES
 
+  depends_on: SanityCheck
   only_if: $CIRRUS_CHANGE_MESSAGE !=~ '.*\nci-os-only:.*' || $CIRRUS_CHANGE_MESSAGE =~ '.*\nci-os-only:[^\n]*linux.*'
 
   compute_engine_instance:
@@ -311,6 +390,7 @@ task:
     CFLAGS: -Og -ggdb
     CXXFLAGS: -Og -ggdb
 
+  depends_on: SanityCheck
   only_if: $CIRRUS_CHANGE_MESSAGE !=~ '.*\nci-os-only:.*' || $CIRRUS_CHANGE_MESSAGE =~ '.*\nci-os-only:[^\n]*(macos|darwin|osx).*'
 
   osx_instance:
@@ -428,6 +508,7 @@ task:
     # 0x8001 is SEM_FAILCRITICALERRORS | SEM_NOOPENFILEERRORBOX
     CIRRUS_WINDOWS_ERROR_MODE: 0x8001
 
+  depends_on: SanityCheck
   only_if: $CIRRUS_CHANGE_MESSAGE !=~ '.*\nci-os-only:.*' || $CIRRUS_CHANGE_MESSAGE =~ '.*\nci-os-only:[^\n]*windows.*'
 
   windows_container:
@@ -467,9 +548,12 @@ task:
 task:
   name: CompilerWarnings
 
-  # To limit unnecessary work only run this once the normal linux test succeeds
-  depends_on:
-    - Linux - Debian Bullseye - Meson
+  # To limit unnecessary work only run this once the SanityCheck
+  # succeeds. This is particularly important for this task as we intentionally
+  # use always: to continue after failures. Task that did not run count as a
+  # success, so we need to recheck SanityChecks's condition here ...
+  depends_on: SanityCheck
+  only_if: $CIRRUS_CHANGE_MESSAGE !=~ '.*\nci-os-only:.*'
 
   env:
     CPUS: 4
@@ -483,10 +567,6 @@ task:
     LINUX_CONFIGURE_FEATURES: *LINUX_CONFIGURE_FEATURES
     LINUX_MESON_FEATURES: *LINUX_MESON_FEATURES
 
-  # task that did not run, count as a success, so we need to recheck Linux'
-  # condition here ...
-  only_if: $CIRRUS_CHANGE_MESSAGE !=~ '.*\nci-os-only:.*' || $CIRRUS_CHANGE_MESSAGE =~ '.*\nci-os-only:[^\n]*linux.*'
-
   container:
     image: $CONTAINER_REPO/linux_debian_bullseye_ci:latest
     cpu: $CPUS
-- 
2.37.3.542.gdd3f6c4cae