ci: skip crates.io dep run when releasing (#995)

#993 introduces changes in a sub crate that other Tokio crates depend
on. To make CI pass, a `[patch]` statement and `path` dependencies are
used.

When releasing, these must be removed. However, the commit that
removes them and prepares the crates for release will not be able to
pass CI.

This commit adds a conditional on a special `[ci-release]` snippet in
the commit message. If this exists, CI is only run with the full "patched"
dependencies.

6 files changed, 42 insertions, 1 deletions

diff --git a/.cirrus.yml b/.cirrus.yml
index 4172a50d..d66d5f36 100644
--- a/.cirrus.yml
+++ b/.cirrus.yml
@@ -15,6 +15,18 @@ task:
     - sh rustup.sh -y
     - . $HOME/.cargo/env
     - rustup target add i686-unknown-freebsd
+    - |
+      # Remove any existing patch statements
+      mv Cargo.toml Cargo.toml.bck
+      sed -n '/\[patch.crates-io\]/q;p' Cargo.toml.bck > Cargo.toml
+
+      # Patch all crates
+      cat ci/patch.toml >> Cargo.toml
+
+      # Print `Cargo.toml` for debugging
+      echo "~~~~ Cargo.toml ~~~~"
+      cat Cargo.toml
+      echo "~~~~~~~~~~~~~~~~~~~~"
   cargo_cache:
     folder: $HOME/.cargo/registry
   test_script:
@@ -23,6 +35,7 @@ task:
     - cargo doc --all
   i686_test_script:
     - . $HOME/.cargo/env
-    - cargo test --all --exclude tokio-tls --no-fail-fast --target i686-unknown-freebsd
+    - |
+      cargo test --all --exclude tokio-tls --no-fail-fast --target i686-unknown-freebsd
   before_cache_script:
     - rm -rf $HOME/.cargo/registry/index
diff --git a/ci/azure-cargo-check.yml b/ci/azure-cargo-check.yml
index d386bd6c..b8a3b9e3 100644
--- a/ci/azure-cargo-check.yml
+++ b/ci/azure-cargo-check.yml
@@ -11,6 +11,17 @@ jobs:
     parameters:
       rust_version: ${{ parameters.rust }}
 
+  - template: azure-is-release.yml
+
+  - ${{ each crate in parameters.crates }}:
+    - ${{ each feature in crate.value }}:
+      - script: cargo check ${{ parameters.noDefaultFeatures }} --features ${{ feature }}
+        displayName: Check `${{ crate.key }}`, features = ${{ feature }}
+        workingDirectory: $(Build.SourcesDirectory)/${{ crate.key }}
+        condition: and(succeeded(), not(variables['isRelease']))
+
+  - template: azure-patch-crates.yml
+
   - ${{ each crate in parameters.crates }}:
     - ${{ each feature in crate.value }}:
       - script: cargo check ${{ parameters.noDefaultFeatures }} --features ${{ feature }}
diff --git a/ci/azure-check-minrust.yml b/ci/azure-check-minrust.yml
index de6313c2..7a5e602a 100644
--- a/ci/azure-check-minrust.yml
+++ b/ci/azure-check-minrust.yml
@@ -8,5 +8,7 @@ jobs:
     parameters:
       rust_version: ${{ parameters.rust_version }}
 
+  - template: azure-patch-crates.yml
+
   - script: cargo check --all
     displayName: cargo check --all
diff --git a/ci/azure-cross-compile.yml b/ci/azure-cross-compile.yml
index 79606bb4..857aeb94 100644
--- a/ci/azure-cross-compile.yml
+++ b/ci/azure-cross-compile.yml
@@ -14,6 +14,9 @@ jobs:
   - script: rustup target add ${{ parameters.target }}
     displayName: "Add target"
 
+  # Always patch
+  - template: azure-patch-crates.yml
+
   - script: cargo check --all --exclude tokio-tls --target ${{ parameters.target }}
     displayName: Check source
 
diff --git a/ci/azure-is-release.yml b/ci/azure-is-release.yml
new file mode 100644
index 00000000..014b7a98
--- /dev/null
+++ b/ci/azure-is-release.yml
@@ -0,0 +1,9 @@
+steps:
+  - bash: |
+      set -e
+
+      if git log --no-merges -1 --format='%s' | grep -q '[ci-release]'; then
+        echo "##vso[task.setvariable variable=isRelease]true"
+      fi
+    failOnStderr: true
+    displayName: Check if release commit
diff --git a/ci/azure-test-stable.yml b/ci/azure-test-stable.yml
index c385be26..cd4f8cf9 100644
--- a/ci/azure-test-stable.yml
+++ b/ci/azure-test-stable.yml
@@ -19,6 +19,8 @@ jobs:
     parameters:
       rust_version: stable
 
+  - template: azure-is-release.yml
+
   - ${{ each crate in parameters.crates }}:
     - script: cargo test
       env:
@@ -26,6 +28,7 @@ jobs:
         CI: 'True'
       displayName: cargo test -p ${{ crate }}
       workingDirectory: $(Build.SourcesDirectory)/${{ crate }}
+      condition: and(succeeded(), not(variables['isRelease']))
 
   - template: azure-patch-crates.yml