Add CI check for consistency on the Consensus changelog management

.github/workflows/consensus-changelog-consistency.yml

@@ -0,0 +1,19 @@
+name: Consensus changelog sanity check
+
+on:
+  push:
+
+jobs:
+  build:
+    runs-on: ubuntu-latest
+
+    defaults:
+      run:
+        shell: bash
+
+    steps:
+
+    - uses: actions/checkout@v3
+
+    - name: "Check changelog consistency"
+      run: ./scripts/ci/check-consensus-release.sh

scripts/ci/check-consensus-release.sh

@@ -0,0 +1,61 @@
+#!/usr/bin/env bash
+
+# For each one of the two bundles, check that:
+# (1) if the version in the cabal file was changed in any of the packages
+# (2) then it was changed on all of them
+# (3) and to the same value
+# (4) and also there are no remaining changelog entries
+# otherwise exits with exit code 1
+
+cardano_packages=$(find . -maxdepth 1 -type d -name "ouroboros-consensus-cardano*" -or -name "ouroboros-consensus-shelley*" -or -name "ouroboros-consensus-byron*")
+cardano_versions=$(for f in $cardano_packages; do
+                       git diff $(ls $f/*.cabal) | grep "+version"
+                   done)
+
+consensus_packages=$(find . -maxdepth 1 -type d -name "ouroboros-consensus*" -not -name "*byron*" -not -name "*shelley*" -not -name "*cardano*")
+consensus_versions=$(for f in $consensus_packages; do
+                         git diff $(ls $f/*.cabal) | grep "+version"
+                     done)
+
+if [ -z "$consensus_versions" ]; then # See (1) above
+    echo "ouroboros-consensus version not updated"
+else
+    if [ $(echo "$consensus_versions" | wc -l) != $(echo "$consensus_packages" | wc -l) ]; then  # See (2) above
+        echo "Some packages in ouroboros-consensus bundle are being updated and others not."
+        exit 1
+    else
+        if [ $(echo "$consensus_versions" | sort | uniq | wc -l) != 1 ]; then  # See (3) above
+            echo "Inconsistent versioning of the ouroboros-consensus bundle."
+            exit 1
+        else
+            if [ $(ls -l ouroboros-consensus/changelog.d | wc -l) != 2 ]; then # See (4) above
+                echo "Tried to release for ouroboros-consensus but there are remaining changelog files."
+                exit 1
+            else
+                echo "ouroboros-consensus version succesfully updated"
+            fi
+        fi
+    fi
+fi
+
+
+if [ -z "$cardano_versions" ]; then # See (1) above
+    echo "ouroboros-consensus-cardano version not updated"
+else
+    if [ $(echo "$cardano_versions" | wc -l) != $(echo "$cardano_packages" | wc -l) ]; then # See (2) above
+        echo "Some packages in ouroboros-consensus-cardano bundle are being updated and others not."
+        exit 1
+    else
+        if [ $(echo "$cardano_versions" | sort | uniq | wc -l) != 1 ]; then # See (3) above
+            echo "Inconsistent versioning of the ouroboros-consensus-cardano bundle."
+            exit 1
+        else
+            if [ $(ls -l ouroboros-consensus-cardano/changelog.d | wc -l) != 2 ]; then # See (4) above
+                echo "Tried to release for ouroboros-consensus-cardano but there are remaining changelog files."
+                exit 1
+            else
+                echo "ouroboros-consensus-cardano version succesfully updated"
+            fi
+        fi
+    fi
+fi