chore: check table-test jar downloaded through mirror

Author: bric3

.gitlab-ci.yml

@@ -218,6 +218,61 @@ default:
 # Check and fail early if maven central credentials are incorrect. When a new token is generated
 # on the central publisher portal, it invalidates the old one. This check prevents going further.
 # See https://datadoghq.atlassian.net/wiki/x/Oog5OgE
+check-maven-proxy-artifact:
+  image: ${BUILDER_IMAGE_REPO}:${BUILDER_IMAGE_VERSION_PREFIX}base
+  stage: .pre
+  rules:
+    - when: on_success
+  script:
+    - |
+      check_jar() {
+        local label="$1" file="$2"
+        echo "--- Checking: ${label} ---"
+        local size
+        size=$(wc -c < "${file}")
+        echo "File size: ${size} bytes"
+        if [ "${size}" -eq 0 ]; then
+          echo "ERROR: file is empty"
+          return 1
+        fi
+        local magic
+        magic=$(head -c 4 "${file}" | od -A n -t x1 | tr -d ' \n')
+        local type
+        type=$(file "${file}")
+        echo "File magic bytes: ${magic}  |  file: ${type}"
+        if [ "${magic}" = "504b0304" ]; then
+          echo "OK: valid JAR/ZIP magic bytes"
+        else
+          echo "ERROR: not a valid JAR/ZIP file (expected 504b0304, got ${magic})"
+          if echo "${type}" | grep -qi "xml\|html\|text"; then
+            echo "--- File content ---"
+            cat "${file}"
+            echo "--- End of content ---"
+          fi
+          return 1
+        fi
+      }
+
+      ARTIFACT_PATH="org/tabletest/tabletest-junit/1.2.0/tabletest-junit-1.2.0.jar"
+      RESULT=0
+
+      echo "=== Downloading from Magic Mirror proxy ==="
+      curl --fail --location --silent --show-error --output tabletest-junit-proxy.jar "${MAVEN_REPOSITORY_PROXY}${ARTIFACT_PATH}" \
+        && check_jar "proxy" tabletest-junit-proxy.jar \
+        || RESULT=1
+
+      echo "=== Downloading from Maven Central ==="
+      curl --fail --location --silent --show-error --output tabletest-junit-central.jar "https://repo1.maven.org/maven2/${ARTIFACT_PATH}" \
+        && check_jar "central" tabletest-junit-central.jar \
+        || RESULT=1
+
+      exit $RESULT
+  artifacts:
+    when: always
+    paths:
+      - tabletest-junit-proxy.jar
+      - tabletest-junit-central.jar
+
 maven-central-pre-release-check:
   image: ${BUILDER_IMAGE_REPO}:${BUILDER_IMAGE_VERSION_PREFIX}base
   stage: .pre