change to released openapi generator

Signed-off-by: xil <fridalu66@gmail.com>

Author: lucy66hw

.github/workflows/backward-compatible-report.yml

@@ -102,14 +102,12 @@ jobs:
           OPENSEARCH_VERSION: ${{ steps.get_opensearch_version.outputs.version }}
         run: npm ci && npm run preprocessing -- --opensearch-version "$OPENSEARCH_VERSION"
 
-      - name: Download openapi-generator JAR
-        run: |
-          curl -L -f -o openapi-generator-cli.jar \
-            https://github.com/opensearch-project/opensearch-protobufs/releases/download/openapi-generator-tool/openapi-generator-cli.jar
-
       - name: Convert protobuf
+        env:
+          OPENAPI_GENERATOR_VERSION: 7.19.0
         run: |
-          java -jar openapi-generator-cli.jar generate -c tools/proto-convert/src/config/protobuf-generator-config.yaml
+          npx --yes @openapitools/openapi-generator-cli generate \
+            -c tools/proto-convert/src/config/protobuf-generator-config.yaml
 
       - name: Check for auto-pr-branch and use its protos if exists
         run: |

.github/workflows/convert-proto.yml

@@ -104,14 +104,12 @@ jobs:
           OPENSEARCH_VERSION: ${{ steps.get_opensearch_version.outputs.version }}
         run: npm ci && npm run preprocessing -- --opensearch-version "$OPENSEARCH_VERSION"
 
-      - name: Download openapi-generator JAR
-        run: |
-          curl -L -f -o openapi-generator-cli.jar \
-            https://github.com/opensearch-project/opensearch-protobufs/releases/download/openapi-generator-tool/openapi-generator-cli.jar
-
       - name: Convert protobuf
+        env:
+          OPENAPI_GENERATOR_VERSION: 7.19.0
         run: |
-          java -jar openapi-generator-cli.jar generate -c tools/proto-convert/src/config/protobuf-generator-config.yaml
+          npx --yes @openapitools/openapi-generator-cli generate \
+            -c tools/proto-convert/src/config/protobuf-generator-config.yaml
 
       - name: Post Process Protobuf
         id: merge_report

CHANGELOG.md

@@ -5,6 +5,7 @@ Inspired from [Keep a Changelog](https://keepachangelog.com/en/1.0.0/)
 ## [Unreleased]
 ### Added
 - Add local Protobuf conversion instructions to README ([#362](https://github.com/opensearch-project/opensearch-protobufs/pull/362))
+- Use official openapi-generator tool ([#364](https://github.com/opensearch-project/opensearch-protobufs/pull/364))
 
 ### Changed
 

DEVELOPER_GUIDE.md

@@ -124,20 +124,15 @@ To generate Protobuf definitions from the latest OpenSearch API specification, f
    npm ci && npm run preprocessing
    ```
 
-3. **Download OpenAPI Generator CLI**
+3. **Generate Protobuf**
 
    ```bash
-   curl -L -f -o openapi-generator-cli.jar \
-     https://github.com/opensearch-project/opensearch-protobufs/releases/download/openapi-generator-tool/openapi-generator-cli.jar
+  export OPENAPI_GENERATOR_VERSION=7.19.0
+  npx @openapitools/openapi-generator-cli generate \
+    -c tools/proto-convert/src/config/protobuf-generator-config.yaml
    ```
 
-4. **Convert to Protobuf**
-
-   ```bash
-   java -jar openapi-generator-cli.jar generate -c tools/proto-convert/src/config/protobuf-generator-config.yaml
-   ```
-
-5. **Run Postprocessing**
+4. **Run Postprocessing**
 
    ```bash
    npm run postprocessing