[Rust] Use query and form features from reqwest-middleware

.devcontainer/devcontainer.json

@@ -13,7 +13,7 @@
     "ghcr.io/snebjorn/devcontainer-feature/chromium:latest": {},
     "ghcr.io/devcontainers/features/docker-in-docker:2": {
       "version": "latest",
-      "moby": true
+      "moby": false
     }
   },
   // Configure tool-specific properties.

.github/workflows/mill-plugin-tests.yaml

@@ -0,0 +1,69 @@
+name: Mill plugin tests
+
+on:
+  push:
+    paths:
+      - modules/openapi-generator-mill-plugin/**
+  pull_request:
+    paths:
+      - modules/openapi-generator-mill-plugin/**
+
+jobs:
+  test:
+    name: Mill plugin tests
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v5
+      - name: Set up JDK 11
+        uses: actions/setup-java@v5
+        with:
+          java-version: 11
+          distribution: 'temurin'
+      - name: Restore cache (read-only)
+        # only use restore keys, no save key because we need to clear the cache before running the examples
+        uses: actions/cache/restore@v5
+        with:
+          path: |
+            ~/.m2/repository
+            ~/.gradle
+            ~/.cache/coursier
+            !~/.gradle/caches/*/plugin-resolution/
+            !~/.m2/repository/org/openapitools/
+            !~/.cache/coursier/v1/https/repo1.maven.org/maven2/org/openapitools/
+          key: ${{ runner.os }}-build-${{ env.cache-name }}-${{ hashFiles('**/pom.xml') }}
+
+      - name: Maven Clean Install
+        env:
+          GRADLE_ENTERPRISE_ACCESS_KEY: ${{ secrets.GRADLE_ENTERPRISE_ACCESS_KEY }}
+        run: |
+          ./mvnw clean install -DskipTests -Dmaven.javadoc.skip=true
+
+      # This is needed because of differences in how Maven and Coursier download artifacts
+      # Maven will only download the pom when the transitive dependency is not needed in the current projects compile classpath
+      # whereas Coursier expects the artifact (jar) to be present in a Maven repository. When Coursier encounters a
+      # artifact folder with a pom it considers the artifact to be available and will then crash when the jar is missing.
+      - name: Clear m2 cache except openapitools (because otherwise coursier will fail to resolve artifacts where only poms are downloaded)
+        run: |
+          mv ~/.m2/repository/org/openapitools /tmp/openapitools-backup || true
+          rm -rf ~/.m2/repository/*
+          mkdir -p ~/.m2/repository/org
+          mv /tmp/openapitools-backup ~/.m2/repository/org/openapitools || true
+
+      - name: Mill Example - Test Validation Command
+        env:
+          GRADLE_ENTERPRISE_ACCESS_KEY: ${{ secrets.GRADLE_ENTERPRISE_ACCESS_KEY }}
+        run: |
+          (cd modules/openapi-generator-mill-plugin/example/ && ./mill validateOpenapiSpec $(pwd)/api/petstore-invalid.yaml)
+
+      - name: Mill Example - Test Validation Task
+        env:
+          GRADLE_ENTERPRISE_ACCESS_KEY: ${{ secrets.GRADLE_ENTERPRISE_ACCESS_KEY }}
+        run: |
+          (cd modules/openapi-generator-mill-plugin/example/ && ./mill openapi.validate)
+
+      - name: Mill Example - Test Compile Task
+        env:
+          GRADLE_ENTERPRISE_ACCESS_KEY: ${{ secrets.GRADLE_ENTERPRISE_ACCESS_KEY }}
+        run: |
+          (cd modules/openapi-generator-mill-plugin/example/ && ./mill __.compile)
+

.github/workflows/samples-aspnet-fastenpoints-server.yaml

@@ -26,7 +26,7 @@ jobs:
           - samples/server/petstore/aspnet/fastendpoints-useValidators
     steps:
       - uses: actions/checkout@v5
-      - uses: actions/setup-dotnet@v5.0.1
+      - uses: actions/setup-dotnet@v5.1.0
         with:
           dotnet-version: '8.0.x'
       - name: Build

.github/workflows/samples-dotnet-petstore.yml

@@ -26,7 +26,7 @@ jobs:
           - samples/client/petstore/csharp/restsharp/standard2.0/Petstore/
     steps:
       - uses: actions/checkout@v5
-      - uses: actions/setup-dotnet@v5.0.1
+      - uses: actions/setup-dotnet@v5.1.0
         with:
           dotnet-version: '7.0.x'
       - name: Build

.github/workflows/samples-dotnet-standard.yaml

@@ -28,7 +28,7 @@ jobs:
           # - samples/client/petstore/csharp/unityWebRequest/standard2.0/Petstore/
     steps:
       - uses: actions/checkout@v5
-      - uses: actions/setup-dotnet@v5.0.1
+      - uses: actions/setup-dotnet@v5.1.0
         with:
           dotnet-version: 3.1.*
       - name: Build

.github/workflows/samples-dotnet10.yaml

@@ -48,7 +48,7 @@ jobs:
           # - samples/client/petstore/csharp/unityWebRequest/net10/Petstore
     steps:
       - uses: actions/checkout@v5
-      - uses: actions/setup-dotnet@v5.0.1
+      - uses: actions/setup-dotnet@v5.1.0
         with:
           dotnet-version: '10.x'
       - name: Build

.github/workflows/samples-dotnet6-server.yaml

@@ -25,7 +25,7 @@ jobs:
           - samples/server/petstore/aspnetcore-6.0-useSwashBuckle
     steps:
       - uses: actions/checkout@v5
-      - uses: actions/setup-dotnet@v5.0.1
+      - uses: actions/setup-dotnet@v5.1.0
         with:
           dotnet-version: '6.0.x'
       - name: Build

.github/workflows/samples-dotnet7-client.yml

@@ -43,7 +43,7 @@ jobs:
           - samples/client/petstore/csharp/restsharp/standard2.0/ConditionalSerialization/
     steps:
       - uses: actions/checkout@v5
-      - uses: actions/setup-dotnet@v5.0.1
+      - uses: actions/setup-dotnet@v5.1.0
         with:
           dotnet-version: '7.0.x'
       - name: Build

.github/workflows/samples-dotnet8-client-echo-api.yaml

@@ -19,7 +19,7 @@ jobs:
           - samples/client/echo_api/csharp/restsharp/net8/EchoApi
     steps:
       - uses: actions/checkout@v5
-      - uses: actions/setup-dotnet@v5.0.1
+      - uses: actions/setup-dotnet@v5.1.0
         with:
           dotnet-version: '8.0.x'
       - name: Run echo server

.github/workflows/samples-dotnet8-client.yaml

@@ -19,7 +19,7 @@ jobs:
           - samples/client/petstore/csharp/restsharp/net8/useVirtualForHooks/
     steps:
       - uses: actions/checkout@v5
-      - uses: actions/setup-dotnet@v5.0.1
+      - uses: actions/setup-dotnet@v5.1.0
         with:
           dotnet-version: '8.0.x'
       - name: Build

.github/workflows/samples-dotnet8-server.yaml

@@ -26,7 +26,7 @@ jobs:
           - samples/server/petstore/aspnetcore-8.0-use-centralized-package-version-management
     steps:
       - uses: actions/checkout@v5
-      - uses: actions/setup-dotnet@v5.0.1
+      - uses: actions/setup-dotnet@v5.1.0
         with:
           dotnet-version: '8.0.x'
       - name: Build

.github/workflows/samples-dotnet8.yaml

@@ -34,7 +34,7 @@ jobs:
           - samples/client/petstore/csharp/generichost/net8/UseDateTimeForDate
     steps:
       - uses: actions/checkout@v5
-      - uses: actions/setup-dotnet@v5.0.1
+      - uses: actions/setup-dotnet@v5.1.0
         with:
           dotnet-version: '8.0.x'
       - name: Build

.github/workflows/samples-dotnet9.yaml

@@ -41,7 +41,7 @@ jobs:
           #- samples/client/petstore/csharp/unityWebRequest/net9/Petstore
     steps:
       - uses: actions/checkout@v5
-      - uses: actions/setup-dotnet@v5.0.1
+      - uses: actions/setup-dotnet@v5.1.0
         with:
           dotnet-version: '9.0.x'
       - name: Build

.github/workflows/samples-java-client-jdk17.yaml

@@ -7,6 +7,7 @@ on:
       - samples/client/petstore/java/webclient-jakarta/**
       - samples/client/petstore/java/restclient-*/**
       - samples/client/others/java/webclient-sealedInterface/**
+      - samples/client/others/java/webclient-sealedInterface_3_1/**
       - samples/client/petstore/java/webclient-useSingleRequestParameter/**
       - samples/client/others/java/restclient-enum-in-multipart/**
   pull_request:
@@ -15,6 +16,7 @@ on:
       - samples/client/petstore/java/webclient-jakarta/**
       - samples/client/petstore/java/restclient-*/**
       - samples/client/others/java/webclient-sealedInterface/**
+      - samples/client/others/java/webclient-sealedInterface_3_1/**
       - samples/client/petstore/java/webclient-useSingleRequestParameter/**
       - samples/client/others/java/restclient-enum-in-multipart/**
 jobs:
@@ -34,6 +36,7 @@ jobs:
           - samples/client/petstore/java/restclient-useSingleRequestParameter
           - samples/client/petstore/java/restclient-useSingleRequestParameter-static
           - samples/client/others/java/webclient-sealedInterface
+          - samples/client/others/java/webclient-sealedInterface_3_1
           - samples/client/petstore/java/webclient-useSingleRequestParameter
           - samples/client/others/java/restclient-enum-in-multipart
     steps:

.github/workflows/samples-java-play-framework.yaml

@@ -23,7 +23,7 @@ jobs:
           - samples/server/petstore/java-play-framework-fake-endpoints
           - samples/server/petstore/java-play-framework-fake-endpoints-with-security
           - samples/server/petstore/java-play-framework-no-bean-validation
-          - samples/server/petstore/java-play-framework-no-exception-handling
+          - samples/server/petstore/java-play-framework-no-excp-handling
           - samples/server/petstore/java-play-framework-no-interface
           - samples/server/petstore/java-play-framework-no-nullable
           - samples/server/petstore/java-play-framework-no-swagger-ui

.github/workflows/samples-r.yaml

@@ -0,0 +1,69 @@
+name: Samples R clients
+
+on:
+  push:
+    paths:
+      - samples/client/petstore/R/**
+      - samples/client/petstore/R-httr2/**
+      - samples/client/petstore/R-httr2-wrapper/**
+  pull_request:
+    paths:
+      - samples/client/petstore/R/**
+      - samples/client/petstore/R-httr2/**
+      - samples/client/petstore/R-httr2-wrapper/**
+jobs:
+  build:
+    name: Build R projects
+    runs-on: ubuntu-latest
+    strategy:
+      fail-fast: false
+      matrix:
+        sample:
+          # clients
+          - samples/client/petstore/R/
+          - samples/client/petstore/R-httr2/
+          - samples/client/petstore/R-httr2-wrapper/
+    services:
+      petstore-api:
+        image: swaggerapi/petstore
+        ports:
+          - 80:8080
+        env:
+          SWAGGER_HOST: http://petstore.swagger.io
+          SWAGGER_BASE_PATH: /v2
+    steps:
+      - uses: actions/checkout@v5
+      - name: Add hosts to /etc/hosts
+        run: |
+            sudo echo "127.0.0.1 petstore.swagger.io" | sudo tee -a /etc/hosts
+      - uses: r-lib/actions/setup-r@v2
+        with:
+          use-public-rspm: true
+
+      - name: Install devtools
+        run: install.packages("devtools")
+        shell: Rscript {0}
+        working-directory: ${{ matrix.sample }}
+
+      - name: Build 
+        run: devtools::build()
+        shell: Rscript {0}
+        working-directory: ${{ matrix.sample }}
+
+      - uses: r-lib/actions/setup-r-dependencies@v2
+        with:
+          working-directory: ${{ matrix.sample }}
+          extra-packages: any::rcmdcheck
+          needs: check
+
+      - uses: r-lib/actions/check-r-package@v2
+        with:
+          working-directory: ${{ matrix.sample }}
+          upload-snapshots: true
+          build_args: 'c("--no-manual","--compact-vignettes=gs+qpdf")'
+          error-on: '"error"'
+
+      - name: Install local package
+        run: R CMD INSTALL .
+        shell: bash # Ensure correct shell for command execution
+        working-directory: ${{ matrix.sample }}

.github/workflows/samples-spring.yaml

@@ -42,7 +42,7 @@ jobs:
           - samples/openapi3/server/petstore/springboot-delegate
           - samples/openapi3/server/petstore/spring-boot-oneof
           - samples/server/petstore/spring-boot-nullable-set
-          - samples/server/petstore/spring-boot-defaultInterface-unhandledException
+          - samples/server/petstore/spring-boot-defaultInterface-unhandledExcp
           - samples/server/petstore/springboot
           - samples/server/petstore/springboot-beanvalidation
           - samples/server/petstore/springboot-builtin-validation

.github/workflows/samples-typescript-client.yaml

@@ -15,6 +15,7 @@ on:
       - samples/client/petstore/typescript-angular-v18-provided-in-root/**
       - samples/client/petstore/typescript-angular-v19-provided-in-root/**
       - samples/client/petstore/typescript-angular-v20-provided-in-root/**
+      - samples/client/petstore/typescript-angular-v21-provided-in-root/**
       - samples/openapi3/client/petstore/typescript/builds/default/**
       # comment out due to build failure
       #- samples/openapi3/client/petstore/typescript/tests/default/**
@@ -54,6 +55,7 @@ on:
       - samples/client/petstore/typescript-angular-v18-provided-in-root/**
       - samples/client/petstore/typescript-angular-v19-provided-in-root/**
       - samples/client/petstore/typescript-angular-v20-provided-in-root/**
+      - samples/client/petstore/typescript-angular-v21-provided-in-root/**
       - samples/openapi3/client/petstore/typescript/builds/default/**
       #- samples/openapi3/client/petstore/typescript/tests/default/**
       - samples/openapi3/client/petstore/typescript/builds/jquery/**
@@ -104,6 +106,7 @@ jobs:
           - samples/client/petstore/typescript-angular-v18-provided-in-root/
           - samples/client/petstore/typescript-angular-v19-provided-in-root/
           - samples/client/petstore/typescript-angular-v20-provided-in-root/
+          - samples/client/petstore/typescript-angular-v21-provided-in-root/
           - samples/openapi3/client/petstore/typescript/builds/default/
           #- samples/openapi3/client/petstore/typescript/tests/default/
           - samples/openapi3/client/petstore/typescript/builds/jquery/

Dockerfile

@@ -13,6 +13,7 @@ COPY ./google_checkstyle.xml ${GEN_DIR}
 # All poms are copied, then we go offline, to allow for better caching of code changes without fetching all dependencies each time
 COPY ./modules/openapi-generator-gradle-plugin/pom.xml ${GEN_DIR}/modules/openapi-generator-gradle-plugin/
 COPY ./modules/openapi-generator-maven-plugin/pom.xml ${GEN_DIR}/modules/openapi-generator-maven-plugin/
+COPY ./modules/openapi-generator-mill-plugin/pom.xml ${GEN_DIR}/modules/openapi-generator-mill-plugin/
 COPY ./modules/openapi-generator-online/pom.xml ${GEN_DIR}/modules/openapi-generator-online/
 COPY ./modules/openapi-generator-cli/pom.xml ${GEN_DIR}/modules/openapi-generator-cli/
 COPY ./modules/openapi-generator-core/pom.xml ${GEN_DIR}/modules/openapi-generator-core/
@@ -23,6 +24,7 @@ RUN mvn dependency:go-offline
 # Modules are copied individually here to allow for caching of docker layers between major.minor versions
 COPY ./modules/openapi-generator-gradle-plugin ${GEN_DIR}/modules/openapi-generator-gradle-plugin
 COPY ./modules/openapi-generator-maven-plugin ${GEN_DIR}/modules/openapi-generator-maven-plugin
+COPY ./modules/openapi-generator-mill-plugin ${GEN_DIR}/modules/openapi-generator-mill-plugin
 COPY ./modules/openapi-generator-online ${GEN_DIR}/modules/openapi-generator-online
 COPY ./modules/openapi-generator-cli ${GEN_DIR}/modules/openapi-generator-cli
 COPY ./modules/openapi-generator-core ${GEN_DIR}/modules/openapi-generator-core

README.md

@@ -15,7 +15,7 @@
 
 <div align="center">
 
-[Master](https://github.com/OpenAPITools/openapi-generator/tree/master) (`7.19.0`):
+[Master](https://github.com/OpenAPITools/openapi-generator/tree/master) (`7.20.0`):
 [![Integration Test2](https://circleci.com/gh/OpenAPITools/openapi-generator.svg?style=shield)](https://circleci.com/gh/OpenAPITools/openapi-generator)
 [![Bitrise](https://img.shields.io/bitrise/4a2b10a819d12b67/master?label=bitrise%3A%20Swift+4,5&token=859FMDR8QHwabCzwvZK6vQ)](https://app.bitrise.io/app/4a2b10a819d12b67)
 
@@ -148,8 +148,8 @@ The OpenAPI Specification has undergone 3 revisions since initial creation in 20
 
 | OpenAPI Generator Version                                                                                                                                 | Release Date | Notes                                             |
 | --------------------------------------------------------------------------------------------------------------------------------------------------------- | ------------ | ------------------------------------------------- |
-| 7.19.0 (upcoming minor release) [SNAPSHOT](https://github.com/OpenAPITools/openapi-generator/wiki/FAQ#how-to-test-with-the-latest-master-of-openapi-generator) | 22.01.2026   | Minor release with breaking changes (with fallback) |
-| [7.18.0](https://github.com/OpenAPITools/openapi-generator/releases/tag/v7.18.0) (latest stable release)                                                    | 22.12.2025   | Minor release with breaking changes (with fallback) |
+| 7.20.0 (upcoming minor release) [SNAPSHOT](https://github.com/OpenAPITools/openapi-generator/wiki/FAQ#how-to-test-with-the-latest-master-of-openapi-generator) | 20.02.2026   | Minor release with breaking changes (with fallback) |
+| [7.19.0](https://github.com/OpenAPITools/openapi-generator/releases/tag/v7.19.0) (latest stable release)                                                    | 20.01.2026   | Minor release with breaking changes (with fallback) |
 | [6.6.0](https://github.com/OpenAPITools/openapi-generator/releases/tag/v6.6.0)                                                    | 11.05.2023   | Minor release with breaking changes (with fallback) |
 | [5.4.0](https://github.com/OpenAPITools/openapi-generator/releases/tag/v5.4.0)                                                    | 31.01.2022   | Minor release with breaking changes (with fallback) |
 | [4.3.1](https://github.com/OpenAPITools/openapi-generator/releases/tag/v4.3.1)                                                    | 06.05.2020   | Patch release (enhancements, bug fixes, etc)                       |
@@ -212,16 +212,16 @@ See the different versions of the [openapi-generator-cli](https://search.maven.o
 <!-- RELEASE_VERSION -->
 If you're looking for the latest stable version, you can grab it directly from Maven.org (Java 11 runtime at a minimum):
 
-JAR location: `https://repo1.maven.org/maven2/org/openapitools/openapi-generator-cli/7.18.0/openapi-generator-cli-7.18.0.jar`
+JAR location: `https://repo1.maven.org/maven2/org/openapitools/openapi-generator-cli/7.19.0/openapi-generator-cli-7.19.0.jar`
 
 For **Mac/Linux** users:
 ```sh
-wget https://repo1.maven.org/maven2/org/openapitools/openapi-generator-cli/7.18.0/openapi-generator-cli-7.18.0.jar -O openapi-generator-cli.jar
+wget https://repo1.maven.org/maven2/org/openapitools/openapi-generator-cli/7.19.0/openapi-generator-cli-7.19.0.jar -O openapi-generator-cli.jar
 ```
 
 For **Windows** users, you will need to install [wget](http://gnuwin32.sourceforge.net/packages/wget.htm) or you can use Invoke-WebRequest in PowerShell (3.0+), e.g.
 ```
-Invoke-WebRequest -OutFile openapi-generator-cli.jar https://repo1.maven.org/maven2/org/openapitools/openapi-generator-cli/7.18.0/openapi-generator-cli-7.18.0.jar
+Invoke-WebRequest -OutFile openapi-generator-cli.jar https://repo1.maven.org/maven2/org/openapitools/openapi-generator-cli/7.19.0/openapi-generator-cli-7.19.0.jar
 ```
 
 After downloading the JAR, run `java -jar openapi-generator-cli.jar help` to show the usage.
@@ -456,7 +456,7 @@ openapi-generator-cli version
 To use a specific version of "openapi-generator-cli"
 
 ```sh
-openapi-generator-cli version-manager set 7.18.0
+openapi-generator-cli version-manager set 7.19.0
 ```
 
 Or install it as dev-dependency:
@@ -480,7 +480,7 @@ pip install openapi-generator-cli
 
 To install a specific version
 ```
-pip install openapi-generator-cli==7.18.0
+pip install openapi-generator-cli==7.19.0
 ```
 
 You can also install with [jdk4py](https://github.com/activeviam/jdk4py) instead of java binary. (python>=3.10 is required)
@@ -506,7 +506,7 @@ java -jar modules/openapi-generator-cli/target/openapi-generator-cli.jar generat
 (if you're on Windows, replace the last command with `java -jar modules\openapi-generator-cli\target\openapi-generator-cli.jar generate -i https://raw.githubusercontent.com/openapitools/openapi-generator/master/modules/openapi-generator/src/test/resources/3_0/petstore.yaml -g php -o c:\temp\php_api_client`)
 
 <!-- RELEASE_VERSION -->
-You can also download the JAR (latest release) directly from [maven.org](https://repo1.maven.org/maven2/org/openapitools/openapi-generator-cli/7.18.0/openapi-generator-cli-7.18.0.jar)
+You can also download the JAR (latest release) directly from [maven.org](https://repo1.maven.org/maven2/org/openapitools/openapi-generator-cli/7.19.0/openapi-generator-cli-7.19.0.jar)
 <!-- /RELEASE_VERSION -->
 
 To get a list of **general** options available, please run `java -jar modules/openapi-generator-cli/target/openapi-generator-cli.jar help generate`