swaggerhub-maven-plugin

A simple Maven plugin to access SwaggerHub hosting of OpenAPI/Swagger definitions within a Maven build process, using the SwaggerHub API.

Features

• Download/upload API and domain definitions from/to SwaggerHub.
• Upload multiple API or domains at once.
• Authenticate with an API key for restricted operations (for example, to download private definitions).
• Automatically provision an SCM integration to update source control with changes made to definitions.
• Supports YAML and JSON format for definitions.
• Connects to SwaggerHub SaaS by default, with an optional configuration to point to a local SwaggerHub On-Premise instance.

SwaggerHub On-Premise users need v. 1.20.0 to provision SCM integrations via SwaggerHub Maven plugin.

Table of contents

• Example use cases
  • Code-first
  • Design-first
• Dependencies
  • Stable version
  • Snapshots
• Goals
  • download
    • Parameters
  • upload
    • Parameters
    • Multi-upload considerations
    • SCM integration provisioning considerations
    • Examples

Example use cases

The usage pattern depends on whether you use the code-first or design-first approach.

Code-first

1. Code your API implementation.
2. Automatically generate the API definition from the source code, for example, using Swagger Core annotations and Swagger Maven plugin. See the Swagger Core wiki to learn more.
3. Upload the generated API definition to SwaggerHub using the SwaggerHub Maven plugin.

Design-first

1. Write your API definition on SwaggerHub.
2. Download the API definition using the SwaggerHub Maven plugin.
3. Pass the API definition to another Swagger tool, for example:
   • Use Swagger Codegen Maven plugin to generate API server and client code.
   • Use Swagger Inflector to automatically wire up the API definition to the implementation and provide out-of-the-box mocking.

Dependencies

Stable version

  <dependency>
    <groupId>io.swagger</groupId>
    <artifactId>swaggerhub-maven-plugin</artifactId>
    <version>1.0.8</version>
  </dependency>

Snapshots

Snapshots are available from the Sonatype Nexus Snapshots repository. To use a snapshot version, add the following to the <repositories> section of your pom.xml:

<repository>
	<id>sonatype-snapshots</id>
	<name>Sonatype Snapshots</name>
	<url>https://oss.sonatype.org/content/repositories/snapshots</url>
	<snapshots>
		<enabled>true</enabled>
	</snapshots>
</repository>

Goals

SwaggerHub Maven plugin provides two goals, download and upload.

download

This goal downloads an API or domain definition from SwaggerHub to a local file as part of the default Maven build lifecycle.

    <plugin>
        <groupId>io.swagger</groupId>
        <artifactId>swaggerhub-maven-plugin</artifactId>
        <version>1.0.9-SNAPSHOT</version>
        <executions>
            <execution>
                <phase>generate-resources</phase>
                <goals>
                    <goal>download</goal>
                </goals>
                <configuration>
                    <api>PetStoreAPI</api>
                    <owner>jsfrench</owner>
                    <version>1.0.0</version>
                    <outputFile>target/petStoreAPI.json</outputFile>
                </configuration>
            </execution>
        </executions>
    </plugin>

Parameters

upload

This goal creates or updates one or more API or domain definitions on SwaggerHub. All definitions are saved in the owner account (organization or user), and the token owner must have permissions to create and update definitions in this account.

Additionally, there is the option of provisioning a SwaggerHub SCM integration which will allow changes made in SwaggerHub to be pushed back to source control.

There are two uploadType modes:

• inputFile - Upload a single API or domain definition.
• directory - Upload one or more definitions from the specified definitionDirectory, optionally filtered by a regular expression. All definitions must be of the same type - either all APIs or all domains.

Parameters

Common parameters:

Additional parameters for uploadType=inputFile:

Additional parameters for uploadType=directory:

Additional parameters for SCM integration provisioning:

Multi-upload considerations

When using uploadType=directory, all definitions to be uploaded must be stored in the definitionDirectory (the directory itself, not subdirectories). The definitionType parameter specifies whether the files will be uploaded as APIs (default) or domains.

The plugin only processes files with the following extensions: .yaml, .yml, .json. Files with other extensions are ignored. The files must be valid JSON or YAML files.

By default, the plugin uploads all JSON and YAML files from the specified directory, but you can use definitionFileNameRegex to narrow down the files to be uploaded. The regular expression matches against file names without file extensions. The matching is partial unless the regex contains the ^ (beginning of line) and $ (end of line) anchors. To make the matching case-insensitive, include (?i) at the beginning, or (?iu) for Unicode-aware case-insensitive matching. Examples:

• acme matches file names that contain "acme" in lower case.
• ^acme matches file names that begin with "acme" in lower case.
• ^(?i)acme matches file names that begin with "acme" in any letter case.

API/domain names and versions are generated by parsing the info section of the definitions. The info section must include non-empty title and version keys.

• Names are generated based on the info.title, with characters other than A-Za-z0-9_ replaced with underscores. For example, a definition with title: Sample API will be saved under the name Sample_API on SwaggerHub.

• Versions are extracted from the info.version key. If this version already exists in SwaggerHub, it will be updated with the new definition (unless the version is published - in this case the update will be rejected).

If an error occurs while uploading any definition, the build will fail and subsequent definitions will not be uploaded.

SCM integration provisioning considerations

• Supported SCM's include: GITHUB, BITBUCKET, AZURE_DEVOPS_SERVICES, AZURE_DEVOPS_SERVER, GITLAB

• SwaggerHub On-Premise supports this method of SCM integration provisioning since v. 1.20.0.

• Care should be taken when specifying SCM parameters. Validation does not take place prior to making the request to SwaggerHub and issues can arise due to incorrectly configured integrations

• Use only the parameters that are required for the SCM of your choice. For example BITBUCKET relies on scmUsername and scmPassword; if an scmToken is also included, the Bitbucket integration will attempt to authenticate with the token. This is not possible and will cause integration errors.

• BITBUCKET can use app passwords to authenticate. App passwords are substitute passwords for a user account which you can use for scripts and integrating tools to avoid putting your real password into configuration files. App password permissions required are:

  • Account : Email, Read
  • Repositories : Read, Write

  Documentation on how to generate an app password can be found here.

• AZURE_DEVOPS_SERVICES and AZURE_DEVOPS_SERVER use personal access tokens which will eventually expire. In the event of token expiring, the integration will need to be deleted and recreated (either manually or via the plugin).

  See Microsoft documentation here for details on creating a Personal Access Token. Please ensure that the token has at minimum the scope Code (read and write) for the organization you wish to access

• A list of AZURE_DEVOPS_SERVICES organizations that you currently have access to can be found here. Also listed are the projects for each organization.

  Enter just the organization, without ‘dev.azure.com’ at the beginning or ‘.visualstudio.com’ at the end. For example, if your organization is ‘dev.azure.com/example-user’ or 'example-user.visualstudio.com’, enter just 'example-user’.

• Due to GITLAB's nested group support, when specifying repository it is required to specify the full path. For example <repository>root-level-group/sub-level-group/repo</repository>

• scmHost will default to https://gitlab.com for GITLAB

Further documentation of SwaggerHub Integrations can be found here.

Examples

Upload a single API definition

This example uploads the specified API definition in JSON format as a public API in SwaggerHub.

    <plugin>
        <groupId>io.swagger</groupId>
        <artifactId>swaggerhub-maven-plugin</artifactId>
        <version>1.0.9-SNAPSHOT</version>
        <executions>
            <execution>
                <phase>deploy</phase>
                <goals>
                    <goal>upload</goal>
                </goals>
                <configuration>
                    <api>PetStoreAPI</api>
                    <owner>jsfrench</owner>
                    <version>1.0.1-SNAPSHOT</version>
                    <inputFile>target/petStoreAPI.json</inputFile>
                    <token>${SWAGGERHUB_APIKEY}</token>
                    <uploadType>inputFile</uploadType>
                </configuration>
            </execution>
        </executions>
    </plugin>

Usage together with swagger-maven-plugin (code-first)

This example uses the Swagger Maven plugin to generate the API definition from source code, and then uploads this definition to SwaggerHub.

    <plugin>
        <groupId>io.swagger.core.v3</groupId>
        <artifactId>swagger-maven-plugin</artifactId>
        <version>2.0.5</version>
        <configuration>
            <outputFileName>petStoreAPI</outputFileName>
            <outputPath>${project.build.directory}</outputPath>
            <outputFormat>JSON</outputFormat>
            <resourcePackages>
                <package>test.petstore</package>
            </resourcePackages>
            <prettyPrint>TRUE</prettyPrint>
        </configuration>
        <executions>
            <execution>
                <phase>compile</phase>
                <goals>
                    <goal>resolve</goal>
                </goals>
            </execution>
        </executions>
    </plugin>
    <plugin>
        <groupId>io.swagger</groupId>
        <artifactId>swaggerhub-maven-plugin</artifactId>
        <version>1.0.9-SNAPSHOT</version>
        <executions>
            <execution>
                <phase>deploy</phase>
                <goals>
                    <goal>upload</goal>
                </goals>
                <configuration>
                    <api>PetStoreAPI</api>
                    <owner>jsfrench</owner>
                    <version>1.0.1-SNAPSHOT</version>
                    <inputFile>target/petStoreAPI.json</inputFile>
                    <token>${SWAGGERHUB_APIKEY}</token>
                    <uploadType>inputFile</uploadType>
                </configuration>
            </execution>
        </executions>
    </plugin>

Upload multiple API definitions

This example uploads all JSON and YAML files from the ${project.basedir}/api-definitions directory to SwaggerHub.

    <plugin>
        <groupId>io.swagger</groupId>
        <artifactId>swaggerhub-maven-plugin</artifactId>
        <version>1.0.9-SNAPSHOT</version>
        <executions>
            <execution>
                <phase>deploy</phase>
                <goals>
                    <goal>upload</goal>
                </goals>
                <configuration>
                    <owner>jsfrench</owner>
                    <token>${SWAGGERHUB_APIKEY}</token>
                    <uploadType>directory</uploadType>
                    <definitionDirectory>${project.basedir}/api-definitions</definitionDirectory>
                </configuration>
            </execution>
        </executions>
    </plugin>

Upload multiple API definitions filtered by a regex

This example uploads all JSON and YAML files from the specified directory whose names start with "definition".

    <plugin>
        <groupId>io.swagger</groupId>
        <artifactId>swaggerhub-maven-plugin</artifactId>
        <version>1.0.9-SNAPSHOT</version>
        <executions>
            <execution>
                <phase>deploy</phase>
                <goals>
                    <goal>upload</goal>
                </goals>
                <configuration>
                    <owner>jsfrench</owner>
                    <token>${SWAGGERHUB_APIKEY}</token>
                    <uploadType>directory</uploadType>
                    <definitionDirectory>${project.basedir}/api-definitions</definitionDirectory>
                    <definitionFileNameRegex>^definition\w*</definitionDirectory>
                </configuration>
            </execution>
        </executions>
    </plugin>

Upload multiple API definitions via a specified directory and configure GitHub integrations for each definition

    <plugin>
        <groupId>io.swagger</groupId>
        <artifactId>swaggerhub-maven-plugin</artifactId>
        <version>1.0.9-SNAPSHOT</version>
        <executions>
            <execution>
                <phase>deploy</phase>
                <goals>
                    <goal>upload</goal>
                </goals>
                <configuration>
                    <owner>jsfrench</owner>
                    <token>${SWAGGERHUB_APIKEY}</token>
                    <uploadType>directory</uploadType>
                    <definitionDirectory>${project.basedir}/api-definitions</definitionDirectory>
                    <scmToken>${GITHUB_APIKEY}</scmToken>
                    <scmProvider>GITHUB</scmProvider>
                    <repository>my_definitions_repository</repository>
                    <repositoryOwner>githubUser</repositoryOwner>
                    <branch>develop</branch>
                </configuration>
            </execution>
        </executions>
    </plugin>