⭐⭐⭐ If you would like to contribute, please refer to guidelines and a list of open tasks.:star::star::star:
📔 For more information, please refer to the Wiki page and FAQ 📔
This is the swagger codegen project, which allows generation of client libraries automatically from a Swagger-compliant server.
Check out Swagger-Spec for additional information about the Swagger project, including additional libraries with support for other languages and more.
- Swagger Code Generator
- Overview
- Table of Contents
- Installation
- Getting Started
- Generators
- To generate a sample client library
- Generating libraries from your server
- Modifying the client library format
- Making your own codegen modules
- Where is Javascript???
- Generating a client from local files
- Customizing the generator
- Validating your OpenAPI Spec
- Generating dynamic html api documentation
- Generating static html api documentation
- To build a server stub
- To build the codegen library
- Workflow Integration
- Github Integration
- Online Generators
- Guidelines for Contribution
- Companies/Projects using Swagger Codegen
- Swagger Codegen Core Team
- License
The OpenAPI Specification has undergone 3 revisions since initial creation in 2010. The swagger-codegen project has the following compatibilies with the OpenAPI Specification:
| Swagger Codegen Version | Release Date | OpenAPI Spec compatibility | Notes |
|---|---|---|---|
| 2.1.7-SNAPSHOT | 1.0, 1.1, 1.2, 2.0 | master | |
| 2.1.6 (current stable) | 2016-04-06 | 1.0, 1.1, 1.2, 2.0 | tag v2.1.6 |
| 2.0.17 | 2014-08-22 | 1.1, 1.2 | tag v2.0.17 |
| 1.0.4 | 2012-04-12 | 1.0, 1.1 | tag v1.0.4 |
If you're looking for the latest stable version, you can grab it directly from maven central (you'll need java 7 runtime at a minimum):
wget http://repo1.maven.org/maven2/io/swagger/swagger-codegen-cli/2.1.6/swagger-codegen-cli-2.1.6.jar -O swagger-codegen-cli.jar
java -jar swagger-codegen-cli.jar help
On a mac, it's even easier with brew:
brew install swagger-codegen
To build from source, you need the following installed and available in your $PATH:
Don't forget to install Java 7 or 8. You probably have 1.6.
Export JAVA_HOME in order to use the supported Java version:
export JAVA_HOME=`/usr/libexec/java_home -v 1.8`
export PATH=${JAVA_HOME}/bin:$PATH
After cloning the project, you can build it from source with this command:
mvn package
git clone https://github.com/swagger-api/swagger-codegen
cd swagger-codegen
./run-in-docker.sh mvn package
Prerequisite: install Vagrant and VirtualBox.
git clone http://github.com/swagger-api/swagger-codegen.git
cd swagger-codegen
vagrant up
vagrant ssh
cd /vagrant
./run-in-docker.sh mvn package
https://hub.docker.com/r/swaggerapi/swagger-generator/
To install, run brew install swagger-codegen
Here is an example usage:
swagger-codegen generate -i http://petstore.swagger.io/v2/swagger.json -l ruby -o /tmp/test/
To generate a PHP client for http://petstore.swagger.io/v2/swagger.json, please run the following
git clone https://github.com/swagger-api/swagger-codegen
cd swagger-codegen
mvn clean package
java -jar modules/swagger-codegen-cli/target/swagger-codegen-cli.jar generate \
-i http://petstore.swagger.io/v2/swagger.json \
-l php \
-o /var/tmp/php_api_client(if you're on Windows, replace the last command with java -jar modules\swagger-codegen-cli\target\swagger-codegen-cli.jar generate -i http://petstore.swagger.io/v2/swagger.json -l php -o c:\temp\php_api_client)
You can also download the JAR (latest relesae) directly from maven.org
To get a list of general options available, please run java -jar modules/swagger-codegen-cli/target/swagger-codegen-cli.jar help generate
To get a list of PHP specified options (which can be passed to the generator with a config file via the -c option), please run java -jar modules/swagger-codegen-cli/target/swagger-codegen-cli.jar config-help -l php
You can build a client against the swagger sample petstore API as follows:
./bin/java-petstore.sh
(On Windows, run .\bin\windows\java-petstore.bat instead)
This will run the generator with this command:
java -jar modules/swagger-codegen-cli/target/swagger-codegen-cli.jar generate \
-i http://petstore.swagger.io/v2/swagger.json \
-l java \
-o samples/client/petstore/java
with a number of options. You can get the options with the help generate command:
NAME
swagger-codegen-cli generate - Generate code with chosen lang
SYNOPSIS
swagger-codegen-cli generate
[(-a <authorization> | --auth <authorization>)]
[--additional-properties <additional properties>]
[--api-package <api package>] [--artifact-id <artifact id>]
[--artifact-version <artifact version>]
[(-c <configuration file> | --config <configuration file>)]
[-D <system properties>] [--group-id <group id>]
(-i <spec file> | --input-spec <spec file>)
[--import-mappings <import mappings>]
[--instantiation-types <instantiation types>]
[--invoker-package <invoker package>]
(-l <language> | --lang <language>)
[--language-specific-primitives <language specific primitives>]
[--library <library>] [--model-package <model package>]
[(-o <output directory> | --output <output directory>)]
[(-s | --skip-overwrite)]
[(-t <template directory> | --template-dir <template directory>)]
[--type-mappings <type mappings>] [(-v | --verbose)]
OPTIONS
-a <authorization>, --auth <authorization>
adds authorization headers when fetching the swagger definitions
remotely. Pass in a URL-encoded string of name:header with a comma
separating multiple values
--additional-properties <additional properties>
sets additional properties that can be referenced by the mustache
templates in the format of name=value,name=value
--api-package <api package>
package for generated api classes
--artifact-id <artifact id>
artifactId in generated pom.xml
--artifact-version <artifact version>
artifact version in generated pom.xml
-c <configuration file>, --config <configuration file>
Path to json configuration file. File content should be in a json
format {"optionKey":"optionValue", "optionKey1":"optionValue1"...}
Supported options can be different for each language. Run
config-help -l {lang} command for language specific config options.
-D <system properties>
sets specified system properties in the format of
name=value,name=value
--group-id <group id>
groupId in generated pom.xml
-i <spec file>, --input-spec <spec file>
location of the swagger spec, as URL or file (required)
--import-mappings <import mappings>
specifies mappings between a given class and the import that should
be used for that class in the format of type=import,type=import
--instantiation-types <instantiation types>
sets instantiation type mappings in the format of
type=instantiatedType,type=instantiatedType.For example (in Java):
array=ArrayList,map=HashMap. In other words array types will get
instantiated as ArrayList in generated code.
--invoker-package <invoker package>
root package for generated code
-l <language>, --lang <language>
client language to generate (maybe class name in classpath,
required)
--language-specific-primitives <language specific primitives>
specifies additional language specific primitive types in the format
of type1,type2,type3,type3. For example:
String,boolean,Boolean,Double
--library <library>
library template (sub-template)
--model-package <model package>
package for generated models
-o <output directory>, --output <output directory>
where to write the generated files (current dir by default)
-s, --skip-overwrite
specifies if the existing files should be overwritten during the
generation.
-t <template directory>, --template-dir <template directory>
folder containing the template files
--type-mappings <type mappings>
sets mappings between swagger spec types and generated code types in
the format of swaggerType=generatedType,swaggerType=generatedType.
For example: array=List,map=Map,string=String
-v, --verbose
verbose mode
You can then compile and run the client, as well as unit tests against it:
cd samples/client/petstore/java
mvn package
Other languages have petstore samples, too:
./bin/android-petstore.sh
./bin/java-petstore.sh
./bin/objc-petstore.sh
It's just as easy--just use the -i flag to point to either a server or file.
Don't like the default swagger client syntax? Want a different language supported? No problem! Swagger codegen processes mustache templates with the jmustache engine. You can modify our templates or make your own.
You can look at modules/swagger-codegen/src/main/resources/${your-language} for examples. To make your own templates, create your own files and use the -t flag to specify your template folder. It actually is that easy.
If you're starting a project with a new language and don't see what you need, swagger-codegen can help you create a project to generate your own libraries:
java -jar modules/swagger-codegen-cli/target/swagger-codegen-cli.jar meta \
-o output/myLibrary -n myClientCodegen -p com.my.company.codegen
This will write, in the folder output/myLibrary, all the files you need to get started, including a README.md. Once modified and compiled, you can load your library with the codegen and generate clients with your own, custom-rolled logic.
You would then compile your library in the output/myLibrary folder with mvn package and execute the codegen like such:
java -cp output/myLibrary/target/myClientCodegen-swagger-codegen-1.0.0.jar:modules/swagger-codegen-cli/target/swagger-codegen-cli.jar io.swagger.codegen.SwaggerCodegen
Note the myClientCodegen is an option now, and you can use the usual arguments for generating your library:
java -cp output/myLibrary/target/myClientCodegen-swagger-codegen-1.0.0.jar:modules/swagger-codegen-cli/target/swagger-codegen-cli.jar \
io.swagger.codegen.SwaggerCodegen generate -l myClientCodegen\
-i http://petstore.swagger.io/v2/swagger.json \
-o myClient
See our javascript library--it's completely dynamic and doesn't require static code generation. There is a third-party component called swagger-js-codegen that can generate angularjs or nodejs source code from a OpenAPI Specification.
❗ On Dec 7th 2015, a Javascript API client generator has been added by @jfiala.
If you don't want to call your server, you can save the OpenAPI Spec files into a directory and pass an argument to the code generator like this:
-i ./modules/swagger-codegen/src/test/resources/2_0/petstore.json
Great for creating libraries on your ci server, from the Swagger Editor... or while coding on an airplane.
You may not want to generate all models in your project. Likewise you may want just one or two apis to be written. If that's the case, you can use system properties to control the output:
The default is generate everything supported by the specific library. Once you enable a feature, it will restrict the contents generated:
# generate only models
java -Dmodels {opts}
# generate only apis
java -Dapis {opts}
# generate only supporting files
java -DsupportingFiles
# generate models and supporting files
java -Dmodels -DsupportingFiles
To control the specific files being generated, you can pass a CSV list of what you want:
# generate the User and Pet models only
-Dmodels=User,Pet
# generate the User model and the supportingFile `StringUtil.java`:
-Dmodels=User -DsupportingFiles=StringUtil.java
When using selective generation, only the templates needed for the specific generation will be used.
There are different aspects of customizing the code generator beyond just creating or modifying templates. Each language has a supporting configuration file to handle different type mappings, etc:
$ ls -1 modules/swagger-codegen/src/main/java/io/swagger/codegen/languages/
AbstractJavaJAXRSServerCodegen.java
AbstractTypeScriptClientCodegen.java
AkkaScalaClientCodegen.java
AndroidClientCodegen.java
AspNet5ServerCodegen.java
AsyncScalaClientCodegen.java
CSharpClientCodegen.java
ClojureClientCodegen.java
CsharpDotNet2ClientCodegen.java
DartClientCodegen.java
FlashClientCodegen.java
FlaskConnexionCodegen.java
GoClientCodegen.java
HaskellServantCodegen.java
JMeterCodegen.java
JavaCXFServerCodegen.java
JavaClientCodegen.java
JavaInflectorServerCodegen.java
JavaJerseyServerCodegen.java
JavaResteasyServerCodegen.java
JavascriptClientCodegen.java
NodeJSServerCodegen.java
ObjcClientCodegen.java
PerlClientCodegen.java
PhpClientCodegen.java
PythonClientCodegen.java
Qt5CPPGenerator.java
RubyClientCodegen.java
ScalaClientCodegen.java
ScalatraServerCodegen.java
SilexServerCodegen.java
SinatraServerCodegen.java
SlimFrameworkServerCodegen.java
SpringMVCServerCodegen.java
StaticDocCodegen.java
StaticHtmlGenerator.java
SwaggerGenerator.java
SwaggerYamlGenerator.java
SwiftCodegen.java
TizenClientCodegen.java
TypeScriptAngularClientCodegen.java
TypeScriptNodeClientCodegen.java
Each of these files creates reasonable defaults so you can get running quickly. But if you want to configure package names, prefixes, model folders, etc. you can use a json config file to pass the values.
java -jar modules/swagger-codegen-cli/target/swagger-codegen-cli.jar generate \
-i http://petstore.swagger.io/v2/swagger.json \
-l java \
-o samples/client/petstore/java \
-c path/to/config.json
Supported config options can be different per language. Running config-help -l {lang} will show available options. These options are applied
by passing them with `-D{optionName}={optionValue}.
java -jar modules/swagger-codegen-cli/target/swagger-codegen-cli.jar config-help -l java
Output
CONFIG OPTIONS
modelPackage
package for generated models
apiPackage
package for generated api classes
sortParamsByRequiredFlag
Sort method arguments to place required parameters before optional parameters. Default: true
invokerPackage
root package for generated code
groupId
groupId in generated pom.xml
artifactId
artifactId in generated pom.xml
artifactVersion
artifact version in generated pom.xml
sourceFolder
source folder for generated code
localVariablePrefix
prefix for generated code members and local variables
serializableModel
boolean - toggle "implements Serializable" for generated models
library
library template (sub-template) to use:
<default> - HTTP client: Jersey client 1.18. JSON processing: Jackson 2.4.2
jersey2 - HTTP client: Jersey client 2.6
feign - HTTP client: Netflix Feign 8.1.1. JSON processing: Jackson 2.6.3
okhttp-gson - HTTP client: OkHttp 2.4.0. JSON processing: Gson 2.3.1
retrofit - HTTP client: OkHttp 2.4.0. JSON processing: Gson 2.3.1 (Retrofit 1.9.0)
retrofit2 - HTTP client: OkHttp 2.5.0. JSON processing: Gson 2.4 (Retrofit 2.0.0-beta2)
Your config file for Java can look like
{
"groupId":"com.my.company",
"artifactId":"MyClient",
"artifactVersion":"1.2.0",
"library":"feign"
}For all the unspecified options default values will be used.
Another way to override default options is to extend the config class for the specific language. To change, for example, the prefix for the Objective-C generated files, simply subclass the ObjcClientCodegen.java:
package com.mycompany.swagger.codegen;
import io.swagger.codegen.languages.*;
public class MyObjcCodegen extends ObjcClientCodegen {
static {
PREFIX = "HELO";
}
}and specify the classname when running the generator:
-l com.mycompany.swagger.codegen.MyObjcCodegen
Your subclass will now be loaded and overrides the PREFIX value in the superclass.
Sometimes you don't want a model generated. In this case, you can simply specify an import mapping to tell the codegen what not to create. When doing this, every location that references a specific model will refer back to your classes. Note, this may not apply to all languages...
To specify an import mapping, use the --import-mappings argument and specify the model-to-import logic as such:
--import-mappings Pet=my.models.MyPet
Or for multiple mappings:
Pet=my.models.MyPet,Order=my.models.MyOrder
You have options. The easiest is to use our online validator which not only will let you validate your spec, but with the debug flag, you can see what's wrong with your spec. For example:
http://online.swagger.io/validator/debug?url=http://petstore.swagger.io/v2/swagger.json
To do so, just use the -l dynamic-html flag when reading a spec file. This creates HTML documentation that is available as a single-page application with AJAX. To view the documentation:
cd samples/dynamic-html/
npm install
node .
Which launches a node.js server so the AJAX calls have a place to go.
To do so, just use the -l html flag when reading a spec file. This creates a single, simple HTML file with embedded css so you can ship it as an email attachment, or load it from your filesystem:
cd samples/html/
open index.html
You can also use the codegen to generate a server for a couple different frameworks. Take a look here:
java -jar modules/swagger-codegen-cli/target/swagger-codegen-cli.jar generate \
-i http://petstore.swagger.io/v2/swagger.json \
-l nodejs-server \
-o samples/server/petstore/nodejs
java -jar modules/swagger-codegen-cli/target/swagger-codegen-cli.jar generate \
-i http://petstore.swagger.io/v2/swagger.json \
-l slim \
-o samples/server/petstore/slim
java -jar modules/swagger-codegen-cli/target/swagger-codegen-cli.jar generate \
-i http://petstore.swagger.io/v2/swagger.json \
-l silex \
-o samples/server/petstore/silex
java -jar modules/swagger-codegen-cli/target/swagger-codegen-cli.jar generate \
-i http://petstore.swagger.io/v2/swagger.json \
-l python-flask \
-o samples/server/petstore/flaskConnexion
java -jar modules/swagger-codegen-cli/target/swagger-codegen-cli.jar generate \
-i http://petstore.swagger.io/v2/swagger.json \
-l sinatra \
-o samples/server/petstore/sinatra
java -jar modules/swagger-codegen-cli/target/swagger-codegen-cli.jar generate \
-i http://petstore.swagger.io/v2/swagger.json \
-l scalatra \
-o samples/server/petstore/scalatra
java -jar modules/swagger-codegen-cli/target/swagger-codegen-cli.jar generate \
-i http://petstore.swagger.io/v2/swagger.json \
-l jaxrs \
-o samples/server/petstore/jaxrs-jersey
java -jar modules/swagger-codegen-cli/target/swagger-codegen-cli.jar generate \
-i http://petstore.swagger.io/v2/swagger.json \
-l jaxrs-cxf \
-o samples/server/petstore/jaxrs-cxf
This Codegen only generate a minimalist server stub. You must add the CXF dependency to your classpath (eg: with Maven)
If you are using CXF v2.x, you must provided a custom ResourceComparator class. This class will help CXF to choose the good resource interface for mapping an incomming request. The default behavior of CXF v2.x is not correct when many resources interface have the same global path.
See: See http://cxf.apache.org/docs/jax-rs-basics.html#JAX-RSBasics-Customselectionbetweenmultipleresources
You can found this class here: https://github.com/hiveship/CXF2-resource-comparator/blob/master/src/main/java/CXFInterfaceComparator.java TODO: This class could be directly generated by the Codegen.
You must register this class into your JAX-RS configuration file:
<jaxrs:resourceComparator>
<bean class="your.package.CXFInterfaceComparator"/>
</jaxrs:resourceComparator> This is no longer necessary if you are using CXF >=v3.x
java -jar modules/swagger-codegen-cli/target/swagger-codegen-cli.jar generate \
-i http://petstore.swagger.io/v2/swagger.json \
-l jaxrs-resteasy \
-o samples/server/petstore/jaxrs-resteasy
java -jar modules/swagger-codegen-cli/target/swagger-codegen-cli.jar generate \
-i http://petstore.swagger.io/v2/swagger.json \
-l spring-mvc \
-o samples/server/petstore/spring-mvc
java -jar modules/swagger-codegen-cli/target/swagger-codegen-cli.jar generate \
-i http://petstore.swagger.io/v2/swagger.json \
-l springboot \
-o samples/server/petstore/springboot
You can also set a Json file with basePackage & configPackage properties :
Example :
{
"basePackage":"io.swagger",
"configPackage":"io.swagger.config"
}
For use it add option -c myOptions.json to the generation command
To Use-it :
in the generated folder try mvn package for build jar.
Start your server java -jar target/swagger-springboot-server-1.0.0.jar
SpringBoot listening on default port 8080
java -jar modules/swagger-codegen-cli/target/swagger-codegen-cli.jar generate \
-i http://petstore.swagger.io/v2/swagger.json \
-l haskell-servant \
-o samples/server/petstore/haskell-servant
java -jar modules/swagger-codegen-cli/target/swagger-codegen-cli.jar generate \
-i http://petstore.swagger.io/v2/swagger.json \
-l aspnet5 \
-o samples/server/petstore/aspnet5
This will create the swagger-codegen library from source.
mvn package
Note! The templates are included in the library generated. If you want to modify the templates, you'll need to either repackage the library OR specify a path to your scripts
You can use the swagger-codegen-maven-plugin for integrating with your workflow, and generating any codegen target.
To push the auto-generated SDK to GitHub, we provide git_push.sh to streamline the process. For example:
-
Create a new repository in GitHub (Ref: https://help.github.com/articles/creating-a-new-repository/)
-
Generate the SDK
java -jar modules/swagger-codegen-cli/target/swagger-codegen-cli.jar generate \
-i modules/swagger-codegen/src/test/resources/2_0/petstore.json -l perl \
--git-user-id "wing328" \
--git-repo-id "petstore-perl" \
--release-note "Github integration demo" \
-o /var/tmp/perl/petstore
- Push the SDK to GitHub
cd /var/tmp/perl/petstore
/bin/sh ./git_push.sh
One can also generate API client or server using the online generators (https://generator.swagger.io)
For example, to generate Ruby API client, simply send the following HTTP request using curl:
curl -X POST -H "content-type:application/json" -d '{"swaggerUrl":"http://petstore.swagger.io/v2/swagger.json"}' https://generator.swagger.io/api/gen/clients/ruby
Then you will receieve a JSON response with the URL to download the zipped code.
Please refer to this page
Here are some companies/projects using Swagger Codegen in production. To add your company/project to the list, please visit README.md and click on the icon to edit the page.
- Activehours
- Acunetix
- Atlassian
- beemo
- bitly
- Cachet Financial
- CloudBoost
- Cupix
- DocuSign
- Ergon
- eureka
- everystory.us
- Expected Behavior
- FH Münster - University of Applied Sciences
- Interactive Intelligence
- LANDR Audio
- LiveAgent
- Kuary
- nViso
- Okiok
- OSDN
- PagerDuty
- Pepipost
- Pixoneye
- PostAffiliatePro
- Reload! A/S
- REstore
- Royal Bank of Canada (RBC)
- SmartRecruiters
- StyleRecipe
- Svenska Spel AB
- ThoughtWorks
- uShip
- Zalando
- ZEEF.com
Swaagger Codegen core team members are contributors who have been making signficiant contributions (review issues, fix bugs, make enhancements, etc) to the project on a regular basis.
| Langauges | Core Team (join date) |
|---|---|
| ActionScript | |
| C++ | |
| C# | @jimschubert (2016/05/01) |
| Clojure | @xhh (2016/05/01) |
| Dart | |
| Groovy | |
| Go | @guohuang (2016/05/01) @neilotoole (2016/05/01) |
| Java | @cbornet (2016/05/01) @xhh (2016/05/01) |
| NodeJS/Javascript | @xhh (2016/05/01) |
| ObjC | @mateuszmackowiak (2016/05/09) |
| Perl | @wing328 (2016/05/01) |
| PHP | @arnested (2016/05/01) |
| Python | @scottrw93 (2016/05/01) |
| Ruby | @wing328 (2016/05/01) |
| Scala | |
| Swift | @jaz-ah (2016/05/01) @Edubits (2016/05/01) |
| TypeScript (Node) | @Vrolijkx (2016/05/01) |
| TypeScript (Angular1) | @Vrolijkx (2016/05/01) |
| TypeScript (Angular2) | @Vrolijkx (2016/05/01) |
| TypeScript (Fetch) |
| Langauges | Core Team (date joined) |
|---|---|
| C# ASP.NET5 | @jimschubert (2016/05/01) |
| Haskell Servant | |
| Java Spring Boot | |
| Java SpringMVC | @kolyjjj (2016/05/01) |
| Java JAX-RS | |
| NodeJS | @kolyjjj (2016/05/01) |
| PHP Lumen | @abcsum (2016/05/01) |
| PHP Silex | |
| PHP Slim | |
| Python Flask | |
| Ruby Sinatra | @wing328 (2016/05/01) |
| Scala Scalatra |
Here is a list of template creators:
- API Clients:
- Akka-Scala: @cchafer
- C# (.NET 2.0): @who
- Clojure: @xhh
- Dart: @yissachar
- Groovy: @victorgit
- Go: @wing328
- Java (Retrofit): @0legg
- Java (Retrofi2): @emilianobonassi
- Java (Jersey2): @xhh
- Java (okhttp-gson): @xhh
- Javascript/NodeJS: @jfiala
- Javascript (Closure-annotated Angular) @achew22
- Perl: @wing328
- Swift: @tkqubo
- TypeScript (Node): @mhardorf
- TypeScript (Angular1): @mhardorf
- TypeScript (Fetch): @leonyu
- TypeScript (Angular2): @roni-frantchi
- Server Stubs
- C# ASP.NET5: @jimschubert
- Haskell Servant: @algas
- Java Spring Boot: @diyfr
- JAX-RS RestEasy: @chameleon82
- JAX-RS CXF: @hiveship
- PHP Lumen: @abcsum
- PHP Slim: @jfastnacht
Here are the requirements to become a core team member:
- rank within top 50 in https://github.com/swagger-api/swagger-codegen/graphs/contributors
- to contribute, here are some good starting points
- regular contributions to the project
- about 3 hours per week
- for contribution, it can be addressing issues, reviewing PRs submitted by others, submitting PR to fix bugs or make enhancements, etc
To join the core team, please reach out to wing328hk@gmail.com (@wing328) for more information.
To become a Template Creator, simply submit a PR for new API client (e.g. Rust, Elixir) or server stub (e.g. Ruby Grape) generator.
Copyright 2016 SmartBear Software
Licensed under the Apache License, Version 2.0 (the "License"); you may not use this file except in compliance with the License. You may obtain a copy of the License at apache.org/licenses/LICENSE-2.0
Unless required by applicable law or agreed to in writing, software distributed under the License is distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the License for the specific language governing permissions and limitations under the License.
