William Cheng c5a0374d2b
[Ruby] add useAutoload option to use autoload instead of require (#13153)
* [Ruby] Use Ruby autoload to lower memory usage and load times

Fixes #12648

Requiring all models up front can be very expensive in both time and
memory if there are many models. In an example client with 6000 models,
this would consume nearly 400MB of memory and take about 7 seconds to
load. This is mostly unnecessary as most users of the client library
will only actually use a small percentage of the library.

The changes in this commit use Ruby's autoload capability to defer the
loading until the constant is actually used. In that same example client
with 6000 models, when initially requiring the library, the memory
usage dropped to ~20MB and loaded in 0.3 seconds. As the constants are
loaded on-demand, the memory would increase towards that 400MB ceiling,
but if only a few constants are actually used, then memory will never
actually hit that ceiling.

An additional side effect of using Ruby's autoload is that the order of
declaring the constants is not important, as Ruby will naturally load
them in the correct order when they are needed. Thus, this commit obviates
PR #9103 and fixes #4690.

* add option to use autoload in ruby client

* test ruby clients only

* add tests

* update samples

* Revert "test ruby clients only"

This reverts commit 0aaf71cd4cc5d266f824b261a4d312f07bd589e5.

* update doc

Co-authored-by: Jason Frey <fryguy9@gmail.com>
2022-08-11 12:45:13 +08:00

246 lines
8.3 KiB
Markdown

---
title: Documentation for the ruby Generator
---
## METADATA
| Property | Value | Notes |
| -------- | ----- | ----- |
| generator name | ruby | pass this to the generate command after -g |
| generator stability | STABLE | |
| generator type | CLIENT | |
| generator language | Ruby | |
| generator default templating engine | mustache | |
| helpTxt | Generates a Ruby client library. | |
## CONFIG OPTIONS
These options may be applied as additional-properties (cli) or configOptions (plugins). Refer to [configuration docs](https://openapi-generator.tech/docs/configuration) for more details.
| Option | Description | Values | Default |
| ------ | ----------- | ------ | ------- |
|allowUnicodeIdentifiers|boolean, toggles whether unicode identifiers are allowed in names or not, default is false| |false|
|disallowAdditionalPropertiesIfNotPresent|If false, the 'additionalProperties' implementation (set to true by default) is compliant with the OAS and JSON schema specifications. If true (default), keep the old (incorrect) behaviour that 'additionalProperties' is set to false by default.|<dl><dt>**false**</dt><dd>The 'additionalProperties' implementation is compliant with the OAS and JSON schema specifications.</dd><dt>**true**</dt><dd>Keep the old (incorrect) behaviour that 'additionalProperties' is set to false by default.</dd></dl>|true|
|ensureUniqueParams|Whether to ensure parameter names are unique in an operation (rename parameters that are not).| |true|
|enumUnknownDefaultCase|If the server adds new enum cases, that are unknown by an old spec/client, the client will fail to parse the network response.With this option enabled, each enum will have a new case, 'unknown_default_open_api', so that when the server sends an enum case that is not known by the client/spec, they can safely fallback to this case.|<dl><dt>**false**</dt><dd>No changes to the enum's are made, this is the default option.</dd><dt>**true**</dt><dd>With this option enabled, each enum will have a new case, 'unknown_default_open_api', so that when the enum case sent by the server is not known by the client/spec, can safely be decoded to this case.</dd></dl>|false|
|gemAuthor|gem author (only one is supported).| |OpenAPI-Generator|
|gemAuthorEmail|gem author email (only one is supported).| |null|
|gemDescription|gem description. | |This gem maps to a REST API|
|gemHomepage|gem homepage. | |https://openapi-generator.tech|
|gemLicense|gem license. | |unlicense|
|gemName|gem name (convention: underscore_case).| |openapi_client|
|gemRequiredRubyVersion|gem required Ruby version. | |&gt;= 2.4|
|gemSummary|gem summary. | |A ruby wrapper for the REST APIs|
|gemVersion|gem version.| |1.0.0|
|hideGenerationTimestamp|Hides the generation timestamp when files are generated.| |true|
|legacyDiscriminatorBehavior|Set to false for generators with better support for discriminators. (Python, Java, Go, PowerShell, C#have this enabled by default).|<dl><dt>**true**</dt><dd>The mapping in the discriminator includes descendent schemas that allOf inherit from self and the discriminator mapping schemas in the OAS document.</dd><dt>**false**</dt><dd>The mapping in the discriminator includes any descendent schemas that allOf inherit from self, any oneOf schemas, any anyOf schemas, any x-discriminator-values, and the discriminator mapping schemas in the OAS document AND Codegen validates that oneOf and anyOf schemas contain the required discriminator and throws an error if the discriminator is missing.</dd></dl>|true|
|library|HTTP library template (sub-template) to use|<dl><dt>**faraday**</dt><dd>Faraday (https://github.com/lostisland/faraday) (Beta support)</dd><dt>**typhoeus**</dt><dd>Typhoeus &gt;= 1.0.1 (https://github.com/typhoeus/typhoeus)</dd></dl>|typhoeus|
|moduleName|top module name (convention: CamelCase, usually corresponding to gem name).| |OpenAPIClient|
|prependFormOrBodyParameters|Add form or body parameters to the beginning of the parameter list.| |false|
|sortModelPropertiesByRequiredFlag|Sort model properties to place required parameters before optional parameters.| |true|
|sortParamsByRequiredFlag|Sort method arguments to place required parameters before optional parameters.| |true|
|useAutoload|Use autoload instead of require to load modules.| |false|
## IMPORT MAPPING
| Type/Alias | Imports |
| ---------- | ------- |
## INSTANTIATION TYPES
| Type/Alias | Instantiated By |
| ---------- | --------------- |
|array|Array|
|map|Hash|
|set|Set|
## LANGUAGE PRIMITIVES
<ul class="column-ul">
<li>Array</li>
<li>Boolean</li>
<li>Date</li>
<li>File</li>
<li>Float</li>
<li>Hash</li>
<li>Integer</li>
<li>Object</li>
<li>String</li>
<li>Time</li>
<li>array</li>
<li>int</li>
<li>map</li>
<li>string</li>
</ul>
## RESERVED WORDS
<ul class="column-ul">
<li>__file__</li>
<li>__line__</li>
<li>_header_accept</li>
<li>_header_accept_result</li>
<li>_header_content_type</li>
<li>alias</li>
<li>and</li>
<li>auth_names</li>
<li>begin</li>
<li>break</li>
<li>case</li>
<li>class</li>
<li>def</li>
<li>defined?</li>
<li>do</li>
<li>else</li>
<li>elsif</li>
<li>end</li>
<li>ensure</li>
<li>false</li>
<li>for</li>
<li>form_params</li>
<li>header_params</li>
<li>if</li>
<li>in</li>
<li>local_var_path</li>
<li>module</li>
<li>next</li>
<li>nil</li>
<li>not</li>
<li>or</li>
<li>post_body</li>
<li>query_params</li>
<li>redo</li>
<li>rescue</li>
<li>retry</li>
<li>return</li>
<li>self</li>
<li>send</li>
<li>super</li>
<li>then</li>
<li>true</li>
<li>undef</li>
<li>unless</li>
<li>until</li>
<li>when</li>
<li>while</li>
<li>yield</li>
</ul>
## FEATURE SET
### Client Modification Feature
| Name | Supported | Defined By |
| ---- | --------- | ---------- |
|BasePath|✓|ToolingExtension
|Authorizations|✗|ToolingExtension
|UserAgent|✓|ToolingExtension
|MockServer|✗|ToolingExtension
### Data Type Feature
| Name | Supported | Defined By |
| ---- | --------- | ---------- |
|Custom|✗|OAS2,OAS3
|Int32|✓|OAS2,OAS3
|Int64|✓|OAS2,OAS3
|Float|✓|OAS2,OAS3
|Double|✓|OAS2,OAS3
|Decimal|✓|ToolingExtension
|String|✓|OAS2,OAS3
|Byte|✓|OAS2,OAS3
|Binary|✓|OAS2,OAS3
|Boolean|✓|OAS2,OAS3
|Date|✓|OAS2,OAS3
|DateTime|✓|OAS2,OAS3
|Password|✓|OAS2,OAS3
|File|✓|OAS2
|Uuid|✗|
|Array|✓|OAS2,OAS3
|Null|✗|OAS3
|AnyType|✗|OAS2,OAS3
|Object|✓|OAS2,OAS3
|Maps|✓|ToolingExtension
|CollectionFormat|✓|OAS2
|CollectionFormatMulti|✓|OAS2
|Enum|✓|OAS2,OAS3
|ArrayOfEnum|✓|ToolingExtension
|ArrayOfModel|✓|ToolingExtension
|ArrayOfCollectionOfPrimitives|✓|ToolingExtension
|ArrayOfCollectionOfModel|✓|ToolingExtension
|ArrayOfCollectionOfEnum|✓|ToolingExtension
|MapOfEnum|✓|ToolingExtension
|MapOfModel|✓|ToolingExtension
|MapOfCollectionOfPrimitives|✓|ToolingExtension
|MapOfCollectionOfModel|✓|ToolingExtension
|MapOfCollectionOfEnum|✓|ToolingExtension
### Documentation Feature
| Name | Supported | Defined By |
| ---- | --------- | ---------- |
|Readme|✓|ToolingExtension
|Model|✓|ToolingExtension
|Api|✓|ToolingExtension
### Global Feature
| Name | Supported | Defined By |
| ---- | --------- | ---------- |
|Host|✓|OAS2,OAS3
|BasePath|✓|OAS2,OAS3
|Info|✓|OAS2,OAS3
|Schemes|✗|OAS2,OAS3
|PartialSchemes|✓|OAS2,OAS3
|Consumes|✓|OAS2
|Produces|✓|OAS2
|ExternalDocumentation|✓|OAS2,OAS3
|Examples|✓|OAS2,OAS3
|XMLStructureDefinitions|✗|OAS2,OAS3
|MultiServer|✗|OAS3
|ParameterizedServer|✗|OAS3
|ParameterStyling|✗|OAS3
|Callbacks|✗|OAS3
|LinkObjects|✗|OAS3
### Parameter Feature
| Name | Supported | Defined By |
| ---- | --------- | ---------- |
|Path|✓|OAS2,OAS3
|Query|✓|OAS2,OAS3
|Header|✓|OAS2,OAS3
|Body|✓|OAS2
|FormUnencoded|✓|OAS2
|FormMultipart|✓|OAS2
|Cookie|✗|OAS3
### Schema Support Feature
| Name | Supported | Defined By |
| ---- | --------- | ---------- |
|Simple|✓|OAS2,OAS3
|Composite|✓|OAS2,OAS3
|Polymorphism|✓|OAS2,OAS3
|Union|✗|OAS3
|allOf|✗|OAS2,OAS3
|anyOf|✗|OAS3
|oneOf|✗|OAS3
|not|✗|OAS3
### Security Feature
| Name | Supported | Defined By |
| ---- | --------- | ---------- |
|BasicAuth|✓|OAS2,OAS3
|ApiKey|✓|OAS2,OAS3
|OpenIDConnect|✗|OAS3
|BearerToken|✓|OAS3
|OAuth2_Implicit|✓|OAS2,OAS3
|OAuth2_Password|✗|OAS2,OAS3
|OAuth2_ClientCredentials|✗|OAS2,OAS3
|OAuth2_AuthorizationCode|✗|OAS2,OAS3
### Wire Format Feature
| Name | Supported | Defined By |
| ---- | --------- | ---------- |
|JSON|✓|OAS2,OAS3
|XML|✓|OAS2,OAS3
|PROTOBUF|✗|ToolingExtension
|Custom|✓|OAS2,OAS3