A library for programmatically creating programs that interface with data exposed by the official Guild Wars 2 API.
This library contains information about the structure and data-types of the API. This information can be used to generate custom API clients or other programs which require definitions of the API.
This library requires Java 8 or later. (Keep in mind that this library is intended to be used for static code-generation only. This requirement is not relevant for the generated output.)
Some API endpoints provide account-specific data. To query these endpoints, an API key must be passed to authenticate. Further, each API key has a custom set of permissions which determine what information can be retrieved using the key.
An API key may be passed along a request by using the access_token
query
parameter, or using the Authorization: Bearer ${API Key}
request header
(recommended).
E.g. https://api.guildwars2.com/v2/account/inventory?access_token=${API Key}
returns the shared inventory of the key's owner iff the key has the ACCOUNT
and INVENTORY
permissions.
The Guild Wars 2 API supports localization (but the actual supported languages differ based on the API version).
Language | API v1 | API v2 |
---|---|---|
Chinese (zh) | - | ✔ |
English (en) | ✔ | ✔ |
French (fr) | ✔ | ✔ |
German (de) | ✔ | ✔ |
Spanish (es) | ✔ | ✔ |
Localized data can be accessed by setting the lang
query parameter to the
language code. (The API makes some effort to guess the language based on your
IP geolocation. Hence, it is recommended to always request a language explicitly
for consistent results.)
E.g. use https://api.guildwars2.com/v2/items?id=43766&lang=en
to request
english information:
{
"name": "Tome of Knowledge",
"description": "Grants one character level if below level 80 or one spirit shard if level 80.\nOnly usable in PvE and WvW.",
"type": "Consumable",
"level": 0,
"rarity": "Exotic"
// additional fields were excluded from this example
}
and https://api.guildwars2.com/v2/items?id=43766&lang=de
to request
german information:
{
"name": "Foliant des Wissens",
"description": "Lässt Euren Charakter eine Stufe aufsteigen, wenn er Stufe 80 noch nicht erreicht hat, oder gewährt eine Geister-Scherbe, wenn er auf Stufe 80 ist.\nNur im PvE und WvW verwendbar.",
"type": "Consumable",
"level": 0,
"rarity": "Exotic"
// additional fields were excluded from this example
}
Generally, API endpoints are structured in two different ways: There are 1. "blob"-style endpoints which return just
return all relevant data (e.g. /v2/build
) and 2. indexed endpoints which return indices for many datums (e.g.
v2/items
).
Indexed endpoints provide a couple of different parameters to retrieve the data for a given set of IDs. These are
referred to as QueryTypes
throughout documentation and source of this project. Possible query types are:
- querying IDs (e.g.
/v2/items
), - querying by ID (e.g.
/v2/items?id={id}
), - querying by IDs (e.g.
/v2/items?ids={ids; ","-separated}
), and - querying by page (e.g.
/v2/items?page={index}&page_size={size}
).
Some endpoints support a specialized version of this query type that can be used to retrieve all datums at once (e.g.
/v2/legends?ids=all
).
When querying by page, the response contains additional header elements:
x-page-size
which is the requested page size,x-page-total
which is the total amount of pages for the given size, andx-result-count
which is the number of results on the returned page.
The library defines several entry-points for retrieving all the information necessary to generate implementations for each API version:
com.gw2tb.apigen.APIVersion#getV1(Set<APIv1Endpoint>)
,com.gw2tb.apigen.APIVersion#getV2(Set<APIv2Endpoint>)
and the data exposed by Guild Wars 2 via MumbleLink:
com.gw2tb.apigen.MumbleLink.MUMBLELINK_IDENTITY_DEFINITION
.
These entry-points expose the types and queries supported by the API. Types are defined as "schema types" - an abstraction that contains necessary information about the structure of the APIs data-types. It is recommended to generate a one-to-one mapping between schema mappings and appropriate language or library constructs.
For a better understanding of schema types and how to work with them, please refer to the user guide.
This project uses Gradle's toolchain support to detect and select the JDKs required to run the build. Please refer to the build scripts to find out which toolchains are requested.
An installed JDK 1.8 (or later) is required to use Gradle.
Once the setup is complete, invoke the respective Gradle tasks using the following command on Unix/macOS:
./gradlew <tasks>
or the following command on Windows:
gradlew <tasks>
Important Gradle tasks to remember are:
clean
- clean build resultsbuild
- assemble and test the Java librarypublishToMavenLocal
- build and install all public artifacts to the local maven repository
Additionally tasks
may be used to print a list of all available tasks.
From time to time endpoints are added or updated. These changes need to be manually integrated into the API definition. The API definition files use a custom DSL for defining endpoint that attempts to be as concise as possible while also providing the additional benefits of type-safety.
Adding a new endpoint is almost as simple as adding a few lines of Kotlin code
to the appropriate file. For example, the /v2/build
endpoint looks as follows:
val BUILD_ID = "BuildID"(INTEGER)
"/Build"(summary = "Returns the current build ID.") {
schema(record(name = "Build", description = "Information about the current game build.") {
CamelCase("id").."ID"(BUILD_ID, "the current build ID")
})
}
Each endpoint definition must contain a summary
describing what the endpoint
does, and a schema
which defines the shape of the returned data.
For further information on which functions to use in what situations, please refer to the documentation of the developer guide.
Project | Language |
---|---|
GW2APIClient | Kotlin (Multiplatform) |
Your project uses the api generator and is not listed here? Feel free to open a pull request to have it added!
Copyright (c) 2019-2022 Leon Linhart
Permission is hereby granted, free of charge, to any person obtaining a copy
of this software and associated documentation files (the "Software"), to deal
in the Software without restriction, including without limitation the rights
to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
copies of the Software, and to permit persons to whom the Software is
furnished to do so, subject to the following conditions:
The above copyright notice and this permission notice shall be included in all
copies or substantial portions of the Software.
THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
SOFTWARE.
©2010–2018 ArenaNet, LLC. All rights reserved. Guild Wars, Guild Wars 2, Heart of Thorns, Guild Wars 2: Path of Fire, ArenaNet, NCSOFT, the Interlocking NC Logo, and all associated logos and designs are trademarks or registered trademarks of NCSOFT Corporation. All other trademarks are the property of their respective owners.
As taken from Guild Wars 2 Content Terms of Use on 2019-09-09 17:31 CET.