@acala-network/acala-transfers-subql 中文文档教程
SubQuery - Starter Package
Starter Package 是一个示例,您可以将其用作开发 SubQuery 项目的起点。 SubQuery 包定义了 SubQuery 将从 Substrate 区块链索引哪些数据,以及它将如何存储这些数据。
Preparation
Environment
Typescript 是编译项目和定义类型所必需的。
SubQuery CLI 和生成的项目都具有依赖关系,并且需要 Node。
Install the SubQuery CLI
使用 NPM 在您的终端上全局安装 SubQuery CLI:
npm install -g @subql/cli
运行帮助以查看 CLI 提供的可用命令和用法
subql help
Initialize the starter package
在您要创建 SubQuery 项目的目录中,只需将 project-name
替换为您的项目name 并运行命令:
subql init --starter project-name
然后你应该看到目录中已经创建了一个包含你的项目名称的文件夹,你可以将其用作项目的起点。 这些文件应该与 目录结构 中的相同。
最后,在项目目录下,运行以下命令安装所有依赖项。
yarn install
Configure your project
在启动包中,我们提供了一个简单的项目配置示例。 您将主要处理以下文件:
- The Manifest in
project.yaml
- The GraphQL Schema in
schema.graphql
- The Mapping functions in
src/mappings/
directory
有关如何编写子查询的更多信息, 查看我们关于定义子查询的文档部分
Code generation
为了索引您的子查询项目,必须先构建您的项目。 在项目目录下运行此命令。
yarn codegen
Build the project
为了将您的 SubQuery 项目部署到我们的托管服务,必须在上传前打包您的配置。 从项目的根目录运行 pack 命令将自动生成一个 your-project-name.tgz
文件。
yarn build
Indexing and Query
Run required systems in docker
在项目目录下运行以下命令:
docker-compose pull && docker-compose up
Query the project
打开浏览器并前往 http://localhost:3000
。
最后,您应该会在资源管理器中看到一个 GraphQL playground 以及准备查询的模式。
对于subql-starter
项目,您可以尝试使用以下代码进行查询,感受一下它的工作原理。
{
query{
starterEntities(first:10){
nodes{
field1,
field2,
field3
}
}
}
}
SubQuery - Starter Package
The Starter Package is an example that you can use as a starting point for developing your SubQuery project. A SubQuery package defines which data The SubQuery will index from the Substrate blockchain, and how it will store it.
Preparation
Environment
Typescript are required to compile project and define types.
Both SubQuery CLI and generated Project have dependencies and require Node.
Install the SubQuery CLI
Install SubQuery CLI globally on your terminal by using NPM:
npm install -g @subql/cli
Run help to see available commands and usage provide by CLI
subql help
Initialize the starter package
Inside the directory in which you want to create the SubQuery project, simply replace project-name
with your project name and run the command:
subql init --starter project-name
Then you should see a folder with your project name has been created inside the directory, you can use this as the start point of your project. And the files should be identical as in the Directory Structure.
Last, under the project directory, run following command to install all the dependency.
yarn install
Configure your project
In the starter package, we have provided a simple example of project configuration. You will be mainly working on the following files:
- The Manifest in
project.yaml
- The GraphQL Schema in
schema.graphql
- The Mapping functions in
src/mappings/
directory
For more information on how to write the SubQuery, check out our doc section on Define the SubQuery
Code generation
In order to index your SubQuery project, it is mandatory to build your project first. Run this command under the project directory.
yarn codegen
Build the project
In order to deploy your SubQuery project to our hosted service, it is mandatory to pack your configuration before upload. Run pack command from root directory of your project will automatically generate a your-project-name.tgz
file.
yarn build
Indexing and Query
Run required systems in docker
Under the project directory run following command:
docker-compose pull && docker-compose up
Query the project
Open your browser and head to http://localhost:3000
.
Finally, you should see a GraphQL playground is showing in the explorer and the schemas that ready to query.
For the subql-starter
project, you can try to query with the following code to get a taste of how it works.
{
query{
starterEntities(first:10){
nodes{
field1,
field2,
field3
}
}
}
}