README
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TFLint plugin SDK
TFLint plugin SDK for building custom rules.
NOTE: This plugin system is experimental. This means that API compatibility is frequently broken.
Requirements
- TFLint v0.24+
- Go v1.15
Usage
Please refer to tflint-ruleset-template for an example plugin implementation using this SDK.
For more details on the API, see tflint and helper packages on pkg.go.dev.
Architecture
This plugin system uses go-plugin. TFLint launches the plugin as a sub-process and communicates with the plugin over RPC. The plugin acts as a server, while TFLint acts as a client that sends inspection requests to the plugin.
On the other hand, the plugin sends various requests to a server (TFLint) to get detailed runtime contexts (e.g. variables and expressions). This means that TFLint and plugins can act as both a server and a client.
Directories
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| Path | Synopsis |
|---|---|
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Package helper contains implementations for plugin testing.
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Package helper contains implementations for plugin testing. |
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Package plugin contains the implementations needed to make the built binary act as a plugin.
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Package plugin contains the implementations needed to make the built binary act as a plugin. |
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Package terraform contains structures for Terraform's alternative representations.
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Package terraform contains structures for Terraform's alternative representations. |
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Package tflint contains implementations and interfaces for plugin developers.
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Package tflint contains implementations and interfaces for plugin developers. |
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client
Package client contains the implementations required for plugins to act as a client.
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Package client contains the implementations required for plugins to act as a client. |
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server
Package server contains the interfaces that the host process should satisfy.
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Package server contains the interfaces that the host process should satisfy. |