97 lines
2 KiB
Markdown
97 lines
2 KiB
Markdown
|
---
|
||
|
|
title: Configuration
|
||
|
|
description: Constructor options, runtime settings, and feature flags.
|
||
|
|
---
|
||
|
|
|
||
|
|
# Configuration
|
||
|
|
|
||
|
|
CoreGO uses two different configuration layers:
|
||
|
|
|
||
|
|
- constructor-time `core.Options`
|
||
|
|
- runtime `c.Config()`
|
||
|
|
|
||
|
|
## Constructor-Time Options
|
||
|
|
|
||
|
|
```go
|
||
|
|
c := core.New(core.Options{
|
||
|
|
{Key: "name", Value: "agent-workbench"},
|
||
|
|
})
|
||
|
|
```
|
||
|
|
|
||
|
|
### Current Behavior
|
||
|
|
|
||
|
|
- `New` accepts `opts ...Options`
|
||
|
|
- the current implementation copies only the first `Options` slice
|
||
|
|
- the `name` key is applied to `c.App().Name`
|
||
|
|
|
||
|
|
If you need more constructor data, put it in the first `core.Options` slice.
|
||
|
|
|
||
|
|
## Runtime Settings with `Config`
|
||
|
|
|
||
|
|
Use `c.Config()` for mutable process settings.
|
||
|
|
|
||
|
|
```go
|
||
|
|
c.Config().Set("workspace.root", "/srv/workspaces")
|
||
|
|
c.Config().Set("max_agents", 8)
|
||
|
|
c.Config().Set("debug", true)
|
||
|
|
```
|
||
|
|
|
||
|
|
Read them back with:
|
||
|
|
|
||
|
|
```go
|
||
|
|
root := c.Config().String("workspace.root")
|
||
|
|
maxAgents := c.Config().Int("max_agents")
|
||
|
|
debug := c.Config().Bool("debug")
|
||
|
|
raw := c.Config().Get("workspace.root")
|
||
|
|
```
|
||
|
|
|
||
|
|
### Important Details
|
||
|
|
|
||
|
|
- missing keys return zero values
|
||
|
|
- typed accessors do not coerce strings into ints or bools
|
||
|
|
- `Get` returns `core.Result`
|
||
|
|
|
||
|
|
## Feature Flags
|
||
|
|
|
||
|
|
`Config` also tracks named feature flags.
|
||
|
|
|
||
|
|
```go
|
||
|
|
c.Config().Enable("workspace.templates")
|
||
|
|
c.Config().Enable("agent.review")
|
||
|
|
c.Config().Disable("agent.review")
|
||
|
|
```
|
||
|
|
|
||
|
|
Read them with:
|
||
|
|
|
||
|
|
```go
|
||
|
|
enabled := c.Config().Enabled("workspace.templates")
|
||
|
|
features := c.Config().EnabledFeatures()
|
||
|
|
```
|
||
|
|
|
||
|
|
Feature names are case-sensitive.
|
||
|
|
|
||
|
|
## `ConfigVar[T]`
|
||
|
|
|
||
|
|
Use `ConfigVar[T]` when you need a typed value that can also represent “set versus unset”.
|
||
|
|
|
||
|
|
```go
|
||
|
|
theme := core.NewConfigVar("amber")
|
||
|
|
|
||
|
|
if theme.IsSet() {
|
||
|
|
fmt.Println(theme.Get())
|
||
|
|
}
|
||
|
|
|
||
|
|
theme.Unset()
|
||
|
|
```
|
||
|
|
|
||
|
|
This is useful for package-local state where zero values are not enough to describe configuration presence.
|
||
|
|
|
||
|
|
## Recommended Pattern
|
||
|
|
|
||
|
|
Use the two layers for different jobs:
|
||
|
|
|
||
|
|
- put startup identity such as `name` into `core.Options`
|
||
|
|
- put mutable runtime values and feature switches into `c.Config()`
|
||
|
|
|
||
|
|
That keeps constructor intent separate from live process state.
|