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feat: use caarlos0/env for config

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This commit is contained in:
Toby Padilla 2025-04-24 15:03:08 -06:00 • committed by Toby Padilla
commit b2a4b33e7d
5 changed files with 26 additions and 55 deletions
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1
.gitignore vendored
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@ -1 +1,2 @@
build/*
data

17
README.md
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@ -57,7 +57,7 @@ This will create the `registry` binary in the `build/` directory.
Alternatively, run
```bash
DATABASE_URL="mongodb://localhost:27017" ./build/registry
MCP_REGISTRY_DATABASE_URL="mongodb://localhost:27017" ./build/registry
```
By default, the service will run on `http://localhost:8080`.
@ -83,7 +83,7 @@ For development and testing purposes, the application includes a fake service wi
1. Set the environment to "test":
```bash
export APP_ENV=test
export MCP_REGISTRY_ENVIRONMENT=test
./build/registry
```
@ -183,19 +183,17 @@ Simple ping endpoint that returns environment configuration information:
}
```
## Configuration
The service can be configured using environment variables:
| Variable | Description | Default |
|----------|-------------|---------|
| `APP_ENV` | Application environment (production, test) | `production` |
| `APP_VERSION`| Application version | `dev` |
| `DATABASE_URL` | MongoDB connection string | `mongodb://localhost:27017` |
| `DATABASE_NAME` | MongoDB database name | `mcp-registry` |
| `COLLECTION_NAME` | MongoDB collection name for server registry | `servers_v2` |
| `MCP_REGISTRY_ENVIRONMENT` | Application environment (production, test) | `production` |
| `MCP_REGISTRY_APP_VERSION` | Application version | `dev` |
| `MCP_REGISTRY_DATABASE_URL` | MongoDB connection string | `mongodb://localhost:27017` |
| `MCP_REGISTRY_DATABASE_NAME` | MongoDB database name | `mcp-registry` |
| `MCP_REGISTRY_COLLECTION_NAME` | MongoDB collection name for server registry | `servers_v2` |
## Testing
@ -215,4 +213,3 @@ You can specify specific endpoints to test:
## License
See the [LICENSE](LICENSE) file for details.

1
go.mod
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@ -11,6 +11,7 @@ require (
require (
github.com/KyleBanks/depth v1.2.1 // indirect
github.com/caarlos0/env/v11 v11.3.1 // indirect
github.com/go-openapi/jsonpointer v0.21.1 // indirect
github.com/go-openapi/jsonreference v0.21.0 // indirect
github.com/go-openapi/spec v0.21.0 // indirect

2
go.sum
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@ -1,5 +1,7 @@
github.com/KyleBanks/depth v1.2.1 h1:5h8fQADFrWtarTdtDudMmGsC7GPbOAu6RVB3ffsVFHc=
github.com/KyleBanks/depth v1.2.1/go.mod h1:jzSb9d0L43HxTQfT+oSA1EEp2q+ne2uh6XgeJcm8brE=
github.com/caarlos0/env/v11 v11.3.1 h1:cArPWC15hWmEt+gWk7YBi7lEXTXCvpaSdCiZE2X5mCA=
github.com/caarlos0/env/v11 v11.3.1/go.mod h1:qupehSf/Y0TUTsxKywqRt/vJjN5nz6vauiYEUUr8P4U=
github.com/davecgh/go-spew v1.1.1 h1:vj9j/u1bqnvCEfJOwUhtlOARqs3+rkHYY13jYWTU97c=
github.com/davecgh/go-spew v1.1.1/go.mod h1:J7Y8YcW2NihsgmVo/mv3lAwl/skON4iLHjSsI+c5H38=
github.com/go-openapi/jsonpointer v0.21.1 h1:whnzv/pNXtK2FbX/W9yJfRmE2gsmkfahjMKB0fZvcic=

60
internal/config/config.go
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@ -1,56 +1,26 @@
package config
import "os"
import (
"github.com/caarlos0/env/v11"
)
// Config holds the application configuration
type Config struct {
ServerAddress string
DatabaseURL string
DatabaseName string
CollectionName string
LogLevel string
Environment string // Added environment field
Version string // Application version
ServerAddress string `env:"MCP_REGISTRY_SERVER_ADDRESS" envDefault:":8080"`
DatabaseURL string `env:"MCP_REGISTRY_DATABASE_URL" envDefault:"mongodb://localhost:27017"`
DatabaseName string `env:"MCP_REGISTRY_DATABASE_NAME" envDefault:"mcp-registry"`
CollectionName string `env:"MCP_REGISTRY_COLLECTION_NAME" envDefault:"servers_v2"`
LogLevel string `env:"MCP_REGISTRY_LOG_LEVEL" envDefault:"info"`
Environment string `env:"MCP_REGISTRY_ENVIRONMENT" envDefault:"production"`
Version string `env:"MCP_REGISTRY_VERSION" envDefault:"dev"`
}
// NewConfig creates a new configuration with default values
func NewConfig() *Config {
// Get environment from OS environment variable or default to "production"
env := os.Getenv("APP_ENV")
if env == "" {
env = "production"
}
// Get version from environment variable or default to "dev"
version := os.Getenv("APP_VERSION")
if version == "" {
version = "dev"
}
// Get database URL from environment variable or default to localhost
dbURL := os.Getenv("DATABASE_URL")
if dbURL == "" {
dbURL = "localhost:5432"
}
// Get database name from environment variable or default to "mcp_registry"
dbName := os.Getenv("DATABASE_NAME")
if dbName == "" {
dbName = "mcp-registry"
}
// Get collection name from environment variable or default to "entries"
collectionName := os.Getenv("COLLECTION_NAME")
if collectionName == "" {
collectionName = "servers_v2"
}
return &Config{
ServerAddress: ":8080",
DatabaseURL: dbURL,
DatabaseName: dbName,
CollectionName: collectionName,
LogLevel: "info",
Environment: env,
Version: version,
var cfg Config
err := env.Parse(&cfg)
if err != nil {
panic(err)
}
return &cfg
}