diff --git a/example/console-example-refresh/README.md b/example/console-example-refresh/README.md new file mode 100644 index 0000000..d8b143f --- /dev/null +++ b/example/console-example-refresh/README.md @@ -0,0 +1,56 @@ +# Azure App Configuration Console Refresh Example + +This example demonstrates how to use the refresh functionality of Azure App Configuration in a console/command-line application. + +## Overview + +This console application: + +1. Loads configuration values from Azure App Configuration +2. Binds them to target configuration struct +3. Automatically refreshes the configuration when changed in Azure App Configuration + +## Running the Example + +### Prerequisites + +You need [an Azure subscription](https://azure.microsoft.com/free/) and the following Azure resources to run the examples: + +- [Azure App Configuration store](https://learn.microsoft.com/en-us/azure/azure-app-configuration/quickstart-azure-app-configuration-create?tabs=azure-portal) + +The examples retrieve credentials to access your App Configuration store from environment variables. + +### Add key-values + +Add the following key-values to the App Configuration store and leave **Label** and **Content Type** with their default values: + +| Key | Value | +|------------------------|----------------| +| *Config.Message* | *Hello World!* | +| *Config.Font.Color* | *blue* | +| *Config.Font.Size* | *12* | + +### Setup + +Set the connection string as an environment variable: + +```bash +# Windows +set AZURE_APPCONFIG_CONNECTION_STRING=your-connection-string + +# Linux/macOS +export AZURE_APPCONFIG_CONNECTION_STRING=your-connection-string +``` + +### Run the Application + +```bash +go run main.go +``` + +### Testing the Refresh Functionality + +1. Start the application +2. While it's running, modify the values in your Azure App Configuration store +3. Within 10 seconds (the configured refresh interval), the application should detect and apply the changes +4. You don't need to restart the application to see the updated values diff --git a/example/console-example-refresh/go.mod b/example/console-example-refresh/go.mod new file mode 100644 index 0000000..0548ffa --- /dev/null +++ b/example/console-example-refresh/go.mod @@ -0,0 +1,19 @@ +module console-example-refresh + +go 1.23.2 + +require github.com/Azure/AppConfiguration-GoProvider/azureappconfiguration v0.0.0-00010101000000-000000000000 + +require ( + github.com/Azure/azure-sdk-for-go/sdk/azcore v1.18.0 // indirect + github.com/Azure/azure-sdk-for-go/sdk/data/azappconfig v1.2.0 // indirect + github.com/Azure/azure-sdk-for-go/sdk/internal v1.11.1 // indirect + github.com/Azure/azure-sdk-for-go/sdk/security/keyvault/azsecrets v1.3.1 // indirect + github.com/Azure/azure-sdk-for-go/sdk/security/keyvault/internal v1.1.1 // indirect + github.com/go-viper/mapstructure/v2 v2.2.1 // indirect + golang.org/x/net v0.39.0 // indirect + golang.org/x/sync v0.13.0 // indirect + golang.org/x/text v0.24.0 // indirect +) + +replace github.com/Azure/AppConfiguration-GoProvider/azureappconfiguration => ..\..\azureappconfiguration diff --git a/example/console-example-refresh/go.sum b/example/console-example-refresh/go.sum new file mode 100644 index 0000000..37ed2d9 --- /dev/null +++ b/example/console-example-refresh/go.sum @@ -0,0 +1,44 @@ +github.com/Azure/azure-sdk-for-go/sdk/azcore v1.18.0 h1:Gt0j3wceWMwPmiazCa8MzMA0MfhmPIz0Qp0FJ6qcM0U= +github.com/Azure/azure-sdk-for-go/sdk/azcore v1.18.0/go.mod h1:Ot/6aikWnKWi4l9QB7qVSwa8iMphQNqkWALMoNT3rzM= +github.com/Azure/azure-sdk-for-go/sdk/azidentity v1.9.0 h1:OVoM452qUFBrX+URdH3VpR299ma4kfom0yB0URYky9g= +github.com/Azure/azure-sdk-for-go/sdk/azidentity v1.9.0/go.mod h1:kUjrAo8bgEwLeZ/CmHqNl3Z/kPm7y6FKfxxK0izYUg4= +github.com/Azure/azure-sdk-for-go/sdk/data/azappconfig v1.2.0 h1:uU4FujKFQAz31AbWOO3INV9qfIanHeIUSsGhRlcJJmg= +github.com/Azure/azure-sdk-for-go/sdk/data/azappconfig v1.2.0/go.mod h1:qr3M3Oy6V98VR0c5tCHKUpaeJTRQh6KYzJewRtFWqfc= +github.com/Azure/azure-sdk-for-go/sdk/internal v1.11.1 h1:FPKJS1T+clwv+OLGt13a8UjqeRuh0O4SJ3lUriThc+4= +github.com/Azure/azure-sdk-for-go/sdk/internal v1.11.1/go.mod h1:j2chePtV91HrC22tGoRX3sGY42uF13WzmmV80/OdVAA= +github.com/Azure/azure-sdk-for-go/sdk/security/keyvault/azsecrets v1.3.1 h1:mrkDCdkMsD4l9wjFGhofFHFrV43Y3c53RSLKOCJ5+Ow= +github.com/Azure/azure-sdk-for-go/sdk/security/keyvault/azsecrets v1.3.1/go.mod h1:hPv41DbqMmnxcGralanA/kVlfdH5jv3T4LxGku2E1BY= +github.com/Azure/azure-sdk-for-go/sdk/security/keyvault/internal v1.1.1 h1:bFWuoEKg+gImo7pvkiQEFAc8ocibADgXeiLAxWhWmkI= +github.com/Azure/azure-sdk-for-go/sdk/security/keyvault/internal v1.1.1/go.mod h1:Vih/3yc6yac2JzU4hzpaDupBJP0Flaia9rXXrU8xyww= +github.com/AzureAD/microsoft-authentication-library-for-go v1.4.2 h1:oygO0locgZJe7PpYPXT5A29ZkwJaPqcva7BVeemZOZs= +github.com/AzureAD/microsoft-authentication-library-for-go v1.4.2/go.mod h1:wP83P5OoQ5p6ip3ScPr0BAq0BvuPAvacpEuSzyouqAI= +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-viper/mapstructure/v2 v2.2.1 h1:ZAaOCxANMuZx5RCeg0mBdEZk7DZasvvZIxtHqx8aGss= +github.com/go-viper/mapstructure/v2 v2.2.1/go.mod h1:oJDH3BJKyqBA2TXFhDsKDGDTlndYOZ6rGS0BRZIxGhM= +github.com/golang-jwt/jwt/v5 v5.2.2 h1:Rl4B7itRWVtYIHFrSNd7vhTiz9UpLdi6gZhZ3wEeDy8= +github.com/golang-jwt/jwt/v5 v5.2.2/go.mod h1:pqrtFR0X4osieyHYxtmOUWsAWrfe1Q5UVIyoH402zdk= +github.com/google/uuid v1.6.0 h1:NIvaJDMOsjHA8n1jAhLSgzrAzy1Hgr+hNrb57e+94F0= +github.com/google/uuid v1.6.0/go.mod h1:TIyPZe4MgqvfeYDBFedMoGGpEw/LqOeaOT+nhxU+yHo= +github.com/kylelemons/godebug v1.1.0 h1:RPNrshWIDI6G2gRW9EHilWtl7Z6Sb1BR0xunSBf0SNc= +github.com/kylelemons/godebug v1.1.0/go.mod h1:9/0rRGxNHcop5bhtWyNeEfOS8JIWk580+fNqagV/RAw= +github.com/pkg/browser v0.0.0-20240102092130-5ac0b6a4141c h1:+mdjkGKdHQG3305AYmdv1U2eRNDiU2ErMBj1gwrq8eQ= +github.com/pkg/browser v0.0.0-20240102092130-5ac0b6a4141c/go.mod h1:7rwL4CYBLnjLxUqIJNnCWiEdr3bn6IUYi15bNlnbCCU= +github.com/pmezard/go-difflib v1.0.0 h1:4DBwDE0NGyQoBHbLQYPwSUPoCMWR5BEzIk/f1lZbAQM= +github.com/pmezard/go-difflib v1.0.0/go.mod h1:iKH77koFhYxTK1pcRnkKkqfTogsbg7gZNVY4sRDYZ/4= +github.com/stretchr/objx v0.5.2 h1:xuMeJ0Sdp5ZMRXx/aWO6RZxdr3beISkG5/G/aIRr3pY= +github.com/stretchr/objx v0.5.2/go.mod h1:FRsXN1f5AsAjCGJKqEizvkpNtU+EGNCLh3NxZ/8L+MA= +github.com/stretchr/testify v1.10.0 h1:Xv5erBjTwe/5IxqUQTdXv5kgmIvbHo3QQyRwhJsOfJA= +github.com/stretchr/testify v1.10.0/go.mod h1:r2ic/lqez/lEtzL7wO/rwa5dbSLXVDPFyf8C91i36aY= +golang.org/x/crypto v0.37.0 h1:kJNSjF/Xp7kU0iB2Z+9viTPMW4EqqsrywMXLJOOsXSE= +golang.org/x/crypto v0.37.0/go.mod h1:vg+k43peMZ0pUMhYmVAWysMK35e6ioLh3wB8ZCAfbVc= +golang.org/x/net v0.39.0 h1:ZCu7HMWDxpXpaiKdhzIfaltL9Lp31x/3fCP11bc6/fY= +golang.org/x/net v0.39.0/go.mod h1:X7NRbYVEA+ewNkCNyJ513WmMdQ3BineSwVtN2zD/d+E= +golang.org/x/sync v0.13.0 h1:AauUjRAJ9OSnvULf/ARrrVywoJDy0YS2AwQ98I37610= +golang.org/x/sync v0.13.0/go.mod h1:1dzgHSNfp02xaA81J2MS99Qcpr2w7fw1gpm99rleRqA= +golang.org/x/sys v0.33.0 h1:q3i8TbbEz+JRD9ywIRlyRAQbM0qF7hu24q3teo2hbuw= +golang.org/x/sys v0.33.0/go.mod h1:BJP2sWEmIv4KK5OTEluFJCKSidICx8ciO85XgH3Ak8k= +golang.org/x/text v0.24.0 h1:dd5Bzh4yt5KYA8f9CJHCP4FB4D51c2c6JvN37xJJkJ0= +golang.org/x/text v0.24.0/go.mod h1:L8rBsPeo2pSS+xqN0d5u2ikmjtmoJbDBT1b7nHvFCdU= +gopkg.in/yaml.v3 v3.0.1 h1:fxVm/GzAzEWqLHuvctI91KS9hhNmmWOoWu0XTYJS7CA= +gopkg.in/yaml.v3 v3.0.1/go.mod h1:K4uyk7z7BCEPqu6E+C64Yfv1cQ7kz7rIZviUmN+EgEM= diff --git a/example/console-example-refresh/main.go b/example/console-example-refresh/main.go new file mode 100644 index 0000000..897fa74 --- /dev/null +++ b/example/console-example-refresh/main.go @@ -0,0 +1,137 @@ +package main + +import ( + "context" + "fmt" + "log" + "os" + "os/signal" + "syscall" + "time" + + "github.com/Azure/AppConfiguration-GoProvider/azureappconfiguration" +) + +type Config struct { + Font Font + Message string +} + +type Font struct { + Color string + Size int +} + +// initializeAppConfiguration handles loading the configuration from Azure App Configuration +func initializeAppConfiguration() (*azureappconfiguration.AzureAppConfiguration, error) { + // Get connection string from environment variable + connectionString := os.Getenv("AZURE_APPCONFIG_CONNECTION_STRING") + + // Options setup + options := &azureappconfiguration.Options{ + Selectors: []azureappconfiguration.Selector{ + { + KeyFilter: "Config.*", + }, + }, + // Remove the prefix when mapping to struct fields + TrimKeyPrefixes: []string{"Config."}, + // Enable refresh every 10 seconds + RefreshOptions: azureappconfiguration.KeyValueRefreshOptions{ + Enabled: true, + Interval: 10 * time.Second, + }, + } + + authOptions := azureappconfiguration.AuthenticationOptions{ + ConnectionString: connectionString, + } + + // Create configuration provider with timeout + ctx, cancel := context.WithTimeout(context.Background(), 10*time.Second) + defer cancel() + + return azureappconfiguration.Load(ctx, authOptions, options) +} + +// displayConfig prints the current configuration values +func displayConfig(config Config) { + fmt.Println("\nCurrent Configuration Values:") + fmt.Println("--------------------") + fmt.Printf("Font Color: %s\n", config.Font.Color) + fmt.Printf("Font Size: %d\n", config.Font.Size) + fmt.Printf("Message: %s\n", config.Message) + fmt.Println("--------------------") +} + +func main() { + fmt.Println("Azure App Configuration - Console Refresh Example") + fmt.Println("----------------------------------------") + + // Load configuration + fmt.Println("Loading configuration from Azure App Configuration...") + appCfgProvider, err := initializeAppConfiguration() + if err != nil { + log.Fatalf("Error loading configuration: %s", err) + } + + // Parse initial configuration into struct + var config Config + err = appCfgProvider.Unmarshal(&config, nil) + if err != nil { + log.Fatalf("Error unmarshalling configuration: %s", err) + } + + // Display the initial configuration + displayConfig(config) + + // Register refresh callback to update and display the configuration + appCfgProvider.OnRefreshSuccess(func() { + fmt.Println("\nšŸ”„ Configuration changed! Updating values...") + + // Re-unmarshal the configuration + var updatedConfig Config + err := appCfgProvider.Unmarshal(&updatedConfig, nil) + if err != nil { + log.Printf("Error unmarshalling updated configuration: %s", err) + return + } + + // Update our working config + config = updatedConfig + + // Display the updated configuration + displayConfig(config) + }) + + // Setup a channel to listen for termination signals + done := make(chan os.Signal, 1) + signal.Notify(done, syscall.SIGINT, syscall.SIGTERM) + + fmt.Println("\nWaiting for configuration changes...") + fmt.Println("(Update values in Azure App Configuration to see refresh in action)") + fmt.Println("Press Ctrl+C to exit") + + // Start a ticker to periodically trigger refresh + ticker := time.NewTicker(5 * time.Second) + defer ticker.Stop() + + // Keep the application running until terminated + for { + select { + case <-ticker.C: + // Trigger refresh in background + go func() { + ctx, cancel := context.WithTimeout(context.Background(), 5*time.Second) + defer cancel() + + if err := appCfgProvider.Refresh(ctx); err != nil { + log.Printf("Error refreshing configuration: %s", err) + } + }() + case <-done: + fmt.Println("\nExiting...") + return + } + } +} diff --git a/example/gin-example-refresh/README.md b/example/gin-example-refresh/README.md new file mode 100644 index 0000000..af55919 --- /dev/null +++ b/example/gin-example-refresh/README.md @@ -0,0 +1,58 @@ +# Azure App Configuration Gin Web Refresh Example + +This example demonstrates how to use the refresh functionality of Azure App Configuration in a web application built with the Gin framework. + +## Overview + +This web application: + +1. Loads configuration values from Azure App Configuration +2. Configures the Gin web framework based on those values +3. Automatically refreshes the configuration when changed in Azure App Configuration + +## Running the Example + +### Prerequisites + +You need [an Azure subscription](https://azure.microsoft.com/free/) and the following Azure resources to run the examples: + +- [Azure App Configuration store](https://learn.microsoft.com/en-us/azure/azure-app-configuration/quickstart-azure-app-configuration-create?tabs=azure-portal) + +The examples retrieve credentials to access your App Configuration store from environment variables. + +### Add key-values + +Add the following key-values to the App Configuration store and leave **Label** and **Content Type** with their default values: + +| Key | Value | +|------------------------|--------------------| +| *Config.Message* | *Hello World!* | +| *Config.App.Name* | *Gin Web App* | +| *Config.App.DebugMode* | *true* | + +### Setup + +Set the connection string as an environment variable: + +```bash +# Windows +set AZURE_APPCONFIG_CONNECTION_STRING=your-connection-string + +# Linux/macOS +export AZURE_APPCONFIG_CONNECTION_STRING=your-connection-string +``` + +### Run the Application + +```bash +go run main.go +``` + +Then navigate to `http://localhost:8080` in your web browser. + +### Testing the Refresh Functionality + +1. Start the application +2. While it's running, modify the values in your Azure App Configuration store +3. Within 10 seconds (the configured refresh interval), the application should detect and apply the changes +4. Refresh your browser to see the updated values diff --git a/example/gin-example-refresh/go.mod b/example/gin-example-refresh/go.mod new file mode 100644 index 0000000..54dd10b --- /dev/null +++ b/example/gin-example-refresh/go.mod @@ -0,0 +1,46 @@ +module web-app-refresh + +go 1.23.2 + +require ( + github.com/Azure/AppConfiguration-GoProvider/azureappconfiguration v0.0.0-00010101000000-000000000000 + github.com/gin-gonic/gin v1.10.0 +) + +require ( + github.com/Azure/azure-sdk-for-go/sdk/azcore v1.18.0 // indirect + github.com/Azure/azure-sdk-for-go/sdk/data/azappconfig v1.2.0 // indirect + github.com/Azure/azure-sdk-for-go/sdk/internal v1.11.1 // indirect + github.com/Azure/azure-sdk-for-go/sdk/security/keyvault/azsecrets v1.3.1 // indirect + github.com/Azure/azure-sdk-for-go/sdk/security/keyvault/internal v1.1.1 // indirect + github.com/bytedance/sonic v1.11.6 // indirect + github.com/bytedance/sonic/loader v0.1.1 // indirect + github.com/cloudwego/base64x v0.1.4 // indirect + github.com/cloudwego/iasm v0.2.0 // indirect + github.com/gabriel-vasile/mimetype v1.4.3 // indirect + github.com/gin-contrib/sse v0.1.0 // indirect + github.com/go-playground/locales v0.14.1 // indirect + github.com/go-playground/universal-translator v0.18.1 // indirect + github.com/go-playground/validator/v10 v10.20.0 // indirect + github.com/go-viper/mapstructure/v2 v2.2.1 // indirect + github.com/goccy/go-json v0.10.2 // indirect + github.com/json-iterator/go v1.1.12 // indirect + github.com/klauspost/cpuid/v2 v2.2.7 // indirect + github.com/leodido/go-urn v1.4.0 // indirect + github.com/mattn/go-isatty v0.0.20 // indirect + github.com/modern-go/concurrent v0.0.0-20180306012644-bacd9c7ef1dd // indirect + github.com/modern-go/reflect2 v1.0.2 // indirect + github.com/pelletier/go-toml/v2 v2.2.2 // indirect + github.com/twitchyliquid64/golang-asm v0.15.1 // indirect + github.com/ugorji/go/codec v1.2.12 // indirect + golang.org/x/arch v0.8.0 // indirect + golang.org/x/crypto v0.37.0 // indirect + golang.org/x/net v0.39.0 // indirect + golang.org/x/sync v0.13.0 // indirect + golang.org/x/sys v0.33.0 // indirect + golang.org/x/text v0.24.0 // indirect + google.golang.org/protobuf v1.34.1 // indirect + gopkg.in/yaml.v3 v3.0.1 // indirect +) + +replace github.com/Azure/AppConfiguration-GoProvider/azureappconfiguration => ..\..\azureappconfiguration diff --git a/example/gin-example-refresh/go.sum b/example/gin-example-refresh/go.sum new file mode 100644 index 0000000..101a66b --- /dev/null +++ b/example/gin-example-refresh/go.sum @@ -0,0 +1,124 @@ +github.com/Azure/azure-sdk-for-go/sdk/azcore v1.18.0 h1:Gt0j3wceWMwPmiazCa8MzMA0MfhmPIz0Qp0FJ6qcM0U= +github.com/Azure/azure-sdk-for-go/sdk/azcore v1.18.0/go.mod h1:Ot/6aikWnKWi4l9QB7qVSwa8iMphQNqkWALMoNT3rzM= +github.com/Azure/azure-sdk-for-go/sdk/azidentity v1.9.0 h1:OVoM452qUFBrX+URdH3VpR299ma4kfom0yB0URYky9g= +github.com/Azure/azure-sdk-for-go/sdk/azidentity v1.9.0/go.mod h1:kUjrAo8bgEwLeZ/CmHqNl3Z/kPm7y6FKfxxK0izYUg4= +github.com/Azure/azure-sdk-for-go/sdk/data/azappconfig v1.2.0 h1:uU4FujKFQAz31AbWOO3INV9qfIanHeIUSsGhRlcJJmg= +github.com/Azure/azure-sdk-for-go/sdk/data/azappconfig v1.2.0/go.mod h1:qr3M3Oy6V98VR0c5tCHKUpaeJTRQh6KYzJewRtFWqfc= +github.com/Azure/azure-sdk-for-go/sdk/internal v1.11.1 h1:FPKJS1T+clwv+OLGt13a8UjqeRuh0O4SJ3lUriThc+4= +github.com/Azure/azure-sdk-for-go/sdk/internal v1.11.1/go.mod h1:j2chePtV91HrC22tGoRX3sGY42uF13WzmmV80/OdVAA= +github.com/Azure/azure-sdk-for-go/sdk/security/keyvault/azsecrets v1.3.1 h1:mrkDCdkMsD4l9wjFGhofFHFrV43Y3c53RSLKOCJ5+Ow= +github.com/Azure/azure-sdk-for-go/sdk/security/keyvault/azsecrets v1.3.1/go.mod h1:hPv41DbqMmnxcGralanA/kVlfdH5jv3T4LxGku2E1BY= +github.com/Azure/azure-sdk-for-go/sdk/security/keyvault/internal v1.1.1 h1:bFWuoEKg+gImo7pvkiQEFAc8ocibADgXeiLAxWhWmkI= +github.com/Azure/azure-sdk-for-go/sdk/security/keyvault/internal v1.1.1/go.mod h1:Vih/3yc6yac2JzU4hzpaDupBJP0Flaia9rXXrU8xyww= 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loading the configuration from Azure App Configuration +func loadConfiguration() (*azureappconfiguration.AzureAppConfiguration, error) { + // Get connection string from environment variable + connectionString := os.Getenv("AZURE_APPCONFIG_CONNECTION_STRING") + + // Options setup + options := &azureappconfiguration.Options{ + Selectors: []azureappconfiguration.Selector{ + { + KeyFilter: "Config.*", + }, + }, + // Remove the prefix when mapping to struct fields + TrimKeyPrefixes: []string{"Config."}, + // Enable refresh every 10 seconds + RefreshOptions: azureappconfiguration.KeyValueRefreshOptions{ + Enabled: true, + Interval: 10 * time.Second, + }, + } + + authOptions := azureappconfiguration.AuthenticationOptions{ + ConnectionString: connectionString, + } + + // Create configuration provider with timeout + ctx, cancel := context.WithTimeout(context.Background(), 10*time.Second) + defer cancel() + + return azureappconfiguration.Load(ctx, authOptions, options) +} + +// updateConfig safely updates the global configuration +func updateConfig(newConfig Config) { + configLock.Lock() + defer configLock.Unlock() + config = newConfig +} + +// getConfig safely retrieves the global configuration +func getConfig() Config { + configLock.RLock() + defer configLock.RUnlock() + return config +} + +// configRefreshMiddleware is a Gin middleware that attempts to refresh configuration on incoming requests +func configRefreshMiddleware(appCfgProvider *azureappconfiguration.AzureAppConfiguration) gin.HandlerFunc { + return func(c *gin.Context) { + // Start refresh in a goroutine to avoid blocking the request + go func() { + ctx, cancel := context.WithTimeout(context.Background(), 5*time.Second) + defer cancel() + + if err := appCfgProvider.Refresh(ctx); err != nil { + // Just log the error, don't interrupt request processing + log.Printf("Error refreshing configuration: %s", err) + } + }() + + // Continue processing the request + c.Next() + } +} + +// setupRouter creates and configures the Gin router +func setupRouter(appCfgProvider *azureappconfiguration.AzureAppConfiguration) *gin.Engine { + // Get the current config + currentConfig := getConfig() + + if currentConfig.App.DebugMode { + // Set Gin to debug mode + gin.SetMode(gin.DebugMode) + log.Println("Running in DEBUG mode") + } else { + // Set Gin to release mode for production + gin.SetMode(gin.ReleaseMode) + log.Println("Running in RELEASE mode") + } + + // Initialize Gin router + r := gin.Default() + + // Apply our configuration refresh middleware to all routes + r.Use(configRefreshMiddleware(appCfgProvider)) + + // Load HTML templates + r.LoadHTMLGlob("templates/*") + + // Define a route for the homepage + r.GET("/", func(c *gin.Context) { + // Get the latest config for each request + currentConfig := getConfig() + c.HTML(200, "index.html", gin.H{ + "Title": "Home", + "Message": currentConfig.Message, + "App": currentConfig.App.Name, + }) + }) + + // Define a route for the About page + r.GET("/about", func(c *gin.Context) { + c.HTML(200, "about.html", gin.H{ + "Title": "About", + }) + }) + + return r +} + +func main() { + // Load initial configuration + appCfgProvider, err := loadConfiguration() + if err != nil { + log.Fatalf("Error loading configuration: %s", err) + } + + // Parse configuration into struct and update the global config + var initialConfig Config + err = appCfgProvider.Unmarshal(&initialConfig, nil) + if err != nil { + log.Fatalf("Error unmarshalling configuration: %s", err) + } + updateConfig(initialConfig) + + // Register refresh callback + appCfgProvider.OnRefreshSuccess(func() { + log.Println("Configuration changed! Updating values...") + + // Re-unmarshal the configuration + var updatedConfig Config + err := appCfgProvider.Unmarshal(&updatedConfig, nil) + if err != nil { + log.Printf("Error unmarshalling updated configuration: %s", err) + return + } + + // Update our working config + updateConfig(updatedConfig) + + // Log the changes + log.Printf("Updated configuration: Message=%s, App.Name=%s, App.DebugMode=%v", + updatedConfig.Message, updatedConfig.App.Name, updatedConfig.App.DebugMode) + }) + + // Setup the router with refresh middleware + r := setupRouter(appCfgProvider) + + // Start the server + log.Println("Starting server on :8080") + if err := r.Run(":8080"); err != nil { + log.Fatalf("Error starting server: %s", err) + } +} diff --git a/example/gin-example-refresh/templates/about.html b/example/gin-example-refresh/templates/about.html new file mode 100644 index 0000000..4cac910 --- /dev/null +++ b/example/gin-example-refresh/templates/about.html @@ -0,0 +1,38 @@ + + + + + + {{.Title}} + + + + +
+ Home + About +
+ +
+

About Page

+

This is the about page where you can add information about your website or app.

+
+ + diff --git a/example/gin-example-refresh/templates/index.html b/example/gin-example-refresh/templates/index.html new file mode 100644 index 0000000..99c4332 --- /dev/null +++ b/example/gin-example-refresh/templates/index.html @@ -0,0 +1,38 @@ + + + + + + {{.Title}} + + + + +
+ Home + About +
+ +
+

{{.Message}}

+

{{.App}}

+
+ + diff --git a/example/gin-example/main.go b/example/gin-example/main.go index 4fd49db..845370f 100644 --- a/example/gin-example/main.go +++ b/example/gin-example/main.go @@ -23,7 +23,6 @@ type App struct { // loadConfiguration handles loading the configuration from Azure App Configuration func loadConfiguration() (Config, error) { // Get connection string from environment variable - // This is a security best practice to avoid hardcoding secrets in code connectionString := os.Getenv("AZURE_APPCONFIG_CONNECTION_STRING") // Configuration setup