92 lines
2.4 KiB
Go
92 lines
2.4 KiB
Go
/*
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Package web implements common functionality for web APIs using Gin and Gorm.
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Modules
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Modules provide functionality for a web server. A module is a function executed
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before starting a server, accessing the Service and the Gin Engine. Each Service
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maintains a list of modules. When it runs, it executes all of its modules.
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*/
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package web
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import (
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"net/http"
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"github.com/gin-gonic/gin"
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"go.uber.org/zap"
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// acme
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"github.com/gin-gonic/autotls"
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"golang.org/x/crypto/acme/autocert"
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// internal
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"dev.sum7.eu/genofire/golang-lib/mailer"
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"gorm.io/gorm"
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)
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// A Service stores configuration of a server.
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type Service struct {
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// config
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Listen string `config:"listen" toml:"listen"`
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AccessLog bool `config:"access_log" toml:"access_log"`
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WebrootIndexDisable bool `config:"webroot_index_disable" toml:"webroot_index_disable"`
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Webroot string `config:"webroot" toml:"webroot"`
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WebrootFS http.FileSystem `config:"-" toml:"-"`
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ACME struct {
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Enable bool `config:"enable" toml:"enable"`
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Domains []string `config:"domains" toml:"domains"`
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Cache string `config: "cache" toml:"cache"`
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} `config:"acme" toml:"acme"`
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Session struct {
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Name string `config:"name" toml:"name"`
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Secret string `config: "secret" toml:"secret"`
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} `config:"session" toml:"session"`
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// internal
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DB *gorm.DB `config:"-" toml:"-"`
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Mailer *mailer.Service `config:"-" toml:"-"`
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log *zap.Logger
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modules []ModuleRegisterFunc
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}
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// SetLog - set new logger
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func (s *Service) SetLog(l *zap.Logger) {
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s.log = l
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}
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// Log - get current logger
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func (s *Service) Log() *zap.Logger {
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return s.log
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}
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// Run creates, configures, and runs a new gin.Engine using its registered
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// modules.
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func (s *Service) Run(log *zap.Logger) error {
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s.log = log
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gin.EnableJsonDecoderDisallowUnknownFields()
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gin.SetMode(gin.ReleaseMode)
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r := gin.New()
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// catch crashed
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r.Use(gin.Recovery())
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if s.AccessLog {
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r.Use(gin.Logger())
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s.log.Debug("request logging enabled")
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}
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s.LoadSession(r)
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s.Bind(r)
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if s.ACME.Enable {
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if s.Listen != "" {
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s.log.Panic("For ACME / Let's Encrypt it is not possible to set `listen`")
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}
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m := autocert.Manager{
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Prompt: autocert.AcceptTOS,
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HostPolicy: autocert.HostWhitelist(s.ACME.Domains...),
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Cache: autocert.DirCache(s.ACME.Cache),
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}
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return autotls.RunWithManager(r, &m)
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}
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return r.Run(s.Listen)
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}
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