package config import ( "context" "time" "github.com/unistack-org/micro/v3/codec" "github.com/unistack-org/micro/v3/logger" "github.com/unistack-org/micro/v3/meter" "github.com/unistack-org/micro/v3/tracer" ) // Options hold the config options type Options struct { // Struct holds the destination config struct Struct interface{} // Codec that used for load/save Codec codec.Codec // Tracer that will be used Tracer tracer.Tracer // Meter that will be used Meter meter.Meter // Logger that will be used Logger logger.Logger // Context used for external options Context context.Context // Name of the config Name string // StructTag name StructTag string // BeforeSave contains slice of funcs that runs before save BeforeSave []func(context.Context, Config) error // AfterLoad contains slice of funcs that runs after load AfterLoad []func(context.Context, Config) error // BeforeLoad contains slice of funcs that runs before load BeforeLoad []func(context.Context, Config) error // AfterSave contains slice of funcs that runs after save AfterSave []func(context.Context, Config) error // AllowFail flag to allow fail in config source AllowFail bool } // Option function signature type Option func(o *Options) // NewOptions new options struct with filed values func NewOptions(opts ...Option) Options { options := Options{ Logger: logger.DefaultLogger, Meter: meter.DefaultMeter, Tracer: tracer.DefaultTracer, Context: context.Background(), } for _, o := range opts { o(&options) } return options } // LoadOption function signature type LoadOption func(o *LoadOptions) // LoadOptions struct type LoadOptions struct { Struct interface{} Override bool Append bool } func NewLoadOptions(opts ...LoadOption) LoadOptions { options := LoadOptions{} for _, o := range opts { o(&options) } return options } // LoadOverride override values when load func LoadOverride(b bool) LoadOption { return func(o *LoadOptions) { o.Override = b } } // LoadAppend override values when load func LoadAppend(b bool) LoadOption { return func(o *LoadOptions) { o.Append = b } } // LoadStruct override struct for loading func LoadStruct(src interface{}) LoadOption { return func(o *LoadOptions) { o.Struct = src } } // SaveOption function signature type SaveOption func(o *SaveOptions) // SaveOptions struct type SaveOptions struct { Struct interface{} } // SaveStruct override struct for save to config func SaveStruct(src interface{}) SaveOption { return func(o *SaveOptions) { o.Struct = src } } // NewSaveOptions fill SaveOptions struct func NewSaveOptions(opts ...SaveOption) SaveOptions { options := SaveOptions{} for _, o := range opts { o(&options) } return options } // AllowFail allows config source to fail func AllowFail(b bool) Option { return func(o *Options) { o.AllowFail = b } } // BeforeLoad run funcs before config load func BeforeLoad(fn ...func(context.Context, Config) error) Option { return func(o *Options) { o.BeforeLoad = fn } } // AfterLoad run funcs after config load func AfterLoad(fn ...func(context.Context, Config) error) Option { return func(o *Options) { o.AfterLoad = fn } } // BeforeSave run funcs before save func BeforeSave(fn ...func(context.Context, Config) error) Option { return func(o *Options) { o.BeforeSave = fn } } // AfterSave run fncs after save func AfterSave(fn ...func(context.Context, Config) error) Option { return func(o *Options) { o.AfterSave = fn } } // Context pass context func Context(ctx context.Context) Option { return func(o *Options) { o.Context = ctx } } // Codec sets the source codec func Codec(c codec.Codec) Option { return func(o *Options) { o.Codec = c } } // Logger sets the logger func Logger(l logger.Logger) Option { return func(o *Options) { o.Logger = l } } // Tracer to be used for tracing func Tracer(t tracer.Tracer) Option { return func(o *Options) { o.Tracer = t } } // Struct used as config func Struct(v interface{}) Option { return func(o *Options) { o.Struct = v } } // StructTag sets the struct tag that used for filling func StructTag(name string) Option { return func(o *Options) { o.StructTag = name } } // Name sets the name func Name(n string) Option { return func(o *Options) { o.Name = n } } // WatchOptions struuct type WatchOptions struct { // Context used by non default options Context context.Context // Struct for filling Struct interface{} // MinInterval specifies the min time.Duration interval for poll changes MinInterval time.Duration // MaxInterval specifies the max time.Duration interval for poll changes MaxInterval time.Duration // Coalesce multiple events to one Coalesce bool } type WatchOption func(*WatchOptions) func NewWatchOptions(opts ...WatchOption) WatchOptions { options := WatchOptions{ Context: context.Background(), MinInterval: DefaultWatcherMinInterval, MaxInterval: DefaultWatcherMaxInterval, } for _, o := range opts { o(&options) } return options } // WatchContext pass context func WatchContext(ctx context.Context) WatchOption { return func(o *WatchOptions) { o.Context = ctx } } // WatchCoalesce controls watch event combining func WatchCoalesce(b bool) WatchOption { return func(o *WatchOptions) { o.Coalesce = b } } // WatchInterval specifies min and max time.Duration for pulling changes func WatchInterval(min, max time.Duration) WatchOption { return func(o *WatchOptions) { o.MinInterval = min o.MaxInterval = max } } // WatchStruct overrides struct for fill func WatchStruct(src interface{}) WatchOption { return func(o *WatchOptions) { o.Struct = src } }