package store import ( "context" "crypto/tls" "time" "go.unistack.org/micro/v3/codec" "go.unistack.org/micro/v3/logger" "go.unistack.org/micro/v3/metadata" "go.unistack.org/micro/v3/meter" "go.unistack.org/micro/v3/tracer" ) // Options contains configuration for the Store type Options struct { // Meter used for metrics Meter meter.Meter // Tracer used for tracing Tracer tracer.Tracer // Context holds external options Context context.Context // Codec used to marshal/unmarshal Codec codec.Codec // Logger used for logging Logger logger.Logger // TLSConfig holds tls.TLSConfig options TLSConfig *tls.Config // Name specifies store name Name string // Namespace of the records Namespace string // Addrs contains store address Addrs []string // Wrappers store wrapper that called before actual functions // Wrappers []Wrapper // Timeout specifies timeout duration for all operations Timeout time.Duration } // NewOptions creates options struct func NewOptions(opts ...Option) Options { options := Options{ Logger: logger.DefaultLogger, Context: context.Background(), Codec: codec.DefaultCodec, Tracer: tracer.DefaultTracer, Meter: meter.DefaultMeter, } for _, o := range opts { o(&options) } return options } // Option sets values in Options type Option func(o *Options) // TLSConfig specifies a *tls.Config func TLSConfig(t *tls.Config) Option { return func(o *Options) { o.TLSConfig = t } } // Context pass context to store func Context(ctx context.Context) Option { return func(o *Options) { o.Context = ctx } } // Codec sets the 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 } } // Meter sets the meter func Meter(m meter.Meter) Option { return func(o *Options) { o.Meter = m } } // Name the name of the store func Name(n string) Option { return func(o *Options) { o.Name = n } } // Namespace sets namespace of the store func Namespace(ns string) Option { return func(o *Options) { o.Namespace = ns } } // Tracer sets the tracer func Tracer(t tracer.Tracer) Option { return func(o *Options) { o.Tracer = t } } // Timeout sets the timeout func Timeout(td time.Duration) Option { return func(o *Options) { o.Timeout = td } } // Addrs contains the addresses or other connection information of the backing storage. // For example, an etcd implementation would contain the nodes of the cluster. // A SQL implementation could contain one or more connection strings. func Addrs(addrs ...string) Option { return func(o *Options) { o.Addrs = addrs } } // ReadOptions configures an individual Read operation type ReadOptions struct { // Context holds external options Context context.Context // Namespace holds namespace Namespace string } // NewReadOptions fills ReadOptions struct with opts slice func NewReadOptions(opts ...ReadOption) ReadOptions { options := ReadOptions{} for _, o := range opts { o(&options) } return options } // ReadOption sets values in ReadOptions type ReadOption func(r *ReadOptions) // ReadContext pass context.Context to ReadOptions func ReadContext(ctx context.Context) ReadOption { return func(o *ReadOptions) { o.Context = ctx } } // ReadNamespace pass namespace to ReadOptions func ReadNamespace(ns string) ReadOption { return func(o *ReadOptions) { o.Namespace = ns } } // WriteOptions configures an individual Write operation type WriteOptions struct { // Context holds external options Context context.Context // Metadata contains additional metadata Metadata metadata.Metadata // Namespace holds namespace Namespace string // TTL specifies key TTL TTL time.Duration } // NewWriteOptions fills WriteOptions struct with opts slice func NewWriteOptions(opts ...WriteOption) WriteOptions { options := WriteOptions{} for _, o := range opts { o(&options) } return options } // WriteOption sets values in WriteOptions type WriteOption func(w *WriteOptions) // WriteContext pass context.Context to wirte options func WriteContext(ctx context.Context) WriteOption { return func(o *WriteOptions) { o.Context = ctx } } // WriteMetadata add metadata.Metadata func WriteMetadata(md metadata.Metadata) WriteOption { return func(o *WriteOptions) { o.Metadata = metadata.Copy(md) } } // WriteTTL is the time the record expires func WriteTTL(d time.Duration) WriteOption { return func(o *WriteOptions) { o.TTL = d } } // WriteNamespace pass namespace to write options func WriteNamespace(ns string) WriteOption { return func(o *WriteOptions) { o.Namespace = ns } } // DeleteOptions configures an individual Delete operation type DeleteOptions struct { // Context holds external options Context context.Context // Namespace holds namespace Namespace string } // NewDeleteOptions fills DeleteOptions struct with opts slice func NewDeleteOptions(opts ...DeleteOption) DeleteOptions { options := DeleteOptions{} for _, o := range opts { o(&options) } return options } // DeleteOption sets values in DeleteOptions type DeleteOption func(d *DeleteOptions) // DeleteContext pass context.Context to delete options func DeleteContext(ctx context.Context) DeleteOption { return func(o *DeleteOptions) { o.Context = ctx } } // DeleteNamespace pass namespace to delete options func DeleteNamespace(ns string) DeleteOption { return func(o *DeleteOptions) { o.Namespace = ns } } // ListOptions configures an individual List operation type ListOptions struct { Context context.Context Prefix string Suffix string Namespace string Limit uint Offset uint } // NewListOptions fills ListOptions struct with opts slice func NewListOptions(opts ...ListOption) ListOptions { options := ListOptions{} for _, o := range opts { o(&options) } return options } // ListOption sets values in ListOptions type ListOption func(l *ListOptions) // ListContext pass context.Context to list options func ListContext(ctx context.Context) ListOption { return func(o *ListOptions) { o.Context = ctx } } // ListPrefix returns all keys that are prefixed with key func ListPrefix(s string) ListOption { return func(o *ListOptions) { o.Prefix = s } } // ListSuffix returns all keys that end with key func ListSuffix(s string) ListOption { return func(o *ListOptions) { o.Suffix = s } } // ListLimit limits the number of returned keys func ListLimit(n uint) ListOption { return func(o *ListOptions) { o.Limit = n } } // ListOffset use with Limit for pagination func ListOffset(n uint) ListOption { return func(o *ListOptions) { o.Offset = n } } // ListNamespace pass namespace to list options func ListNamespace(ns string) ListOption { return func(o *ListOptions) { o.Namespace = ns } } // ExistsOptions holds options for Exists method type ExistsOptions struct { // Context holds external options Context context.Context // Namespace contains namespace Namespace string } // ExistsOption specifies Exists call options type ExistsOption func(*ExistsOptions) // NewExistsOptions helper for Exists method func NewExistsOptions(opts ...ExistsOption) ExistsOptions { options := ExistsOptions{ Context: context.Background(), } for _, o := range opts { o(&options) } return options } // ExistsContext pass context.Context to exist options func ExistsContext(ctx context.Context) ExistsOption { return func(o *ExistsOptions) { o.Context = ctx } } // ExistsNamespace pass namespace to exist options func ExistsNamespace(ns string) ExistsOption { return func(o *ExistsOptions) { o.Namespace = ns } } /* // WrapStore adds a store Wrapper to a list of options passed into the store func WrapStore(w Wrapper) Option { return func(o *Options) { o.Wrappers = append(o.Wrappers, w) } } */