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package client
import (
"context"
"time"
"gitee.com/sasukebo/go-micro/v4/broker"
"gitee.com/sasukebo/go-micro/v4/codec"
"gitee.com/sasukebo/go-micro/v4/registry"
"gitee.com/sasukebo/go-micro/v4/selector"
"gitee.com/sasukebo/go-micro/v4/transport"
)
type Options struct {
// Used to select codec
ContentType string
// Plugged interfaces
Broker broker.Broker
Codecs map[string]codec.NewCodec
Registry registry.Registry
Selector selector.Selector
Transport transport.Transport
// Router sets the router
Router Router
// Connection Pool
PoolSize int
PoolTTL time.Duration
// Response cache
Cache *Cache
// Middleware for client
Wrappers []Wrapper
// Default Call Options
CallOptions CallOptions
// Other options for implementations of the interface
// can be stored in a context
Context context.Context
}
type CallOptions struct {
SelectOptions []selector.SelectOption
// Address of remote hosts
Address []string
// Backoff func
Backoff BackoffFunc
// Check if retriable func
Retry RetryFunc
// Transport Dial Timeout
DialTimeout time.Duration
// Number of Call attempts
Retries int
// Request/Response timeout
RequestTimeout time.Duration
// Stream timeout for the stream
StreamTimeout time.Duration
// Use the services own auth token
ServiceToken bool
// Duration to cache the response for
CacheExpiry time.Duration
// Middleware for low level call func
CallWrappers []CallWrapper
// Other options for implementations of the interface
// can be stored in a context
Context context.Context
}
type PublishOptions struct {
// Exchange is the routing exchange for the message
Exchange string
// Other options for implementations of the interface
// can be stored in a context
Context context.Context
}
type MessageOptions struct {
ContentType string
}
type RequestOptions struct {
ContentType string
Stream bool
// Other options for implementations of the interface
// can be stored in a context
Context context.Context
}
func NewOptions(options ...Option) Options {
opts := Options{
Cache: NewCache(),
Context: context.Background(),
ContentType: DefaultContentType,
Codecs: make(map[string]codec.NewCodec),
CallOptions: CallOptions{
Backoff: DefaultBackoff,
Retry: DefaultRetry,
Retries: DefaultRetries,
RequestTimeout: DefaultRequestTimeout,
DialTimeout: transport.DefaultDialTimeout,
},
PoolSize: DefaultPoolSize,
PoolTTL: DefaultPoolTTL,
Broker: broker.DefaultBroker,
Selector: selector.DefaultSelector,
Registry: registry.DefaultRegistry,
Transport: transport.DefaultTransport,
}
for _, o := range options {
o(&opts)
}
return opts
}
// Broker to be used for pub/sub
func Broker(b broker.Broker) Option {
return func(o *Options) {
o.Broker = b
}
}
// Codec to be used to encode/decode requests for a given content type
func Codec(contentType string, c codec.NewCodec) Option {
return func(o *Options) {
o.Codecs[contentType] = c
}
}
// Default content type of the client
func ContentType(ct string) Option {
return func(o *Options) {
o.ContentType = ct
}
}
// PoolSize sets the connection pool size
func PoolSize(d int) Option {
return func(o *Options) {
o.PoolSize = d
}
}
// PoolTTL sets the connection pool ttl
func PoolTTL(d time.Duration) Option {
return func(o *Options) {
o.PoolTTL = d
}
}
// Registry to find nodes for a given service
func Registry(r registry.Registry) Option {
return func(o *Options) {
o.Registry = r
// set in the selector
o.Selector.Init(selector.Registry(r))
}
}
// Transport to use for communication e.g http, rabbitmq, etc
func Transport(t transport.Transport) Option {
return func(o *Options) {
o.Transport = t
}
}
// Select is used to select a node to route a request to
func Selector(s selector.Selector) Option {
return func(o *Options) {
o.Selector = s
}
}
// Adds a Wrapper to a list of options passed into the client
func Wrap(w Wrapper) Option {
return func(o *Options) {
o.Wrappers = append(o.Wrappers, w)
}
}
// Adds a Wrapper to the list of CallFunc wrappers
func WrapCall(cw ...CallWrapper) Option {
return func(o *Options) {
o.CallOptions.CallWrappers = append(o.CallOptions.CallWrappers, cw...)
}
}
// Backoff is used to set the backoff function used
// when retrying Calls
func Backoff(fn BackoffFunc) Option {
return func(o *Options) {
o.CallOptions.Backoff = fn
}
}
// Number of retries when making the request.
// Should this be a Call Option?
func Retries(i int) Option {
return func(o *Options) {
o.CallOptions.Retries = i
}
}
// Retry sets the retry function to be used when re-trying.
func Retry(fn RetryFunc) Option {
return func(o *Options) {
o.CallOptions.Retry = fn
}
}
// The request timeout.
// Should this be a Call Option?
func RequestTimeout(d time.Duration) Option {
return func(o *Options) {
o.CallOptions.RequestTimeout = d
}
}
// StreamTimeout sets the stream timeout
func StreamTimeout(d time.Duration) Option {
return func(o *Options) {
o.CallOptions.StreamTimeout = d
}
}
// Transport dial timeout
func DialTimeout(d time.Duration) Option {
return func(o *Options) {
o.CallOptions.DialTimeout = d
}
}
// Call Options
// WithExchange sets the exchange to route a message through
func WithExchange(e string) PublishOption {
return func(o *PublishOptions) {
o.Exchange = e
}
}
// PublishContext sets the context in publish options
func PublishContext(ctx context.Context) PublishOption {
return func(o *PublishOptions) {
o.Context = ctx
}
}
// WithAddress sets the remote addresses to use rather than using service discovery
func WithAddress(a ...string) CallOption {
return func(o *CallOptions) {
o.Address = a
}
}
func WithSelectOption(so ...selector.SelectOption) CallOption {
return func(o *CallOptions) {
o.SelectOptions = append(o.SelectOptions, so...)
}
}
// WithCallWrapper is a CallOption which adds to the existing CallFunc wrappers
func WithCallWrapper(cw ...CallWrapper) CallOption {
return func(o *CallOptions) {
o.CallWrappers = append(o.CallWrappers, cw...)
}
}
// WithBackoff is a CallOption which overrides that which
// set in Options.CallOptions
func WithBackoff(fn BackoffFunc) CallOption {
return func(o *CallOptions) {
o.Backoff = fn
}
}
// WithRetry is a CallOption which overrides that which
// set in Options.CallOptions
func WithRetry(fn RetryFunc) CallOption {
return func(o *CallOptions) {
o.Retry = fn
}
}
// WithRetries is a CallOption which overrides that which
// set in Options.CallOptions
func WithRetries(i int) CallOption {
return func(o *CallOptions) {
o.Retries = i
}
}
// WithRequestTimeout is a CallOption which overrides that which
// set in Options.CallOptions
func WithRequestTimeout(d time.Duration) CallOption {
return func(o *CallOptions) {
o.RequestTimeout = d
}
}
// WithStreamTimeout sets the stream timeout
func WithStreamTimeout(d time.Duration) CallOption {
return func(o *CallOptions) {
o.StreamTimeout = d
}
}
// WithDialTimeout is a CallOption which overrides that which
// set in Options.CallOptions
func WithDialTimeout(d time.Duration) CallOption {
return func(o *CallOptions) {
o.DialTimeout = d
}
}
// WithServiceToken is a CallOption which overrides the
// authorization header with the services own auth token
func WithServiceToken() CallOption {
return func(o *CallOptions) {
o.ServiceToken = true
}
}
// WithCache is a CallOption which sets the duration the response
// shoull be cached for
func WithCache(c time.Duration) CallOption {
return func(o *CallOptions) {
o.CacheExpiry = c
}
}
func WithMessageContentType(ct string) MessageOption {
return func(o *MessageOptions) {
o.ContentType = ct
}
}
// Request Options
func WithContentType(ct string) RequestOption {
return func(o *RequestOptions) {
o.ContentType = ct
}
}
func StreamingRequest() RequestOption {
return func(o *RequestOptions) {
o.Stream = true
}
}
// WithRouter sets the client router
func WithRouter(r Router) Option {
return func(o *Options) {
o.Router = r
}
}
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