package client import ( "context" "github.com/unistack-org/micro/v3/broker" "github.com/unistack-org/micro/v3/codec" "github.com/unistack-org/micro/v3/errors" "github.com/unistack-org/micro/v3/metadata" ) // DefaultCodecs will be used to encode/decode data var DefaultCodecs = map[string]codec.Codec{ "application/octet-stream": codec.NewCodec(), } type noopClient struct { opts Options } type noopMessage struct { topic string payload interface{} opts MessageOptions } type noopRequest struct { body interface{} codec codec.Codec service string method string endpoint string contentType string stream bool } // NewClient returns new noop client func NewClient(opts ...Option) Client { nc := &noopClient{opts: NewOptions(opts...)} // wrap in reverse c := Client(nc) for i := len(nc.opts.Wrappers); i > 0; i-- { c = nc.opts.Wrappers[i-1](c) } return c } func (n *noopClient) Name() string { return n.opts.Name } func (n *noopRequest) Service() string { return n.service } func (n *noopRequest) Method() string { return n.method } func (n *noopRequest) Endpoint() string { return n.endpoint } func (n *noopRequest) ContentType() string { return n.contentType } func (n *noopRequest) Body() interface{} { return n.body } func (n *noopRequest) Codec() codec.Codec { return n.codec } func (n *noopRequest) Stream() bool { return n.stream } type noopResponse struct { codec codec.Codec header metadata.Metadata } func (n *noopResponse) Codec() codec.Codec { return n.codec } func (n *noopResponse) Header() metadata.Metadata { return n.header } func (n *noopResponse) Read() ([]byte, error) { return nil, nil } type noopStream struct{} func (n *noopStream) Context() context.Context { return context.Background() } func (n *noopStream) Request() Request { return &noopRequest{} } func (n *noopStream) Response() Response { return &noopResponse{} } func (n *noopStream) Send(interface{}) error { return nil } func (n *noopStream) Recv(interface{}) error { return nil } func (n *noopStream) Error() error { return nil } func (n *noopStream) Close() error { return nil } func (n *noopMessage) Topic() string { return n.topic } func (n *noopMessage) Payload() interface{} { return n.payload } func (n *noopMessage) ContentType() string { return n.opts.ContentType } func (n *noopClient) newCodec(contentType string) (codec.Codec, error) { if cf, ok := n.opts.Codecs[contentType]; ok { return cf, nil } if cf, ok := DefaultCodecs[contentType]; ok { return cf, nil } return nil, codec.ErrUnknownContentType } func (n *noopClient) Init(opts ...Option) error { for _, o := range opts { o(&n.opts) } return nil } func (n *noopClient) Options() Options { return n.opts } func (n *noopClient) String() string { return "noop" } func (n *noopClient) Call(ctx context.Context, req Request, rsp interface{}, opts ...CallOption) error { return nil } func (n *noopClient) NewRequest(service, endpoint string, req interface{}, opts ...RequestOption) Request { return &noopRequest{service: service, endpoint: endpoint} } func (n *noopClient) NewMessage(topic string, msg interface{}, opts ...MessageOption) Message { options := NewMessageOptions(opts...) return &noopMessage{topic: topic, payload: msg, opts: options} } func (n *noopClient) Stream(ctx context.Context, req Request, opts ...CallOption) (Stream, error) { return &noopStream{}, nil } func (n *noopClient) Publish(ctx context.Context, p Message, opts ...PublishOption) error { var body []byte options := NewPublishOptions(opts...) md, ok := metadata.FromOutgoingContext(ctx) if !ok { md = metadata.New(0) } md["Content-Type"] = p.ContentType() md["Micro-Topic"] = p.Topic() // passed in raw data if d, ok := p.Payload().(*codec.Frame); ok { body = d.Data } else { // use codec for payload cf, err := n.newCodec(p.ContentType()) if err != nil { return errors.InternalServerError("go.micro.client", err.Error()) } // set the body b, err := cf.Marshal(p.Payload()) if err != nil { return errors.InternalServerError("go.micro.client", err.Error()) } body = b } topic := p.Topic() // get the exchange if len(options.Exchange) > 0 { topic = options.Exchange } return n.opts.Broker.Publish(ctx, topic, &broker.Message{ Header: md, Body: body, }, broker.PublishContext(options.Context), broker.PublishBodyOnly(options.BodyOnly), ) }