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go-micro/config/source/mucp/mucp.go

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package mucp
import (
"context"
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"github.com/micro/go-micro/client"
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"github.com/micro/go-micro/config/source"
proto "github.com/micro/go-micro/config/source/mucp/proto"
"github.com/micro/go-micro/util/log"
)
var (
DefaultServiceName = "go.micro.config"
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DefaultClient = client.DefaultClient
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)
type mucpSource struct {
serviceName string
key string
opts source.Options
client proto.SourceService
}
func (m *mucpSource) Read() (set *source.ChangeSet, err error) {
req, err := m.client.Read(context.Background(), &proto.ReadRequest{Path: m.key})
if err != nil {
return nil, err
}
return toChangeSet(req.Change.ChangeSet), nil
}
func (m *mucpSource) Watch() (w source.Watcher, err error) {
stream, err := m.client.Watch(context.Background(), &proto.WatchRequest{Key: m.key})
if err != nil {
log.Error("watch err: ", err)
return
}
return newWatcher(stream)
}
// Write is unsupported
func (m *mucpSource) Write(cs *source.ChangeSet) error {
return nil
}
func (m *mucpSource) String() string {
return "mucp"
}
func NewSource(opts ...source.Option) source.Source {
var options source.Options
for _, o := range opts {
o(&options)
}
addr := DefaultServiceName
if options.Context != nil {
a, ok := options.Context.Value(serviceNameKey{}).(string)
if ok {
addr = a
}
}
s := &mucpSource{
serviceName: addr,
opts: options,
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client: proto.NewSourceService(addr, DefaultClient),
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}
return s
}