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package api
import "github.com/ethereum/go-ethereum/rpc/shared"
// combines multiple API's
type mergedApi struct {
apis []string
methods map[string]EthereumApi
}
// create new merged api instance
func newMergedApi(apis ...EthereumApi) *mergedApi {
mergedApi := new(mergedApi)
mergedApi.apis = make([]string, len(apis))
mergedApi.methods = make(map[string]EthereumApi)
for i, api := range apis {
mergedApi.apis[i] = api.Name()
for _, method := range api.Methods() {
mergedApi.methods[method] = api
}
}
return mergedApi
}
// Supported RPC methods
func (self *mergedApi) Methods() []string {
all := make([]string, len(self.methods))
for method, _ := range self.methods {
all = append(all, method)
}
return all
}
// Call the correct API's Execute method for the given request
func (self *mergedApi) Execute(req *shared.Request) (interface{}, error) {
if res, _ := self.handle(req); res != nil {
return res, nil
}
if api, found := self.methods[req.Method]; found {
return api.Execute(req)
}
return nil, shared.NewNotImplementedError(req.Method)
}
func (self *mergedApi) Name() string {
return MergedApiName
}
func (self *mergedApi) handle(req *shared.Request) (interface{}, error) {
if req.Method == "support_apis" { // provided API's
return self.apis, nil
}
return nil, nil
}
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