forked from go-chassis/go-chassis
/
invoker.go
executable file
·48 lines (40 loc) · 1.13 KB
/
invoker.go
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package core
import (
"github.com/go-chassis/go-chassis/core/common"
"github.com/go-chassis/go-chassis/core/config"
"github.com/go-chassis/go-chassis/core/handler"
"github.com/go-chassis/go-chassis/core/invocation"
"github.com/go-chassis/go-chassis/core/lager"
)
// newOptions is for updating options
func newOptions(options ...Option) Options {
opts := DefaultOptions
for _, o := range options {
o(&opts)
}
if opts.ChainName == "" {
opts.ChainName = common.DefaultChainName
}
return opts
}
// abstract invoker is a common invoker for RPC
type abstractInvoker struct {
opts Options
}
func (ri *abstractInvoker) invoke(i *invocation.Invocation) error {
if len(i.Filters) == 0 {
i.Filters = ri.opts.Filters
}
// add self service name into remote context, this value used in provider rate limiter
i.Ctx = common.WithContext(i.Ctx, common.HeaderSourceName, config.SelfServiceName)
c, err := handler.GetChain(common.Consumer, ri.opts.ChainName)
if err != nil {
lager.Logger.Errorf(err, "Handler chain init err.")
return err
}
c.Next(i, func(ir *invocation.Response) error {
err = ir.Err
return err
})
return err
}