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helloworld.go
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helloworld.go
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// Copyright 2018-2021 CERN
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
//
// In applying this license, CERN does not waive the privileges and immunities
// granted to it by virtue of its status as an Intergovernmental Organization
// or submit itself to any jurisdiction.
package helloworld
import (
"net/http"
"github.com/cs3org/reva/v2/pkg/appctx"
"github.com/cs3org/reva/v2/pkg/rhttp/global"
"github.com/mitchellh/mapstructure"
"github.com/rs/zerolog"
)
func init() {
global.Register("helloworld", New)
}
// New returns a new helloworld service
func New(m map[string]interface{}, log *zerolog.Logger) (global.Service, error) {
conf := &config{}
if err := mapstructure.Decode(m, conf); err != nil {
return nil, err
}
conf.init()
return &svc{conf: conf}, nil
}
// Close performs cleanup.
func (s *svc) Close() error {
return nil
}
type config struct {
Prefix string `mapstructure:"prefix"`
HelloMessage string `mapstructure:"message"`
}
func (c *config) init() {
if c.HelloMessage == "" {
c.HelloMessage = "Hello World!"
}
if c.Prefix == "" {
c.Prefix = "helloworld"
}
}
type svc struct {
conf *config
}
func (s *svc) Prefix() string {
return s.conf.Prefix
}
func (s *svc) Unprotected() []string {
return []string{"/"}
}
func (s *svc) Handler() http.Handler {
return http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
log := appctx.GetLogger(r.Context())
if _, err := w.Write([]byte(s.conf.HelloMessage)); err != nil {
log.Err(err).Msg("error writing response")
}
})
}