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client.go
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client.go
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// Copyright 2021 coord_e
// 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.
package mirakurun
import (
"context"
"encoding/json"
"fmt"
"io"
"net/http"
"net/url"
"path"
"runtime"
"runtime/debug"
"strings"
"github.com/go-kit/log"
"github.com/hashicorp/go-cleanhttp"
)
func version() string {
info, ok := debug.ReadBuildInfo()
if !ok {
return "devel"
}
return strings.Trim(info.Main.Version, "v()")
}
var userAgent = fmt.Sprintf("MirakurunGoClient/%s (%s)", version(), runtime.Version())
type Client struct {
URL *url.URL
HTTPClient *http.Client
DefaultHeader http.Header
Logger log.Logger
}
func NewClient(urlString string) (*Client, error) {
if len(urlString) == 0 {
return nil, fmt.Errorf("missing URL")
}
parsedURL, err := url.Parse(urlString)
if err != nil {
return nil, err
}
client := &Client{
URL: parsedURL,
HTTPClient: cleanhttp.DefaultClient(),
DefaultHeader: make(http.Header),
Logger: log.NewNopLogger(),
}
client.DefaultHeader.Set("User-Agent", userAgent)
client.DefaultHeader.Set("Accept", "application/json")
return client, nil
}
func (c *Client) newRequest(ctx context.Context, method, spath string, body io.Reader) (*http.Request, error) {
u := *c.URL
u.Path = path.Join(c.URL.Path, spath)
req, err := http.NewRequest(method, u.String(), body)
if err != nil {
return nil, err
}
req = req.WithContext(ctx)
for k, v := range c.DefaultHeader {
req.Header[k] = v
}
return req, nil
}
func decodeBody(resp *http.Response, out interface{}) error {
defer resp.Body.Close()
decoder := json.NewDecoder(resp.Body)
return decoder.Decode(out)
}