ipfs-cluster/api/rest/client/request.go
Wyatt Daviau 1704295331 Refactor add & general cleanup
addFile function is now a Cluster method accessed by RPC
residue from attempting to stream responses removed
ipfs-cluster-ctl ls bug fixed
problem with importer/add not printing resolved
new test now checks for this

License: MIT
Signed-off-by: Wyatt Daviau <wdaviau@cs.stanford.edu>
2018-08-07 20:11:23 +02:00

114 lines
2.8 KiB
Go

package client
import (
"encoding/json"
"io"
"io/ioutil"
"net/http"
"strings"
"github.com/ipfs/ipfs-cluster/api"
)
func (c *Client) do(method, path string, body io.Reader, obj interface{}) error {
resp, err := c.doRequest(method, path, body)
if err != nil {
return &api.Error{Code: 0, Message: err.Error()}
}
return c.handleResponse(resp, obj)
}
func (c *Client) doRequest(method, path string, body io.Reader) (*http.Response, error) {
urlpath := c.net + "://" + c.hostname + "/" + strings.TrimPrefix(path, "/")
logger.Debugf("%s: %s", method, urlpath)
r, err := http.NewRequest(method, urlpath, body)
if err != nil {
return nil, err
}
if c.config.DisableKeepAlives {
r.Close = true
}
if c.config.Username != "" {
r.SetBasicAuth(c.config.Username, c.config.Password)
}
return c.client.Do(r)
}
// eventually we may want to trigger streaming with a boolean flag in
// a single doRequest function to prevent code duplication (same for do)
func (c *Client) doStreamRequest(method, path string, body io.Reader, headers map[string]string) (*http.Response, error) {
urlpath := c.urlPrefix + "/" + strings.TrimPrefix(path, "/")
logger.Debugf("%s: %s", method, urlpath)
r, err := http.NewRequest(method, urlpath, body)
if err != nil {
return nil, err
}
if c.config.DisableKeepAlives {
r.Close = true
}
if c.config.Username != "" {
r.SetBasicAuth(c.config.Username, c.config.Password)
}
for k, v := range headers {
r.Header.Set(k, v)
}
// Here are the streaming specific modifications
// Using HTTP 2.0 to enable parallel reading req and writing resp
r.ProtoMajor = 2
r.ProtoMinor = 0
r.ContentLength = -1
return c.client.Do(r)
}
func (c *Client) doStream(method, path string, body io.Reader, headers map[string]string, obj interface{}) (error) {
resp, err := c.doStreamRequest(method, path, body, headers)
if err != nil {
return &api.Error{Code: 0, Message: err.Error()}
}
return c.handleResponse(resp, obj)
}
func (c *Client) handleResponse(resp *http.Response, obj interface{}) error {
body, err := ioutil.ReadAll(resp.Body)
resp.Body.Close()
if err != nil {
return &api.Error{Code: resp.StatusCode, Message: err.Error()}
}
logger.Debugf("Response body: %s", body)
switch {
case resp.StatusCode == http.StatusAccepted:
logger.Debug("Request accepted")
case resp.StatusCode == http.StatusNoContent:
logger.Debug("Request suceeded. Response has no content")
default:
if resp.StatusCode > 399 {
var apiErr api.Error
err = json.Unmarshal(body, &apiErr)
if err != nil {
return &api.Error{
Code: resp.StatusCode,
Message: err.Error(),
}
}
return &apiErr
}
err = json.Unmarshal(body, obj)
if err != nil {
return &api.Error{
Code: resp.StatusCode,
Message: err.Error(),
}
}
}
return nil
}