github.com/m3db/m3@v1.5.0/src/query/test/compatibility/m3query_client.go (about)

     1  // Copyright (c) 2020 Uber Technologies, Inc.
     2  //
     3  // Permission is hereby granted, free of charge, to any person obtaining a copy
     4  // of this software and associated documentation files (the "Software"), to deal
     5  // in the Software without restriction, including without limitation the rights
     6  // to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
     7  // copies of the Software, and to permit persons to whom the Software is
     8  // furnished to do so, subject to the following conditions:
     9  //
    10  // The above copyright notice and this permission notice shall be included in
    11  // all copies or substantial portions of the Software.
    12  //
    13  // THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
    14  // IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
    15  // FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
    16  // AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
    17  // LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
    18  // OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
    19  // THE SOFTWARE.
    20  
    21  package compatibility
    22  
    23  import (
    24  	"fmt"
    25  	"io/ioutil"
    26  	"net/http"
    27  	"time"
    28  
    29  	"github.com/pkg/errors"
    30  )
    31  
    32  type m3queryClient struct {
    33  	host string
    34  	port int
    35  }
    36  
    37  func newM3QueryClient(host string, port int) *m3queryClient {
    38  	return &m3queryClient{
    39  		host: host,
    40  		port: port,
    41  	}
    42  }
    43  
    44  func (c *m3queryClient) query(expr string, t time.Time) ([]byte, error) {
    45  	url := fmt.Sprintf("http://%s:%d/m3query/api/v1/query", c.host, c.port)
    46  	req, err := http.NewRequest("GET", url, nil)
    47  	if err != nil {
    48  		return nil, err
    49  	}
    50  
    51  	q := req.URL.Query()
    52  	q.Add("query", expr)
    53  	q.Add("time", fmt.Sprint(t.Unix()))
    54  	req.URL.RawQuery = q.Encode()
    55  	resp, err := http.DefaultClient.Do(req)
    56  
    57  	if err != nil {
    58  		return nil, errors.Wrapf(err, "error evaluating query %s", expr)
    59  	}
    60  
    61  	defer resp.Body.Close()
    62  	if resp.StatusCode/200 != 1 {
    63  		return nil, fmt.Errorf("invalid status %+v received sending query: %+v", resp.StatusCode, req)
    64  	}
    65  
    66  	return ioutil.ReadAll(resp.Body)
    67  }