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client.go
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client.go
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package helpers
import (
"bytes"
"context"
"encoding/json"
"fmt"
"io"
"net/http"
"github.com/rotisserie/eris"
)
// HttpClient represents HTTP client.
type HttpClient struct {
client *http.Client
baseURL string
basePath string
}
// NewMlflowApiClient creates new HTTP client for the mlflow api
func NewMlflowApiClient(baseURL string) *HttpClient {
return &HttpClient{
client: &http.Client{},
baseURL: baseURL,
basePath: "/api/2.0/mlflow",
}
}
// NewAimApiClient creates new HTTP client for the aim api
func NewAimApiClient(baseURL string) *HttpClient {
return &HttpClient{
client: &http.Client{},
baseURL: baseURL,
basePath: "/aim/api",
}
}
// DoPostRequest do POST request.
func (c HttpClient) DoPostRequest(uri string, request interface{}, response interface{}) error {
data, err := json.Marshal(request)
if err != nil {
return eris.Wrap(err, "error marshaling request")
}
return c.doRequest(http.MethodPost, uri, response, bytes.NewBuffer(data))
}
// DoPutRequest do PUT request.
func (c HttpClient) DoPutRequest(uri string, request interface{}, response interface{}) error {
data, err := json.Marshal(request)
if err != nil {
return eris.Wrap(err, "error marshaling request")
}
return c.doRequest(http.MethodPut, uri, response, bytes.NewBuffer(data))
}
// DoGetRequest do GET request.
func (c HttpClient) DoGetRequest(uri string, response interface{}) error {
return c.doRequest(http.MethodGet, uri, response, nil)
}
// DoDeleteRequest do DELETE request.
func (c HttpClient) DoDeleteRequest(uri string, response interface{}) error {
return c.doRequest(http.MethodDelete, uri, response, nil)
}
// DoStreamRequest do stream request.
func (c HttpClient) DoStreamRequest(method, uri string, request interface{}) ([]byte, error) {
var requestBody io.Reader
if request != nil {
data, err := json.Marshal(request)
if err != nil {
return nil, eris.Wrap(err, "error marshaling request")
}
requestBody = bytes.NewBuffer(data)
}
// 1. create actual request object.
req, err := http.NewRequestWithContext(
context.Background(),
method,
StrReplace(
fmt.Sprintf(
"%s%s%s",
c.baseURL,
c.basePath,
uri,
),
[]string{},
[]interface{}{},
),
requestBody,
)
if err != nil {
return nil, eris.Wrap(err, "error creating request")
}
req.Header.Set("Content-Type", "application/json")
// 2. send request data.
resp, err := c.client.Do(req)
if err != nil {
return nil, eris.Wrap(err, "error doing request")
}
body, err := io.ReadAll(resp.Body)
defer resp.Body.Close()
if err != nil {
return nil, eris.Wrap(err, "error reading streaming response")
}
return body, nil
}
// doRequest do request of any http method
func (c HttpClient) doRequest(httpMethod string, uri string, response interface{}, requestBody io.Reader) error {
// 1. create actual request object.
req, err := http.NewRequestWithContext(
context.Background(),
httpMethod,
StrReplace(
fmt.Sprintf(
"%s%s%s",
c.baseURL,
c.basePath,
uri,
),
[]string{},
[]interface{}{},
),
requestBody,
)
if err != nil {
return eris.Wrap(err, "error creating request")
}
req.Header.Set("Content-Type", "application/json")
// 3. send request data.
resp, err := c.client.Do(req)
if err != nil {
return eris.Wrap(err, "error doing request")
}
// 4. read and check response data.
body, err := io.ReadAll(resp.Body)
if err != nil {
return eris.Wrap(err, "error reading response data")
}
defer resp.Body.Close()
if err := json.Unmarshal(body, response); err != nil {
return eris.Wrap(err, "error unmarshaling response data")
}
return nil
}