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http_client.go
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http_client.go
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// Copyright (c) 2018 Ashley Jeffs
//
// Permission is hereby granted, free of charge, to any person obtaining a copy
// of this software and associated documentation files (the "Software"), to deal
// in the Software without restriction, including without limitation the rights
// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
// copies of the Software, and to permit persons to whom the Software is
// furnished to do so, subject to the following conditions:
//
// The above copyright notice and this permission notice shall be included in
// all copies or substantial portions of the Software.
//
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
// THE SOFTWARE.
package writer
import (
"time"
"github.com/Jeffail/benthos/lib/log"
"github.com/Jeffail/benthos/lib/metrics"
"github.com/Jeffail/benthos/lib/types"
"github.com/Jeffail/benthos/lib/util/http/client"
)
//------------------------------------------------------------------------------
// HTTPClientConfig contains configuration fields for the HTTPClient output
// type.
type HTTPClientConfig struct {
client.Config `json:",inline" yaml:",inline"`
}
// NewHTTPClientConfig creates a new HTTPClientConfig with default values.
func NewHTTPClientConfig() HTTPClientConfig {
return HTTPClientConfig{
Config: client.NewConfig(),
}
}
//------------------------------------------------------------------------------
// HTTPClient is an output type that sends messages as HTTP requests to a target
// server endpoint.
type HTTPClient struct {
client *client.Type
stats metrics.Type
log log.Modular
conf HTTPClientConfig
closeChan chan struct{}
}
// NewHTTPClient creates a new HTTPClient writer type.
func NewHTTPClient(conf HTTPClientConfig, log log.Modular, stats metrics.Type) (*HTTPClient, error) {
h := HTTPClient{
stats: stats,
log: log.NewModule(".output.http_client"),
conf: conf,
closeChan: make(chan struct{}),
}
var err error
if h.client, err = client.New(
conf.Config,
client.OptSetCloseChan(h.closeChan),
client.OptSetLogger(h.log),
client.OptSetStats(metrics.Namespaced(h.stats, "output.http_client")),
); err != nil {
return nil, err
}
return &h, nil
}
//------------------------------------------------------------------------------
// Connect does nothing.
func (h *HTTPClient) Connect() error {
h.log.Infof("Sending messages via HTTP requests to: %s\n", h.conf.URL)
return nil
}
// Write attempts to send a message to an HTTP server, this attempt may include
// retries, and if all retries fail an error is returned.
func (h *HTTPClient) Write(msg types.Message) error {
_, err := h.client.Send(msg)
return err
}
// CloseAsync shuts down the HTTPClient output and stops processing messages.
func (h *HTTPClient) CloseAsync() {
close(h.closeChan)
}
// WaitForClose blocks until the HTTPClient output has closed down.
func (h *HTTPClient) WaitForClose(timeout time.Duration) error {
return nil
}
//------------------------------------------------------------------------------