opensaps/slack/slackapiserver.go

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// OpenSAPS - Open Slack API server for everyone.
//
// Copyright (c) 2017, Stanislav N. aka pztrn.
// All rights reserved.
//
// This program is free software: you can redistribute it and/or modify
// it under the terms of the GNU General Public License as published by
// the Free Software Foundation, either version 3 of the License, or
// (at your option) any later version.
//
// This program is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
// GNU General Public License for more details.
//
// You should have received a copy of the GNU General Public License
// along with this program. If not, see <http://www.gnu.org/licenses/>.
package slack
// This is a handler for Slack Webhooks API requests.
// Slack Webhooks API generates next URL:
// https://hooks.slack.com/services/TRANDOM1/BRANDOM2/randomlongstring
//
// Where:
// * RANDOM1 and RANDOM2 - random 8-char thing.
// * randomlongstring - random 24-char thing.
//
// These strings should be defined in configuration, so we can create proper
// handler for it.
import (
"context"
"net/http"
"time"
)
type APIServer struct{}
func (sh APIServer) Initialize() {
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ctx.Log.Info().Msg("Initializing Slack API handler...")
// Start HTTP server.
// As OpenSAPS designed to be behind some proxy (nginx, Caddy, etc.)
// we will listen only to plain HTTP.
// Note to those who wants HTTPS - proxify with nginx, Caddy, etc!
// Don't send pull requests, patches, don't create issues! :)
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cfg := ctx.Config.GetConfig()
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// nolint:exhaustruct,gomnd
httpsrv = &http.Server{
Addr: cfg.SlackHandler.Listener.Address,
// This handler will figure out from where request has come and will
// send it to appropriate pusher. Pusher should also determine to which
// connection data should be sent.
Handler: Handler{},
ReadTimeout: 10 * time.Second,
WriteTimeout: 10 * time.Second,
MaxHeaderBytes: 1 << 20,
}
go func() {
_ = httpsrv.ListenAndServe()
}()
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ctx.Log.Info().Str("address", cfg.SlackHandler.Listener.Address).Msg("Starting Slack Webhooks API server")
}
func (sh APIServer) Shutdown() {
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ctx.Log.Info().Msg("Shutting down Slack API handler...")
_ = httpsrv.Shutdown(context.TODO())
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ctx.Log.Info().Msg("Slack API HTTP server shutted down")
}