mirror of https://github.com/ergochat/ergo.git
79 lines
2.0 KiB
Go
79 lines
2.0 KiB
Go
// Copyright (c) 2017 Daniel Oaks <daniel@danieloaks.net>
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// released under the MIT license
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package irc
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import (
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"strconv"
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"time"
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"github.com/goshuirc/irc-go/ircmsg"
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"github.com/oragono/oragono/irc/caps"
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)
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const (
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// maxBatchID is the maximum ID the batch counter can get to before it rotates.
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//
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// Batch IDs are made up of the current unix timestamp plus a rolling int ID that's
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// incremented for every new batch. It's an alright solution and will work unless we get
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// more than maxId batches per nanosecond. Later on when we have S2S linking, the batch
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// ID will also contain the server ID to ensure they stay unique.
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maxBatchID uint64 = 60000
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)
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// BatchManager helps generate new batches and new batch IDs.
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type BatchManager struct {
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idCounter uint64
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}
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// NewBatchManager returns a new Manager.
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func NewBatchManager() *BatchManager {
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return &BatchManager{}
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}
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// NewID returns a new batch ID that should be unique.
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func (bm *BatchManager) NewID() string {
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bm.idCounter++
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if maxBatchID < bm.idCounter {
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bm.idCounter = 0
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}
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return strconv.FormatInt(time.Now().UnixNano(), 10) + strconv.FormatUint(bm.idCounter, 10)
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}
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// Batch represents an IRCv3 batch.
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type Batch struct {
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ID string
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Type string
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Params []string
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}
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// New returns a new batch.
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func (bm *BatchManager) New(batchType string, params ...string) *Batch {
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newBatch := Batch{
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ID: bm.NewID(),
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Type: batchType,
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Params: params,
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}
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return &newBatch
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}
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// Start sends the batch start message to this client
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func (b *Batch) Start(client *Client, tags *map[string]ircmsg.TagValue) {
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if client.capabilities.Has(caps.Batch) {
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params := []string{"+" + b.ID, b.Type}
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for _, param := range b.Params {
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params = append(params, param)
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}
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client.Send(tags, client.server.name, "BATCH", params...)
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}
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}
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// End sends the batch end message to this client
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func (b *Batch) End(client *Client) {
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if client.capabilities.Has(caps.Batch) {
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client.Send(nil, client.server.name, "BATCH", "-"+b.ID)
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}
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}
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