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server_options.go
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server_options.go
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// Copyright (C) MongoDB, Inc. 2017-present.
//
// Licensed under the Apache License, Version 2.0 (the "License"); you may
// not use this file except in compliance with the License. You may obtain
// a copy of the License at http://www.apache.org/licenses/LICENSE-2.0
package topology
import (
"time"
"github.com/Vincent20101/mongo-go-driver/core/connection"
)
type serverConfig struct {
compressionOpts []string
connectionOpts []connection.Option
appname string
heartbeatInterval time.Duration
heartbeatTimeout time.Duration
maxConns uint16
maxIdleConns uint16
}
func newServerConfig(opts ...ServerOption) (*serverConfig, error) {
cfg := &serverConfig{
heartbeatInterval: 10 * time.Second,
heartbeatTimeout: 30 * time.Second,
maxConns: 100,
maxIdleConns: 100,
}
for _, opt := range opts {
err := opt(cfg)
if err != nil {
return nil, err
}
}
return cfg, nil
}
// ServerOption configures a server.
type ServerOption func(*serverConfig) error
// WithConnectionOptions configures the server's connections.
func WithConnectionOptions(fn func(...connection.Option) []connection.Option) ServerOption {
return func(cfg *serverConfig) error {
cfg.connectionOpts = fn(cfg.connectionOpts...)
return nil
}
}
// WithCompressionOptions configures the server's compressors.
func WithCompressionOptions(fn func(...string) []string) ServerOption {
return func(cfg *serverConfig) error {
cfg.compressionOpts = fn(cfg.compressionOpts...)
return nil
}
}
// WithHeartbeatInterval configures a server's heartbeat interval.
func WithHeartbeatInterval(fn func(time.Duration) time.Duration) ServerOption {
return func(cfg *serverConfig) error {
cfg.heartbeatInterval = fn(cfg.heartbeatInterval)
return nil
}
}
// WithHeartbeatTimeout configures how long to wait for a heartbeat socket to
// connection.
func WithHeartbeatTimeout(fn func(time.Duration) time.Duration) ServerOption {
return func(cfg *serverConfig) error {
cfg.heartbeatTimeout = fn(cfg.heartbeatTimeout)
return nil
}
}
// WithMaxConnections configures the maximum number of connections to allow for
// a given server. If max is 0, then there is no upper limit to the number of
// connections.
func WithMaxConnections(fn func(uint16) uint16) ServerOption {
return func(cfg *serverConfig) error {
cfg.maxConns = fn(cfg.maxConns)
return nil
}
}
// WithMaxIdleConnections configures the maximum number of idle connections
// allowed for the server.
func WithMaxIdleConnections(fn func(uint16) uint16) ServerOption {
return func(cfg *serverConfig) error {
cfg.maxIdleConns = fn(cfg.maxIdleConns)
return nil
}
}