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builder.go
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builder.go
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// Copyright (c) 2020 SAP SE or an SAP affiliate company. All rights reserved. This file is licensed under the Apache Software License, v. 2 except as noted otherwise in the LICENSE file
//
// 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
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
package server
import (
"net/http"
"sync"
)
// Builder is a new builder for Servers.
type Builder struct {
bindAddress string
port int
tlsCertPath *string
tlsKeyPath *string
handlers map[string]http.Handler
handlerFuncs map[string]http.HandlerFunc
lock sync.Mutex
}
// NewBuilder creates a new builder object for servers.
func NewBuilder() *Builder {
return &Builder{
bindAddress: "0.0.0.0",
port: 8080,
handlers: make(map[string]http.Handler),
handlerFuncs: make(map[string]http.HandlerFunc),
}
}
// WithBindAddress sets the bind address.
func (b *Builder) WithBindAddress(bindAddress string) *Builder {
b.bindAddress = bindAddress
return b
}
// WithPort sets the port.
func (b *Builder) WithPort(port int) *Builder {
b.port = port
return b
}
// WithTLS sets the paths for the TLS certificate and key. If they are set then a HTTPS server will be built.
func (b *Builder) WithTLS(certPath, keyPath string) *Builder {
b.tlsCertPath = &certPath
b.tlsKeyPath = &keyPath
return b
}
// WithHandlers sets the handlers list.
func (b *Builder) WithHandlers(handlers map[string]http.Handler) *Builder {
b.handlers = handlers
return b
}
// WithHandler adds a specific handler.
func (b *Builder) WithHandler(pattern string, handler http.Handler) *Builder {
b.lock.Lock()
defer b.lock.Unlock()
b.handlers[pattern] = handler
return b
}
// WithHandlerFuncs sets the handlerFuncs list.
func (b *Builder) WithHandlerFuncs(handlerFuncs map[string]http.HandlerFunc) *Builder {
b.handlerFuncs = handlerFuncs
return b
}
// WithHandlerFunc adds a specific handlerFunc.
func (b *Builder) WithHandlerFunc(pattern string, handlerFunc http.HandlerFunc) *Builder {
b.lock.Lock()
defer b.lock.Unlock()
b.handlerFuncs[pattern] = handlerFunc
return b
}
// Build builds a Server object.
func (b *Builder) Build() *Server {
return &Server{
bindAddress: b.bindAddress,
port: b.port,
tlsCertPath: b.tlsCertPath,
tlsKeyPath: b.tlsKeyPath,
handlers: b.handlers,
handlerFuncs: b.handlerFuncs,
}
}