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							101 lines
						
					
					
						
							2.5 KiB
						
					
					
				| // Copyright 2015 Matthew Holt and The Caddy Authors | |
| // | |
| // 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 logging | |
| 
 | |
| import ( | |
| 	"fmt" | |
| 	"io" | |
| 	"net" | |
| 
 | |
| 	"github.com/caddyserver/caddy/v2" | |
| 	"github.com/caddyserver/caddy/v2/caddyconfig/caddyfile" | |
| ) | |
| 
 | |
| func init() { | |
| 	caddy.RegisterModule(NetWriter{}) | |
| } | |
| 
 | |
| // NetWriter implements a log writer that outputs to a network socket. | |
| type NetWriter struct { | |
| 	Address string `json:"address,omitempty"` | |
| 
 | |
| 	addr caddy.NetworkAddress | |
| } | |
| 
 | |
| // CaddyModule returns the Caddy module information. | |
| func (NetWriter) CaddyModule() caddy.ModuleInfo { | |
| 	return caddy.ModuleInfo{ | |
| 		ID:  "caddy.logging.writers.net", | |
| 		New: func() caddy.Module { return new(NetWriter) }, | |
| 	} | |
| } | |
| 
 | |
| // Provision sets up the module. | |
| func (nw *NetWriter) Provision(ctx caddy.Context) error { | |
| 	repl := caddy.NewReplacer() | |
| 	address, err := repl.ReplaceOrErr(nw.Address, true, true) | |
| 	if err != nil { | |
| 		return fmt.Errorf("invalid host in address: %v", err) | |
| 	} | |
| 
 | |
| 	nw.addr, err = caddy.ParseNetworkAddress(address) | |
| 	if err != nil { | |
| 		return fmt.Errorf("parsing network address '%s': %v", address, err) | |
| 	} | |
| 
 | |
| 	if nw.addr.PortRangeSize() != 1 { | |
| 		return fmt.Errorf("multiple ports not supported") | |
| 	} | |
| 
 | |
| 	return nil | |
| } | |
| 
 | |
| func (nw NetWriter) String() string { | |
| 	return nw.addr.String() | |
| } | |
| 
 | |
| // WriterKey returns a unique key representing this nw. | |
| func (nw NetWriter) WriterKey() string { | |
| 	return nw.addr.String() | |
| } | |
| 
 | |
| // OpenWriter opens a new network connection. | |
| func (nw NetWriter) OpenWriter() (io.WriteCloser, error) { | |
| 	return net.Dial(nw.addr.Network, nw.addr.JoinHostPort(0)) | |
| } | |
| 
 | |
| // UnmarshalCaddyfile sets up the handler from Caddyfile tokens. Syntax: | |
| // | |
| //     net <address> | |
| // | |
| func (nw *NetWriter) UnmarshalCaddyfile(d *caddyfile.Dispenser) error { | |
| 	for d.Next() { | |
| 		if !d.NextArg() { | |
| 			return d.ArgErr() | |
| 		} | |
| 		nw.Address = d.Val() | |
| 		if d.NextArg() { | |
| 			return d.ArgErr() | |
| 		} | |
| 	} | |
| 	return nil | |
| } | |
| 
 | |
| // Interface guards | |
| var ( | |
| 	_ caddy.Provisioner     = (*NetWriter)(nil) | |
| 	_ caddy.WriterOpener    = (*NetWriter)(nil) | |
| 	_ caddyfile.Unmarshaler = (*NetWriter)(nil) | |
| )
 | |
| 
 |