forked from caddyserver/caddy
/
setup.go
115 lines (96 loc) · 2.29 KB
/
setup.go
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package log
import (
"github.com/mholt/caddy"
"github.com/mholt/caddy/caddyhttp/httpserver"
)
// setup sets up the logging middleware.
func setup(c *caddy.Controller) error {
rules, err := logParse(c)
if err != nil {
return err
}
for _, rule := range rules {
for _, entry := range rule.Entries {
entry.Log.Attach(c)
}
}
httpserver.GetConfig(c).AddMiddleware(func(next httpserver.Handler) httpserver.Handler {
return Logger{Next: next, Rules: rules, ErrorFunc: httpserver.DefaultErrorFunc}
})
return nil
}
func logParse(c *caddy.Controller) ([]*Rule, error) {
var rules []*Rule
for c.Next() {
args := c.RemainingArgs()
var logRoller *httpserver.LogRoller
logRoller = httpserver.DefaultLogRoller()
for c.NextBlock() {
what := c.Val()
if !c.NextArg() {
return nil, c.ArgErr()
}
where := c.Val()
// only support roller related options inside a block
if !httpserver.IsLogRollerSubdirective(what) {
return nil, c.ArgErr()
}
if err := httpserver.ParseRoller(logRoller, what, where); err != nil {
return nil, err
}
}
if len(args) == 0 {
// Nothing specified; use defaults
rules = appendEntry(rules, "/", &Entry{
Log: &httpserver.Logger{
Output: DefaultLogFilename,
Roller: logRoller,
},
Format: DefaultLogFormat,
})
} else if len(args) == 1 {
// Only an output file specified
rules = appendEntry(rules, "/", &Entry{
Log: &httpserver.Logger{
Output: args[0],
Roller: logRoller,
},
Format: DefaultLogFormat,
})
} else {
// Path scope, output file, and maybe a format specified
format := DefaultLogFormat
if len(args) > 2 {
switch args[2] {
case "{common}":
format = CommonLogFormat
case "{combined}":
format = CombinedLogFormat
default:
format = args[2]
}
}
rules = appendEntry(rules, args[0], &Entry{
Log: &httpserver.Logger{
Output: args[1],
Roller: logRoller,
},
Format: format,
})
}
}
return rules, nil
}
func appendEntry(rules []*Rule, pathScope string, entry *Entry) []*Rule {
for _, rule := range rules {
if rule.PathScope == pathScope {
rule.Entries = append(rule.Entries, entry)
return rules
}
}
rules = append(rules, &Rule{
PathScope: pathScope,
Entries: []*Entry{entry},
})
return rules
}