c144da2524
* - add an option for block profiling to plugin pprof * - move option block into nested block
78 lines
1.4 KiB
Go
78 lines
1.4 KiB
Go
package pprof
|
|
|
|
import (
|
|
"net"
|
|
"strconv"
|
|
"sync"
|
|
|
|
"github.com/coredns/coredns/plugin"
|
|
clog "github.com/coredns/coredns/plugin/pkg/log"
|
|
|
|
"github.com/mholt/caddy"
|
|
)
|
|
|
|
var log = clog.NewWithPlugin("pprof")
|
|
|
|
const defaultAddr = "localhost:6053"
|
|
|
|
func init() {
|
|
caddy.RegisterPlugin("pprof", caddy.Plugin{
|
|
ServerType: "dns",
|
|
Action: setup,
|
|
})
|
|
}
|
|
|
|
func setup(c *caddy.Controller) error {
|
|
h := &handler{addr: defaultAddr}
|
|
|
|
i := 0
|
|
for c.Next() {
|
|
if i > 0 {
|
|
return plugin.Error("pprof", plugin.ErrOnce)
|
|
}
|
|
i++
|
|
|
|
args := c.RemainingArgs()
|
|
if len(args) == 1 {
|
|
h.addr = args[0]
|
|
_, _, e := net.SplitHostPort(h.addr)
|
|
if e != nil {
|
|
return plugin.Error("pprof", c.Errf("%v", e))
|
|
}
|
|
}
|
|
|
|
if len(args) > 1 {
|
|
return plugin.Error("pprof", c.ArgErr())
|
|
}
|
|
|
|
for c.NextBlock() {
|
|
switch c.Val() {
|
|
case "block":
|
|
args := c.RemainingArgs()
|
|
if len(args) > 1 {
|
|
return plugin.Error("pprof", c.ArgErr())
|
|
}
|
|
h.rateBloc = 1
|
|
if len(args) > 0 {
|
|
t, err := strconv.Atoi(args[0])
|
|
if err != nil {
|
|
return plugin.Error("pprof", c.Errf("property '%s' invalid integer value '%v'", "block", args[0]))
|
|
}
|
|
h.rateBloc = t
|
|
}
|
|
default:
|
|
return plugin.Error("pprof", c.Errf("unknown property '%s'", c.Val()))
|
|
}
|
|
}
|
|
|
|
}
|
|
|
|
pprofOnce.Do(func() {
|
|
c.OnStartup(h.Startup)
|
|
c.OnShutdown(h.Shutdown)
|
|
})
|
|
|
|
return nil
|
|
}
|
|
|
|
var pprofOnce sync.Once
|