Test/poll daemon #851
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,106 @@ | ||
| // pollEndpoint is a helper utility that waits for a http endpoint to be reachable and return with http.StatusOK | ||
| package main | ||
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| import ( | ||
| "flag" | ||
| "net" | ||
| "net/http" | ||
| "net/url" | ||
| "os" | ||
| "syscall" | ||
| "time" | ||
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| log "github.com/jbenet/go-ipfs/Godeps/_workspace/src/github.com/Sirupsen/logrus" | ||
| ma "github.com/jbenet/go-ipfs/Godeps/_workspace/src/github.com/jbenet/go-multiaddr" | ||
| manet "github.com/jbenet/go-ipfs/Godeps/_workspace/src/github.com/jbenet/go-multiaddr-net" | ||
| ) | ||
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| var ( | ||
| host = flag.String("host", "/ip4/127.0.0.1/tcp/5001", "the multiaddr host to dial on") | ||
| endpoint = flag.String("ep", "/version", "which http endpoint path to hit") | ||
| tries = flag.Int("tries", 10, "how many tries to make before failing") | ||
| timeout = flag.Duration("tout", time.Second, "how long to wait between attempts") | ||
| verbose = flag.Bool("v", false, "verbose logging") | ||
| ) | ||
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| func main() { | ||
| flag.Parse() | ||
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| // extract address from host flag | ||
| addr, err := ma.NewMultiaddr(*host) | ||
| if err != nil { | ||
| log.WithField("err", err).Fatal("NewMultiaddr() failed") | ||
| } | ||
| p := addr.Protocols() | ||
| if len(p) < 2 { | ||
| log.WithField("addr", addr).Fatal("need to protocolls in host flag.") | ||
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There was a problem hiding this comment.
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| } | ||
| _, host, err := manet.DialArgs(addr) | ||
| if err != nil { | ||
| log.WithField("err", err).Fatal("manet.DialArgs() failed") | ||
| } | ||
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| if *verbose { // lower log level | ||
| log.SetLevel(log.DebugLevel) | ||
| } | ||
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| // construct url to dial | ||
| var u url.URL | ||
| u.Scheme = "http" | ||
| u.Host = host | ||
| u.Path = *endpoint | ||
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| // show what we got | ||
| start := time.Now() | ||
| log.WithFields(log.Fields{ | ||
| "when": start, | ||
| "tries": *tries, | ||
| "timeout": *timeout, | ||
| "url": u.String(), | ||
| }).Debug("starting") | ||
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| for *tries > 0 { | ||
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| f := log.Fields{"tries": *tries} | ||
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| resp, err := http.Get(u.String()) | ||
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| if err == nil { | ||
| resp.Body.Close() | ||
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| if resp.StatusCode == http.StatusOK { | ||
| f["took"] = time.Since(start) | ||
| log.WithFields(f).Println("status ok - endpoint reachable") | ||
| os.Exit(0) | ||
|
There was a problem hiding this comment. i'd try to return out to a simple func like: func main() {
if err := run(); err != nil {
log.Println("failed.")
os.Exit(1)
}
}that way if someone comes in and modifies things, the |
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| } | ||
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| f["status"] = resp.Status | ||
| log.WithFields(f).Warn("response not okay") | ||
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| } else if urlErr, ok := err.(*url.Error); ok { // expected error from http.Get() | ||
| f["urlErr"] = urlErr | ||
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| if urlErr.Op != "Get" || urlErr.URL != *endpoint { | ||
| f["op"] = urlErr.Op | ||
| f["url"] = urlErr.URL | ||
| log.WithFields(f).Error("way to funky buisness..!") | ||
| } | ||
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| if opErr, ok := urlErr.Err.(*net.OpError); ok { | ||
| f["opErr"] = opErr | ||
| f["connRefused"] = opErr.Err == syscall.ECONNREFUSED | ||
| f["temporary"] = opErr.Temporary() | ||
| log.WithFields(f).Println("net.OpError") | ||
| } | ||
| } else { // unexpected error from http.Get() | ||
| f["err"] = err | ||
| log.WithFields(f).Error("unknown error") | ||
| } | ||
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| time.Sleep(*timeout) | ||
| *tries-- | ||
|
There was a problem hiding this comment. i'd break this up into smaller funcs? |
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| } | ||
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| log.Println("failed.") | ||
| os.Exit(1) | ||
| } | ||
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maybe move this binary into
/thirdparty/pollEndpoint?