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Fix metrics injection #3315

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merged 3 commits into from
Oct 18, 2016
Merged

Fix metrics injection #3315

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de34ef8
Fix metrics being injected after node initalization
Kubuxu Oct 18, 2016
e254f0d
test: check if metrics work in sharness
Kubuxu Oct 18, 2016
06a5381
feat: make metrics injection log an error instead of warning
Kubuxu Oct 18, 2016
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11 changes: 7 additions & 4 deletions cmd/ipfs/daemon.go
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Original file line number Diff line number Diff line change
Expand Up @@ -181,6 +181,13 @@ func defaultMux(path string) corehttp.ServeOption {
var fileDescriptorCheck = func() error { return nil }

func daemonFunc(req cmds.Request, res cmds.Response) {
// Inject metrics before we do anything

err := mprome.Inject()
if err != nil {
log.Errorf("Injecting prometheus handler for metrics failed with message: %s\n", err.Error())
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How will :5001/debug/metrics/prometheus behave if Inject() fails?

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It will miss the metrics that are being added with metrics-interface and that is it.

Without this patch it runs as if the Inject has failed.

}

// let the user know we're going.
fmt.Printf("Initializing daemon...\n")

Expand Down Expand Up @@ -388,10 +395,6 @@ func daemonFunc(req cmds.Request, res cmds.Response) {
}

// initialize metrics collector
err = mprome.Inject()
if err != nil {
log.Warningf("Injecting prometheus handler for metrics failed with message: %s\n", err.Error())
}
prometheus.MustRegister(&corehttp.IpfsNodeCollector{Node: node})

fmt.Printf("Daemon is ready\n")
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6 changes: 6 additions & 0 deletions test/sharness/t0600-issues-and-regressions-online.sh
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Expand Up @@ -27,6 +27,12 @@ test_expect_success "no panic traces on daemon" '
test_must_fail grep "nil pointer dereference" daemon_err
'

test_expect_success "metrics work" '
curl "$API_ADDR/debug/metrics/prometheus" > pro_data &&
grep "ipfs_bs_cache_arc_hits_total" < pro_data ||
test_fsh cat pro_data
'

test_kill_ipfs_daemon

test_expect_success "ipfs daemon --offline --mount fails - #2995" '
Expand Down