The gocbmgr from couchbase

This repository is unmaintained and part of Operator until 2.1. Please delete when it goes out of support. Note it was also used on legacy versions of Cloud, so see them first!

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panic on couch down

Example:

func getClusterStats(couch *cbmgr.Couchbase) {
	clstInf, err := couch.ClusterInfo()
	if err != nil {
		log.Printf("getClusterStats error:%s", err.Error())
	}
	if clstInf.Balanced {
		ClusterStats.WithLabelValues("balanced").Set(0)
	} else {
		ClusterStats.WithLabelValues("balanced").Set(1)
	}

if node down, we have panic on clstInf.Balanced (nil pointer dereference)

2018/03/15 19:52:21 [Get http://localhost:8091/pools/default/buckets/: dial tcp 127.0.0.1:8091: connect: connection refused]
2018/03/15 19:52:21 getClusterStats error:[Get http://localhost:8091/pools/default: dial tcp 127.0.0.1:8091: connect: connection refused]
panic: runtime error: invalid memory address or nil pointer dereference
[signal SIGSEGV: segmentation violation code=0x1 addr=0x50 pc=0x6b8e7d]

goroutine 9 [running]:
main.getClusterStats(0xc420096240)
        /Users/elvis/prog/go/src/github.com/lelvisl/couchbase_exporter/couchbase_stats.go:47 +0x5d
main.main.func1(0xc420096240)
        /Users/elvis/prog/go/src/github.com/lelvisl/couchbase_exporter/couchbase_exporter.go:56 +0x39
created by main.main
        /Users/elvis/prog/go/src/github.com/lelvisl/couchbase_exporter/couchbase_exporter.go:53 +0x227

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