mirror of
https://github.com/divan/expvarmon.git
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e7f60e5a45
Occasionally expvar output contains keys that are hostnames,
IP addresses, or filenames that contain the "." character. For
example:
{
"bleve": {
"bootDuration": 16559,
"indexes": {
"bench.bleve": {
"index": {
"analysis_time": 10889841135,
"batches": 145,
"deletes": 0,
"errors": 0,
"index_time": 21277401883,
"lookup_queue_len": 0,
"updates": 14500
},
"search_time": 0,
"searches": 0
}
}
}
...
}
I can now chart the lookup_queue_len value using the var:
bleve.indexes.bench\.bleve.index.lookup_queue_len
This partially addresses #11 (still does not escape colon character).
93 lines
2.7 KiB
Go
93 lines
2.7 KiB
Go
package main
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import (
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"testing"
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)
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func TestVarName(t *testing.T) {
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v := VarName("memstats.Alloc")
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slice := v.ToSlice()
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if len(slice) != 2 || slice[0] != "memstats" || slice[1] != "Alloc" {
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t.Fatalf("ToSlice failed: %v", slice)
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}
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short := v.Short()
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if short != "Alloc" {
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t.Fatalf("Expecting Short() to be 'Alloc', but got: %s", short)
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}
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kind := v.Kind()
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if kind != KindDefault {
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t.Fatalf("Expecting kind to be %v, but got: %v", KindDefault, kind)
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}
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v = VarName("mem:memstats.Alloc")
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slice = v.ToSlice()
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if len(slice) != 2 || slice[0] != "memstats" || slice[1] != "Alloc" {
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t.Fatalf("ToSlice failed: %v", slice)
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}
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short = v.Short()
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if short != "Alloc" {
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t.Fatalf("Expecting Short() to be 'Alloc', but got: %s", short)
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}
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kind = v.Kind()
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if kind != KindMemory {
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t.Fatalf("Expecting kind to be %v, but got: %v", KindMemory, kind)
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}
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v = VarName("duration:ResponseTimes.API.Users")
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kind = v.Kind()
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if kind != KindDuration {
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t.Fatalf("Expecting kind to be %v, but got: %v", KindDuration, kind)
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}
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// single \. escapes the dot
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v = VarName(`bleve.indexes.bench\.bleve.index.lookup_queue_len`)
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slice = v.ToSlice()
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if len(slice) != 5 || slice[0] != "bleve" || slice[1] != "indexes" || slice[2] != "bench.bleve" ||
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slice[3] != "index" || slice[4] != "lookup_queue_len" {
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t.Fatalf("ToSlice failed: %v", slice)
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}
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// double \\. escapes backslash, not dot
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v = VarName(`bleve.indexes.bench\\.bleve.index.lookup_queue_len`)
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slice = v.ToSlice()
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if len(slice) != 6 || slice[0] != "bleve" || slice[1] != "indexes" || slice[2] != "bench\\" ||
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slice[3] != "bleve" || slice[4] != "index" || slice[5] != "lookup_queue_len" {
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t.Fatalf("ToSlice failed: %v", slice)
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}
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// triple \\\. escapes backslash then dot
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v = VarName(`bleve.indexes.bench\\\.bleve.index.lookup_queue_len`)
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slice = v.ToSlice()
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if len(slice) != 5 || slice[0] != "bleve" || slice[1] != "indexes" || slice[2] != "bench\\.bleve" ||
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slice[3] != "index" || slice[4] != "lookup_queue_len" {
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t.Fatalf("ToSlice failed: %v", slice)
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}
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// quadruple \\\\. escapes two backslashes, not dot
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v = VarName(`bleve.indexes.bench\\\\.bleve.index.lookup_queue_len`)
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slice = v.ToSlice()
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if len(slice) != 6 || slice[0] != "bleve" || slice[1] != "indexes" || slice[2] != "bench\\\\" ||
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slice[3] != "bleve" || slice[4] != "index" || slice[5] != "lookup_queue_len" {
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t.Fatalf("ToSlice failed: %v", slice)
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}
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// unsupported \x passes through unaltered
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v = VarName(`bleve.indexes.bench\xbleve.index.lookup_queue_len`)
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slice = v.ToSlice()
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if len(slice) != 5 || slice[0] != "bleve" || slice[1] != "indexes" || slice[2] != "bench\\xbleve" ||
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slice[3] != "index" || slice[4] != "lookup_queue_len" {
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t.Fatalf("ToSlice failed: %v", slice)
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}
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}
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