metrics.txt

# HELP http_requests_total The total number of HTTP requests.
# TYPE http_requests_total counter
http_requests_total{method="post",code="200"} 1027 1395066363000
http_requests_total{method="post",code="400"}    3 1395066363000

# Escaping in label values:
msdos_file_access_time_seconds{path="C:\\DIR\\FILE.TXT",error="Cannot find file:\n\"FILE.TXT\""} 1.458255915e9

# Minimalistic line:
metric_without_timestamp_and_labels 12.47

# A weird metric from before the epoch:
something_weird{problem="division by zero"} +Inf -3982045

# A histogram, which has a pretty complex representation in the text format:
# HELP http_request_duration_seconds A histogram of the request duration.
# TYPE http_request_duration_seconds histogram
http_request_duration_seconds_bucket{le="0.05"} 24054
http_request_duration_seconds_bucket{le="0.1"} 33444
http_request_duration_seconds_bucket{le="0.2"} 100392
http_request_duration_seconds_bucket{le="0.5"} 129389
http_request_duration_seconds_bucket{le="1"} 133988
http_request_duration_seconds_bucket{le="+Inf"} 144320
http_request_duration_seconds_sum 53423
http_request_duration_seconds_count 144320

# Finally a summary, which has a complex representation, too:
# HELP rpc_duration_seconds A summary of the RPC duration in seconds.
# TYPE rpc_duration_seconds summary
rpc_duration_seconds{quantile="0.01"} 3102
rpc_duration_seconds{quantile="0.05"} 3272
rpc_duration_seconds{quantile="0.5"} 4773
rpc_duration_seconds{quantile="0.9"} 9001
rpc_duration_seconds{quantile="0.99"} 76656
rpc_duration_seconds_sum 1.7560473e+07
rpc_duration_seconds_count 2693

prom2json_metrics.json

[
   {
      "name":"something_weird",
      "help":"",
      "type":"UNTYPED",
      "metrics":[
         {
            "labels":{
               "problem":"division by zero"
            },
            "value":"+Inf"
         }
      ]
   },
   {
      "name":"http_request_duration_seconds",
      "help":"A histogram of the request duration.",
      "type":"HISTOGRAM",
      "metrics":[
         {
            "buckets":{
               "+Inf":"144320",
               "0.05":"24054",
               "0.1":"33444",
               "0.2":"100392",
               "0.5":"129389",
               "1":"133988"
            },
            "count":"144320",
            "sum":"0"
         }
      ]
   },
   {
      "name":"rpc_duration_seconds",
      "help":"A summary of the RPC duration in seconds.",
      "type":"SUMMARY",
      "metrics":[
         {
            "quantiles":{
               "0.01":"3102",
               "0.05":"3272",
               "0.5":"4773",
               "0.9":"9001",
               "0.99":"76656"
            },
            "count":"2693",
            "sum":"1.7560473e+07"
         }
      ]
   },
   {
      "name":"http_requests_total",
      "help":"The total number of HTTP requests.",
      "type":"COUNTER",
      "metrics":[
         {
            "labels":{
               "code":"200",
               "method":"post"
            },
            "value":"1027"
         },
         {
            "labels":{
               "code":"400",
               "method":"post"
            },
            "value":"3"
         }
      ]
   },
   {
      "name":"msdos_file_access_time_seconds",
      "help":"",
      "type":"UNTYPED",
      "metrics":[
         {
            "labels":{
               "error":"Cannot find file:\n\"FILE.TXT\"",
               "path":"C:\\DIR\\FILE.TXT"
            },
            "value":"1.458255915e+09"
         }
      ]
   },
   {
      "name":"metric_without_timestamp_and_labels",
      "help":"",
      "type":"UNTYPED",
      "metrics":[
         {
            "value":"12.47"
         }
      ]
   }
]