Query one metric from Prometheus

Usage

query_prometheus(urlq, metric, start_time, end_time, step)

Arguments

urlq: Prometheus query_range url.
metric: Name of the metric, one of metrics.
start_time, end_time: Start and end time, in this format: "2025-01-31T11:48:08Z".
step: Time between two readings, such as "10m".

Value

The values of the result: one matrix of times and values per series of the metric, or NULL when the answer cannot be read. An error when the server cannot be reached, takes longer than 15 seconds or answers with an error.

Examples

if (FALSE) { # \dontrun{
golemenviro:::query_prometheus(
  "http://pip1.crabdance.com:1507/api/v1/query_range", "temperature",
  format(Sys.time() - 3600, "%Y-%m-%dT%H:%M:%SZ"), format(Sys.time(), "%Y-%m-%dT%H:%M:%SZ"), "1m"
)
} # }