| // Copyright 2018 The Prometheus Authors |
| // Licensed under the Apache License, Version 2.0 (the "License"); |
| // you may not use this file except in compliance with the License. |
| // You may obtain a copy of the License at |
| // |
| // http://www.apache.org/licenses/LICENSE-2.0 |
| // |
| // Unless required by applicable law or agreed to in writing, software |
| // distributed under the License is distributed on an "AS IS" BASIS, |
| // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| // See the License for the specific language governing permissions and |
| // limitations under the License. |
| |
| package nfs |
| |
| import ( |
| "bufio" |
| "fmt" |
| "io" |
| "strings" |
| |
| "github.com/prometheus/procfs/internal/util" |
| ) |
| |
| // ParseServerRPCStats returns stats read from /proc/net/rpc/nfsd |
| func ParseServerRPCStats(r io.Reader) (*ServerRPCStats, error) { |
| stats := &ServerRPCStats{} |
| |
| scanner := bufio.NewScanner(r) |
| for scanner.Scan() { |
| line := scanner.Text() |
| parts := strings.Fields(scanner.Text()) |
| // require at least <key> <value> |
| if len(parts) < 2 { |
| return nil, fmt.Errorf("invalid NFSd metric line %q", line) |
| } |
| label := parts[0] |
| |
| var values []uint64 |
| var err error |
| if label == "th" { |
| if len(parts) < 3 { |
| return nil, fmt.Errorf("invalid NFSd th metric line %q", line) |
| } |
| values, err = util.ParseUint64s(parts[1:3]) |
| } else { |
| values, err = util.ParseUint64s(parts[1:]) |
| } |
| if err != nil { |
| return nil, fmt.Errorf("error parsing NFSd metric line: %s", err) |
| } |
| |
| switch metricLine := parts[0]; metricLine { |
| case "rc": |
| stats.ReplyCache, err = parseReplyCache(values) |
| case "fh": |
| stats.FileHandles, err = parseFileHandles(values) |
| case "io": |
| stats.InputOutput, err = parseInputOutput(values) |
| case "th": |
| stats.Threads, err = parseThreads(values) |
| case "ra": |
| stats.ReadAheadCache, err = parseReadAheadCache(values) |
| case "net": |
| stats.Network, err = parseNetwork(values) |
| case "rpc": |
| stats.ServerRPC, err = parseServerRPC(values) |
| case "proc2": |
| stats.V2Stats, err = parseV2Stats(values) |
| case "proc3": |
| stats.V3Stats, err = parseV3Stats(values) |
| case "proc4": |
| stats.ServerV4Stats, err = parseServerV4Stats(values) |
| case "proc4ops": |
| stats.V4Ops, err = parseV4Ops(values) |
| default: |
| return nil, fmt.Errorf("unknown NFSd metric line %q", metricLine) |
| } |
| if err != nil { |
| return nil, fmt.Errorf("errors parsing NFSd metric line: %s", err) |
| } |
| } |
| |
| if err := scanner.Err(); err != nil { |
| return nil, fmt.Errorf("error scanning NFSd file: %s", err) |
| } |
| |
| return stats, nil |
| } |