1 // Copyright 2020 The Prometheus Authors 2 // Licensed under the Apache License, Version 2.0 (the "License"); 3 // you may not use this file except in compliance with the License. 4 // You may obtain a copy of the License at 5 // 6 // http://www.apache.org/licenses/LICENSE-2.0 7 // 8 // Unless required by applicable law or agreed to in writing, software 9 // distributed under the License is distributed on an "AS IS" BASIS, 10 // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 11 // See the License for the specific language governing permissions and 12 // limitations under the License. 13 14 package procfs 15 16 type ( 17 // NetTCP represents the contents of /proc/net/tcp{,6} file without the header. 18 NetTCP []*netIPSocketLine 19 20 // NetTCPSummary provides already computed values like the total queue lengths or 21 // the total number of used sockets. In contrast to NetTCP it does not collect 22 // the parsed lines into a slice. 23 NetTCPSummary NetIPSocketSummary 24 ) 25 26 // NetTCP returns the IPv4 kernel/networking statistics for TCP datagrams 27 // read from /proc/net/tcp. 28 func (fs FS) NetTCP() (NetTCP, error) { 29 return newNetTCP(fs.proc.Path("net/tcp")) 30 } 31 32 // NetTCP6 returns the IPv6 kernel/networking statistics for TCP datagrams 33 // read from /proc/net/tcp6. 34 func (fs FS) NetTCP6() (NetTCP, error) { 35 return newNetTCP(fs.proc.Path("net/tcp6")) 36 } 37 38 // NetTCPSummary returns already computed statistics like the total queue lengths 39 // for TCP datagrams read from /proc/net/tcp. 40 func (fs FS) NetTCPSummary() (*NetTCPSummary, error) { 41 return newNetTCPSummary(fs.proc.Path("net/tcp")) 42 } 43 44 // NetTCP6Summary returns already computed statistics like the total queue lengths 45 // for TCP datagrams read from /proc/net/tcp6. 46 func (fs FS) NetTCP6Summary() (*NetTCPSummary, error) { 47 return newNetTCPSummary(fs.proc.Path("net/tcp6")) 48 } 49 50 // newNetTCP creates a new NetTCP{,6} from the contents of the given file. 51 func newNetTCP(file string) (NetTCP, error) { 52 n, err := newNetIPSocket(file) 53 n1 := NetTCP(n) 54 return n1, err 55 } 56 57 func newNetTCPSummary(file string) (*NetTCPSummary, error) { 58 n, err := newNetIPSocketSummary(file) 59 if n == nil { 60 return nil, err 61 } 62 n1 := NetTCPSummary(*n) 63 return &n1, err 64 } 65