-
Notifications
You must be signed in to change notification settings - Fork 320
Commit
This commit does not belong to any branch on this repository, and may belong to a fork outside of the repository.
Signed-off-by: Furkan <[email protected]>
- Loading branch information
Showing
3 changed files
with
295 additions
and
0 deletions.
There are no files selected for viewing
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,105 @@ | ||
| // 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 procfs | ||
|
|
||
| import ( | ||
| "bufio" | ||
| "bytes" | ||
| "io" | ||
| "strconv" | ||
| "strings" | ||
|
|
||
| "github.com/prometheus/procfs/internal/util" | ||
| ) | ||
|
|
||
| // Module represents a single module info in the kernel. | ||
| type Module struct { | ||
| // Name is the name of the module. | ||
| Name string | ||
| // Size is the memory size of the module, in bytes | ||
| Size uint64 | ||
| // Instances is the number of instances of the module are currently loaded. | ||
| // A value of zero represents an unloaded module. | ||
| Instances uint64 | ||
| // Dependencies is the list of modules that this module depends on. | ||
| Dependencies []string | ||
| // State is the state of the module is in: Live, Loading, or Unloading are the only possible values. | ||
| State string | ||
| // Offset is a memory offset for the loaded module | ||
| Offset uint64 | ||
| // Taints is a list of taints that the module has. | ||
| Taints []string | ||
| } | ||
|
|
||
| // Modules represents a list of Module structs. | ||
| type Modules []Module | ||
|
|
||
| // Modules parses the metrics from /proc/modules file and returns a slice of | ||
| // structs containing the relevant info. | ||
| func (fs FS) Modules() ([]Module, error) { | ||
| data, err := util.ReadFileNoStat(fs.proc.Path("modules")) | ||
| if err != nil { | ||
| return nil, err | ||
| } | ||
| return parseModules(bytes.NewReader(data)) | ||
| } | ||
|
|
||
| // parseModules parses the metrics from /proc/modules file | ||
| // and returns a []Module structure. | ||
| // - https://access.redhat.com/documentation/en-us/red_hat_enterprise_linux/4/html/reference_guide/s2-proc-modules | ||
| // - https://unix.stackexchange.com/a/152527/300614 | ||
| func parseModules(r io.Reader) ([]Module, error) { | ||
| var ( | ||
| scanner = bufio.NewScanner(r) | ||
| modules = make([]Module, 0) | ||
| ) | ||
|
|
||
| for scanner.Scan() { | ||
| parts := strings.Fields(scanner.Text()) | ||
|
|
||
| module := Module{ | ||
| Name: parts[0], | ||
| Dependencies: []string{}, | ||
| State: parts[4], | ||
| Taints: []string{}, | ||
| } | ||
|
|
||
| if size, err := strconv.ParseUint(parts[1], 10, 64); err == nil { | ||
| module.Size = size | ||
| } | ||
|
|
||
| if instances, err := strconv.ParseUint(parts[2], 10, 64); err == nil { | ||
| module.Instances = instances | ||
| } | ||
|
|
||
| dependencies := parts[3] | ||
| if dependencies != "-" { | ||
| module.Dependencies = strings.Split(strings.TrimSuffix(dependencies, ","), ",") | ||
| } | ||
|
|
||
| if offset, err := strconv.ParseUint(parts[5], 10, 64); err == nil { | ||
| module.Offset = offset | ||
| } | ||
|
|
||
| // Kernel Taint State is available if parts length is greater than 6. | ||
| if len(parts) > 6 { | ||
| taints := strings.TrimSuffix(strings.TrimPrefix(parts[6], "("), ")") | ||
| module.Taints = strings.Split(taints, "") | ||
| } | ||
|
|
||
| modules = append(modules, module) | ||
| } | ||
|
|
||
| return modules, scanner.Err() | ||
| } |
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,97 @@ | ||
| // Copyright 2020 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 procfs | ||
|
|
||
| import ( | ||
| "reflect" | ||
| "testing" | ||
| ) | ||
|
|
||
| func TestProcInterrupts(t *testing.T) { | ||
| fs := getProcFixtures(t) | ||
|
|
||
| modules, err := fs.Modules() | ||
| if err != nil { | ||
| t.Fatal(err) | ||
| } | ||
|
|
||
| if want, have := 89, len(modules); want != have { | ||
| t.Errorf("want length %d, have %d", want, have) | ||
| } | ||
|
|
||
| for _, test := range []struct { | ||
| name string | ||
| index int | ||
| want Module | ||
| }{ | ||
| { | ||
| name: "no dependencies and taints", | ||
| index: 0, | ||
| want: Module{ | ||
| Name: "nft_counter", | ||
| Size: 16384, | ||
| Instances: 4, | ||
| Dependencies: []string{}, | ||
| State: "Live", | ||
| Offset: 0, | ||
| Taints: []string{}, | ||
| }, | ||
| }, | ||
| { | ||
| name: "have dependencies with no taints", | ||
| index: 11, | ||
| want: Module{ | ||
| Name: "nf_tables", | ||
| Size: 245760, | ||
| Instances: 19, | ||
| Dependencies: []string{"nft_counter", "nft_chain_nat", "nft_compat"}, | ||
| State: "Live", | ||
| Offset: 0, | ||
| Taints: []string{}, | ||
| }, | ||
| }, | ||
| { | ||
| name: "have multiple taints with multiple dependencies", | ||
| index: 83, | ||
| want: Module{ | ||
| Name: "drm", | ||
| Size: 622592, | ||
| Instances: 3, | ||
| Dependencies: []string{"virtio_gpu", "drm_kms_helper"}, | ||
| State: "Live", | ||
| Offset: 0, | ||
| Taints: []string{"P", "O", "E"}, | ||
| }, | ||
| }, | ||
| { | ||
| name: "have single taint with single dependency", | ||
| index: 88, | ||
| want: Module{ | ||
| Name: "failover", | ||
| Size: 16384, | ||
| Instances: 1, | ||
| Dependencies: []string{"net_failover"}, | ||
| State: "Live", | ||
| Offset: 0, | ||
| Taints: []string{"P"}, | ||
| }, | ||
| }, | ||
| } { | ||
| t.Run(test.name, func(t *testing.T) { | ||
| if want, have := test.want, modules[test.index]; !reflect.DeepEqual(want, have) { | ||
| t.Errorf("want %v, have %v", want, have) | ||
| } | ||
| }) | ||
| } | ||
| } |
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters