procsys 0.7.0

Rust library to retrieve system, kernel, and process metrics from the pseudo-filesystems /proc and /sys
Documentation 
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332

use regex::Regex;
use serde::Serialize;
use std::{
    collections::HashMap,
    fs,
    path::{Path, PathBuf},
};

use crate::{
    error::{CollectResult, MetricError},
    utils,
};

#[derive(Debug, Serialize, Clone, Default)]
pub struct SASPhy {
    /// /sys/class/sas_phy/<Name>/sas_address
    pub sas_address: String,

    /// /sys/class/sas_phy/<Name>/device/port
    pub sas_port: String,

    /// /sys/class/sas_phy/<Name>/device_type
    pub device_type: String,

    /// /sys/class/sas_phy/<Name>/initiator_port_protocols
    pub initiator_port_protocols: Vec<String>,

    /// /sys/class/sas_phy/<Name>/invalid_dword_count
    pub invalid_dword_count: i64,

    /// /sys/class/sas_phy/<Name>/loss_of_dword_sync_count
    pub loss_of_dword_sync_count: i64,

    /// /sys/class/sas_phy/<Name>/maximum_linkrate
    pub maximum_linkrate: f64,

    /// /sys/class/sas_phy/<Name>/maximum_linkrate_hw
    pub maximum_linkrate_hw: f64,

    /// /sys/class/sas_phy/<Name>/minimum_linkrate
    pub minimum_linkrate: f64,

    /// /sys/class/sas_phy/<Name>/minimum_linkrate_hw
    pub minimum_linkrate_hw: f64,

    /// /sys/class/sas_phy/<Name>/negotiated_linkrate
    pub negotiated_linkrate: f64,

    /// /sys/class/sas_phy/<Name>/phy_identifier
    pub phy_identifier: String,

    /// /sys/class/sas_phy/<Name>/phy_reset_problem_count
    pub phy_reset_problem_count: i64,

    /// /sys/class/sas_phy/<Name>/running_disparity_error_count
    pub running_disparity_error_count: i64,

    /// /sys/class/sas_phy/<Name>/target_port_protocols
    pub target_port_protocols: Vec<String>,
}

impl SASPhy {
    fn new() -> Self {
        Default::default()
    }
}

/// collects sas phys information
/// # Example
/// ```
/// use procsys::sysfs::class_sas_phy;
///
/// let sas_phys = class_sas_phy::collect().expect("sas phys information");
/// let json_output = serde_json::to_string_pretty(&sas_phys).unwrap();
/// println!("{}", json_output);
///
/// ```
pub fn collect() -> CollectResult<HashMap<String, SASPhy>> {
    collect_from("/sys/class/sas_phy/")
}

fn collect_from(dirname: &str) -> CollectResult<HashMap<String, SASPhy>> {
    let mut sas_phys: HashMap<String, SASPhy> = HashMap::new();
    let sas_phy_path = PathBuf::from(dirname);

    let re_port = match Regex::new(r"^port-[0-9:]+$") {
        Ok(r) => r,
        Err(err) => return Err(MetricError::RegexError(err)),
    };

    for sas_phy_item in utils::list_dir_content(&sas_phy_path, "", "sas_phy") {
        let mut sas_phy = SASPhy::new();
        let mut sas_phy_item_path = sas_phy_path.clone();
        sas_phy_item_path.push(&sas_phy_item);

        for phy_info in utils::list_dir_content(&sas_phy_item_path, "", &sas_phy_item) {
            match phy_info.as_str() {
                "sas_address" => {
                    sas_phy.sas_address =
                        utils::collect_info_string("sas_address", &sas_phy_item_path)?
                            .unwrap_or_default();
                }
                "device" => {
                    let mut sas_phy_ports_path = sas_phy_item_path.clone();
                    sas_phy_ports_path.push("device");
                    sas_phy_ports_path.push("port");
                    sas_phy.sas_port = match fs::read_link(&sas_phy_ports_path) {
                        Ok(p) => {
                            let port = p
                                .file_name()
                                .unwrap_or_default()
                                .to_str()
                                .unwrap_or_default();

                            if re_port.is_match(port) {
                                port.to_string()
                            } else {
                                "".to_string()
                            }
                        }
                        Err(err) => return Err(MetricError::IOError(sas_phy_ports_path, err)),
                    };
                }
                "device_type" => {
                    sas_phy.device_type =
                        utils::collect_info_string("device_type", &sas_phy_item_path)?
                            .unwrap_or_default();
                }
                "initiator_port_protocols" => {
                    let port_protocols =
                        utils::collect_info_string("initiator_port_protocols", &sas_phy_item_path)?
                            .unwrap_or_default();
                    let initiator_port_protocols: Vec<String> = port_protocols
                        .trim()
                        .replace(", ", ",")
                        .split(',')
                        .filter(|s| !s.is_empty())
                        .map(str::to_string)
                        .collect();

                    sas_phy.initiator_port_protocols = initiator_port_protocols
                }
                "invalid_dword_count" => {
                    sas_phy.invalid_dword_count =
                        utils::collect_info_i64("invalid_dword_count", &sas_phy_item_path)?
                            .unwrap_or_default();
                }
                "loss_of_dword_sync_count" => {
                    sas_phy.loss_of_dword_sync_count =
                        utils::collect_info_i64("loss_of_dword_sync_count", &sas_phy_item_path)?
                            .unwrap_or_default();
                }
                "maximum_linkrate" => {
                    let linkrate = get_linkrate("maximum_linkrate", &sas_phy_item_path)?;
                    sas_phy.maximum_linkrate = linkrate;
                }
                "maximum_linkrate_hw" => {
                    let linkrate = get_linkrate("maximum_linkrate_hw", &sas_phy_item_path)?;
                    sas_phy.maximum_linkrate_hw = linkrate;
                }
                "minimum_linkrate" => {
                    let linkrate = get_linkrate("minimum_linkrate", &sas_phy_item_path)?;
                    sas_phy.minimum_linkrate = linkrate;
                }
                "minimum_linkrate_hw" => {
                    let linkrate = get_linkrate("minimum_linkrate_hw", &sas_phy_item_path)?;
                    sas_phy.minimum_linkrate_hw = linkrate;
                }
                "negotiated_linkrate" => {
                    let linkrate = get_linkrate("negotiated_linkrate", &sas_phy_item_path)?;
                    sas_phy.negotiated_linkrate = linkrate;
                }
                "phy_identifier" => {
                    sas_phy.phy_identifier =
                        utils::collect_info_string("phy_identifier", &sas_phy_item_path)?
                            .unwrap_or_default();
                }
                "phy_reset_problem_count" => {
                    sas_phy.phy_reset_problem_count =
                        utils::collect_info_i64("phy_reset_problem_count", &sas_phy_item_path)?
                            .unwrap_or_default();
                }
                "running_disparity_error_count" => {
                    sas_phy.running_disparity_error_count = utils::collect_info_i64(
                        "running_disparity_error_count",
                        &sas_phy_item_path,
                    )?
                    .unwrap_or_default();
                }
                "target_port_protocols" => {
                    let port_protocols =
                        utils::collect_info_string("target_port_protocols", &sas_phy_item_path)?
                            .unwrap_or_default();
                    let target_port_protocols: Vec<String> = port_protocols
                        .trim()
                        .replace(", ", ",")
                        .split(',')
                        .filter(|s| !s.is_empty())
                        .map(str::to_string)
                        .collect();

                    sas_phy.target_port_protocols = target_port_protocols
                }
                _ => {}
            }
        }

        sas_phys.insert(sas_phy_item, sas_phy);
    }

    Ok(sas_phys)
}

fn get_linkrate(link: &str, phy_path: &Path) -> CollectResult<f64> {
    let linkrate = utils::collect_info_string(link, phy_path)?.unwrap_or_default();

    let linkrate_items: Vec<String> = linkrate
        .trim()
        .split(' ')
        .filter(|s| !s.is_empty())
        .map(str::to_string)
        .collect();

    if linkrate_items.is_empty() {
        return Ok(0.0);
    }

    let linkrate = match linkrate_items[0].parse::<f64>() {
        Ok(f) => f,
        Err(err) => {
            return Err(MetricError::ParseFloatError(
                linkrate_items[0].to_owned(),
                err,
            ))
        }
    };

    Ok(linkrate)
}

#[cfg(test)]
mod tests {
    use super::*;

    #[test]
    fn sas_phy_information() {
        let sas_phys =
            collect_from("test_data/fixtures/sys/class/sas_phy/").expect("sas phys information");

        for (phy_name, phy_info) in sas_phys {
            match phy_name.as_str() {
                "phy-11:0:2" => {
                    assert_eq!(phy_info.sas_address, "0x5000ccab0200947e");
                    assert_eq!(phy_info.sas_port, "port-11:0:0");
                    assert_eq!(phy_info.device_type, "edge expander");
                    assert_eq!(phy_info.initiator_port_protocols, ["smp"]);
                    assert_eq!(phy_info.invalid_dword_count, 18);
                    assert_eq!(phy_info.loss_of_dword_sync_count, 1);
                    assert_eq!(phy_info.maximum_linkrate, 12.0);
                    assert_eq!(phy_info.maximum_linkrate_hw, 12.0);
                    assert_eq!(phy_info.minimum_linkrate, 1.5);
                    assert_eq!(phy_info.minimum_linkrate_hw, 1.5);
                    assert_eq!(phy_info.negotiated_linkrate, 6.0);
                    assert_eq!(phy_info.phy_identifier, "2");
                    assert_eq!(phy_info.phy_reset_problem_count, 0);
                    assert_eq!(phy_info.running_disparity_error_count, 18);
                    assert_eq!(phy_info.target_port_protocols, ["smp"]);
                }
                "phy-11:0:4" => {}
                "phy-11:0:6" => {}
                "phy-11:7" => {}
                "phy-11:8" => {
                    assert_eq!(phy_info.sas_address, "0x500062b2047b51c4");
                    assert_eq!(phy_info.sas_port, "port-11:0");
                    assert_eq!(phy_info.device_type, "end device");
                    assert_eq!(phy_info.initiator_port_protocols.len(), 3);
                    assert_eq!(phy_info.invalid_dword_count, 0);
                    assert_eq!(phy_info.loss_of_dword_sync_count, 0);
                    assert_eq!(phy_info.maximum_linkrate, 12.0);
                    assert_eq!(phy_info.maximum_linkrate_hw, 12.0);
                    assert_eq!(phy_info.minimum_linkrate, 3.0);
                    assert_eq!(phy_info.minimum_linkrate_hw, 1.5);
                    assert_eq!(phy_info.negotiated_linkrate, 12.0);
                    assert_eq!(phy_info.phy_identifier, "8");
                    assert_eq!(phy_info.phy_reset_problem_count, 0);
                    assert_eq!(phy_info.running_disparity_error_count, 0);
                    assert_eq!(phy_info.target_port_protocols, ["none"]);
                }
                "phy-11:9" => {}
                "phy-11:10" => {}
                "phy-11:11" => {
                    assert_eq!(phy_info.sas_address, "0x500062b2047b51c4");
                    assert_eq!(phy_info.sas_port, "port-11:0");
                    assert_eq!(phy_info.device_type, "end device");
                    assert_eq!(phy_info.initiator_port_protocols.len(), 3);
                    assert_eq!(phy_info.invalid_dword_count, 0);
                    assert_eq!(phy_info.loss_of_dword_sync_count, 0);
                    assert_eq!(phy_info.maximum_linkrate, 12.0);
                    assert_eq!(phy_info.maximum_linkrate_hw, 12.0);
                    assert_eq!(phy_info.minimum_linkrate, 3.0);
                    assert_eq!(phy_info.minimum_linkrate_hw, 1.5);
                    assert_eq!(phy_info.negotiated_linkrate, 12.0);
                    assert_eq!(phy_info.phy_identifier, "11");
                    assert_eq!(phy_info.phy_reset_problem_count, 0);
                    assert_eq!(phy_info.running_disparity_error_count, 0);
                    assert_eq!(phy_info.target_port_protocols, ["none"]);
                }
                "phy-11:12" => {}
                "phy-11:13" => {
                    assert_eq!(phy_info.sas_address, "0x500062b2047b51c4");
                    assert_eq!(phy_info.sas_port, "port-11:1");
                    assert_eq!(phy_info.device_type, "end device");
                    assert_eq!(phy_info.initiator_port_protocols.len(), 3);
                    assert_eq!(phy_info.invalid_dword_count, 0);
                    assert_eq!(phy_info.loss_of_dword_sync_count, 0);
                    assert_eq!(phy_info.maximum_linkrate, 12.0);
                    assert_eq!(phy_info.maximum_linkrate_hw, 12.0);
                    assert_eq!(phy_info.minimum_linkrate, 3.0);
                    assert_eq!(phy_info.minimum_linkrate_hw, 1.5);
                    assert_eq!(phy_info.negotiated_linkrate, 6.0);
                    assert_eq!(phy_info.phy_identifier, "13");
                    assert_eq!(phy_info.phy_reset_problem_count, 0);
                    assert_eq!(phy_info.running_disparity_error_count, 0);
                    assert_eq!(phy_info.target_port_protocols, ["none"]);
                }
                "phy-11:14" => {}
                "phy-11:15" => {}
                _ => panic!("invalid sas phy name: {}", phy_name),
            }
        }
    }
}