1use fidl::unpersist;
2use fidl_cf_sc_internal_timekeeperconfig::Config as FidlConfig;
3use fuchsia_inspect::Node;
4use fuchsia_runtime::{take_startup_handle, HandleInfo, HandleType};
5#[derive(Debug)]
6pub struct Config {
7 pub back_off_time_between_pull_samples_sec: i64,
8 pub disable_delays: bool,
9 pub early_exit: bool,
10 pub first_sampling_delay_sec: i64,
11 pub has_always_on_counter: bool,
12 pub has_real_time_clock: bool,
13 pub initial_frequency_ppm: u32,
14 pub max_frequency_error_ppm: u32,
15 pub monitor_time_source_url: String,
16 pub monitor_uses_pull: bool,
17 pub oscillator_error_std_dev_ppm: u32,
18 pub power_topology_integration_enabled: bool,
19 pub primary_time_source_url: String,
20 pub primary_uses_pull: bool,
21 pub serve_fuchsia_time_alarms: bool,
22 pub serve_fuchsia_time_external_adjust: bool,
23 pub serve_test_protocols: bool,
24 pub utc_start_at_startup: bool,
25 pub utc_start_at_startup_when_invalid_rtc: bool,
26}
27impl Config {
28 pub fn take_from_startup_handle() -> Self {
29 let config_vmo: zx::Vmo =
30 take_startup_handle(HandleInfo::new(HandleType::ComponentConfigVmo, 0))
31 .expect("Config VMO handle must be provided and cannot already have been taken.")
32 .into();
33 let config_size =
34 config_vmo.get_content_size().expect("must be able to read config vmo content size");
35 assert_ne!(config_size, 0, "config vmo must be non-empty");
36 let config_bytes =
37 config_vmo.read_to_vec(0, config_size).expect("must be able to read config vmo");
38 let checksum_length = u16::from_le_bytes([config_bytes[0], config_bytes[1]]) as usize;
39 let fidl_start = 2 + checksum_length;
40 let observed_checksum = &config_bytes[2..fidl_start];
41 let expected_checksum = vec![
42 0x57, 0xa4, 0xe0, 0xd6, 0xc8, 0x1e, 0xf3, 0xbc, 0x17, 0x95, 0x7d, 0x16, 0x09, 0xea,
43 0xd1, 0x4c, 0xc1, 0xf3, 0x35, 0xf6, 0x1e, 0x82, 0xf7, 0x9c, 0xcc, 0x85, 0x61, 0x0d,
44 0x64, 0x33, 0x38, 0xf4,
45 ];
46 assert_eq!(
47 observed_checksum, expected_checksum,
48 "checksum from config VMO does not match expected checksum"
49 );
50 let fidl_config: FidlConfig = unpersist(&config_bytes[fidl_start..])
51 .expect("must be able to parse bytes as config FIDL");
52 Self {
53 back_off_time_between_pull_samples_sec: fidl_config
54 .back_off_time_between_pull_samples_sec,
55 disable_delays: fidl_config.disable_delays,
56 early_exit: fidl_config.early_exit,
57 first_sampling_delay_sec: fidl_config.first_sampling_delay_sec,
58 has_always_on_counter: fidl_config.has_always_on_counter,
59 has_real_time_clock: fidl_config.has_real_time_clock,
60 initial_frequency_ppm: fidl_config.initial_frequency_ppm,
61 max_frequency_error_ppm: fidl_config.max_frequency_error_ppm,
62 monitor_time_source_url: fidl_config.monitor_time_source_url,
63 monitor_uses_pull: fidl_config.monitor_uses_pull,
64 oscillator_error_std_dev_ppm: fidl_config.oscillator_error_std_dev_ppm,
65 power_topology_integration_enabled: fidl_config.power_topology_integration_enabled,
66 primary_time_source_url: fidl_config.primary_time_source_url,
67 primary_uses_pull: fidl_config.primary_uses_pull,
68 serve_fuchsia_time_alarms: fidl_config.serve_fuchsia_time_alarms,
69 serve_fuchsia_time_external_adjust: fidl_config.serve_fuchsia_time_external_adjust,
70 serve_test_protocols: fidl_config.serve_test_protocols,
71 utc_start_at_startup: fidl_config.utc_start_at_startup,
72 utc_start_at_startup_when_invalid_rtc: fidl_config
73 .utc_start_at_startup_when_invalid_rtc,
74 }
75 }
76 pub fn record_inspect(&self, inspector_node: &Node) {
77 inspector_node.record_int(
78 "back_off_time_between_pull_samples_sec",
79 self.back_off_time_between_pull_samples_sec,
80 );
81 inspector_node.record_bool("disable_delays", self.disable_delays);
82 inspector_node.record_bool("early_exit", self.early_exit);
83 inspector_node.record_int("first_sampling_delay_sec", self.first_sampling_delay_sec);
84 inspector_node.record_bool("has_always_on_counter", self.has_always_on_counter);
85 inspector_node.record_bool("has_real_time_clock", self.has_real_time_clock);
86 inspector_node.record_uint("initial_frequency_ppm", self.initial_frequency_ppm as u64);
87 inspector_node.record_uint("max_frequency_error_ppm", self.max_frequency_error_ppm as u64);
88 inspector_node.record_string("monitor_time_source_url", &self.monitor_time_source_url);
89 inspector_node.record_bool("monitor_uses_pull", self.monitor_uses_pull);
90 inspector_node
91 .record_uint("oscillator_error_std_dev_ppm", self.oscillator_error_std_dev_ppm as u64);
92 inspector_node.record_bool(
93 "power_topology_integration_enabled",
94 self.power_topology_integration_enabled,
95 );
96 inspector_node.record_string("primary_time_source_url", &self.primary_time_source_url);
97 inspector_node.record_bool("primary_uses_pull", self.primary_uses_pull);
98 inspector_node.record_bool("serve_fuchsia_time_alarms", self.serve_fuchsia_time_alarms);
99 inspector_node.record_bool(
100 "serve_fuchsia_time_external_adjust",
101 self.serve_fuchsia_time_external_adjust,
102 );
103 inspector_node.record_bool("serve_test_protocols", self.serve_test_protocols);
104 inspector_node.record_bool("utc_start_at_startup", self.utc_start_at_startup);
105 inspector_node.record_bool(
106 "utc_start_at_startup_when_invalid_rtc",
107 self.utc_start_at_startup_when_invalid_rtc,
108 );
109 }
110}