persistence_build_config/
persistence-build-config_rust_config_lib_source.rs

1use fidl::unpersist;
2use fidl_cf_sc_internal_persistencebuildconfig::Config as FidlConfig;
3use fuchsia_component_config::{Config as ComponentConfig, Error};
4use fuchsia_inspect::Node;
5use std::convert::TryInto;
6const EXPECTED_CHECKSUM: &[u8] = &[
7    0xb8, 0x33, 0xc9, 0x81, 0xeb, 0x51, 0xcf, 0x47, 0x27, 0x50, 0xb2, 0x67, 0x73, 0x9b, 0xd1, 0x2b,
8    0x2b, 0xe4, 0x81, 0xdb, 0xf0, 0x18, 0x35, 0x14, 0x2f, 0x9b, 0x93, 0xb9, 0xff, 0xdc, 0xd1, 0x9f,
9];
10const EXPECTED_CHECKSUM_LENGTH: [u8; 2] = (EXPECTED_CHECKSUM.len() as u16).to_le_bytes();
11#[derive(Debug)]
12pub struct Config {
13    pub enable_shutdown_snapshot: bool,
14    pub low_battery_threshold_percent: u64,
15    pub persistence_period_seconds: i64,
16    pub skip_update_check: bool,
17    pub stop_on_idle_timeout_millis: i64,
18}
19impl Config {
20    #[doc = r" Take the config startup handle and parse its contents."]
21    #[doc = r""]
22    #[doc = r" # Panics"]
23    #[doc = r""]
24    #[doc = r" If the config startup handle was already taken or if it is not valid."]
25    pub fn take_from_startup_handle() -> Self {
26        <Self as ComponentConfig>::take_from_startup_handle()
27    }
28    #[doc = r" Parse `Self` from `vmo`."]
29    pub fn from_vmo(vmo: &zx::Vmo) -> Result<Self, Error> {
30        <Self as ComponentConfig>::from_vmo(vmo)
31    }
32    #[doc = r" Parse `Self` from `bytes`."]
33    pub fn from_bytes(bytes: &[u8]) -> Result<Self, Error> {
34        <Self as ComponentConfig>::from_bytes(bytes)
35    }
36    pub fn record_inspect(&self, inspector_node: &Node) {
37        <Self as ComponentConfig>::record_inspect(self, inspector_node)
38    }
39}
40impl ComponentConfig for Config {
41    #[doc = r" Parse `Self` from `bytes`."]
42    fn from_bytes(bytes: &[u8]) -> Result<Self, Error> {
43        let (checksum_len_bytes, bytes) = bytes.split_at_checked(2).ok_or(Error::TooFewBytes)?;
44        let checksum_len_bytes: [u8; 2] =
45            checksum_len_bytes.try_into().expect("previous call guaranteed 2 element slice");
46        let checksum_length = u16::from_le_bytes(checksum_len_bytes) as usize;
47        let (observed_checksum, bytes) =
48            bytes.split_at_checked(checksum_length).ok_or(Error::TooFewBytes)?;
49        if observed_checksum != EXPECTED_CHECKSUM {
50            return Err(Error::ChecksumMismatch {
51                expected_checksum: EXPECTED_CHECKSUM.to_vec(),
52                observed_checksum: observed_checksum.to_vec(),
53            });
54        }
55        let fidl_config: FidlConfig = unpersist(bytes).map_err(Error::Unpersist)?;
56        Ok(Self {
57            enable_shutdown_snapshot: fidl_config.enable_shutdown_snapshot,
58            low_battery_threshold_percent: fidl_config.low_battery_threshold_percent,
59            persistence_period_seconds: fidl_config.persistence_period_seconds,
60            skip_update_check: fidl_config.skip_update_check,
61            stop_on_idle_timeout_millis: fidl_config.stop_on_idle_timeout_millis,
62        })
63    }
64    fn to_bytes(&self) -> Result<Vec<u8>, Error> {
65        let fidl_config = FidlConfig {
66            enable_shutdown_snapshot: self.enable_shutdown_snapshot.clone(),
67            low_battery_threshold_percent: self.low_battery_threshold_percent.clone(),
68            persistence_period_seconds: self.persistence_period_seconds.clone(),
69            skip_update_check: self.skip_update_check.clone(),
70            stop_on_idle_timeout_millis: self.stop_on_idle_timeout_millis.clone(),
71        };
72        let mut fidl_bytes = fidl::persist(&fidl_config).map_err(Error::Persist)?;
73        let mut bytes = Vec::with_capacity(
74            EXPECTED_CHECKSUM_LENGTH.len() + EXPECTED_CHECKSUM.len() + fidl_bytes.len(),
75        );
76        bytes.extend_from_slice(&EXPECTED_CHECKSUM_LENGTH);
77        bytes.extend_from_slice(EXPECTED_CHECKSUM);
78        bytes.append(&mut fidl_bytes);
79        Ok(bytes)
80    }
81    fn record_inspect(&self, inspector_node: &Node) {
82        inspector_node.record_bool("enable_shutdown_snapshot", self.enable_shutdown_snapshot);
83        inspector_node
84            .record_uint("low_battery_threshold_percent", self.low_battery_threshold_percent);
85        inspector_node.record_int("persistence_period_seconds", self.persistence_period_seconds);
86        inspector_node.record_bool("skip_update_check", self.skip_update_check);
87        inspector_node.record_int("stop_on_idle_timeout_millis", self.stop_on_idle_timeout_millis);
88    }
89}
persistence_build_config/persistence-build-config_rust_config_lib_source.rs

persistence_build_config/
persistence-build-config_rust_config_lib_source.rs
