broker_config/
broker_config_rust_config_lib_source.rs

1use fidl::unpersist;
2use fidl_cf_sc_internal_brokerconfig::Config as FidlConfig;
3use fuchsia_component_config::{Config as ComponentConfig, Error};
4use fuchsia_inspect::Node;
5use std::convert::TryInto;
6const EXPECTED_CHECKSUM: &[u8] = &[
7    0xcb, 0xfb, 0xd1, 0x6d, 0x5e, 0x53, 0x1a, 0x99, 0xcb, 0x4d, 0xa3, 0xdf, 0xc6, 0xc8, 0xe8, 0x76,
8    0xea, 0x56, 0xe9, 0x85, 0x60, 0x9c, 0x73, 0xce, 0x47, 0xbc, 0x15, 0xdf, 0xbf, 0x04, 0xdf, 0x22,
9];
10const EXPECTED_CHECKSUM_LENGTH: [u8; 2] = (EXPECTED_CHECKSUM.len() as u16).to_le_bytes();
11#[derive(Debug)]
12pub struct Config {
13    pub set_level_timeout_seconds: u32,
14}
15impl Config {
16    #[doc = r" Take the config startup handle and parse its contents."]
17    #[doc = r""]
18    #[doc = r" # Panics"]
19    #[doc = r""]
20    #[doc = r" If the config startup handle was already taken or if it is not valid."]
21    pub fn take_from_startup_handle() -> Self {
22        <Self as ComponentConfig>::take_from_startup_handle()
23    }
24    #[doc = r" Parse `Self` from `vmo`."]
25    pub fn from_vmo(vmo: &zx::Vmo) -> Result<Self, Error> {
26        <Self as ComponentConfig>::from_vmo(vmo)
27    }
28    #[doc = r" Parse `Self` from `bytes`."]
29    pub fn from_bytes(bytes: &[u8]) -> Result<Self, Error> {
30        <Self as ComponentConfig>::from_bytes(bytes)
31    }
32    pub fn record_inspect(&self, inspector_node: &Node) {
33        <Self as ComponentConfig>::record_inspect(self, inspector_node)
34    }
35}
36impl ComponentConfig for Config {
37    #[doc = r" Parse `Self` from `bytes`."]
38    fn from_bytes(bytes: &[u8]) -> Result<Self, Error> {
39        let (checksum_len_bytes, bytes) = bytes.split_at_checked(2).ok_or(Error::TooFewBytes)?;
40        let checksum_len_bytes: [u8; 2] =
41            checksum_len_bytes.try_into().expect("previous call guaranteed 2 element slice");
42        let checksum_length = u16::from_le_bytes(checksum_len_bytes) as usize;
43        let (observed_checksum, bytes) =
44            bytes.split_at_checked(checksum_length).ok_or(Error::TooFewBytes)?;
45        if observed_checksum != EXPECTED_CHECKSUM {
46            return Err(Error::ChecksumMismatch {
47                expected_checksum: EXPECTED_CHECKSUM.to_vec(),
48                observed_checksum: observed_checksum.to_vec(),
49            });
50        }
51        let fidl_config: FidlConfig = unpersist(bytes).map_err(Error::Unpersist)?;
52        Ok(Self { set_level_timeout_seconds: fidl_config.set_level_timeout_seconds })
53    }
54    fn to_bytes(&self) -> Result<Vec<u8>, Error> {
55        let fidl_config =
56            FidlConfig { set_level_timeout_seconds: self.set_level_timeout_seconds.clone() };
57        let mut fidl_bytes = fidl::persist(&fidl_config).map_err(Error::Persist)?;
58        let mut bytes = Vec::with_capacity(
59            EXPECTED_CHECKSUM_LENGTH.len() + EXPECTED_CHECKSUM.len() + fidl_bytes.len(),
60        );
61        bytes.extend_from_slice(&EXPECTED_CHECKSUM_LENGTH);
62        bytes.extend_from_slice(EXPECTED_CHECKSUM);
63        bytes.append(&mut fidl_bytes);
64        Ok(bytes)
65    }
66    fn record_inspect(&self, inspector_node: &Node) {
67        inspector_node
68            .record_uint("set_level_timeout_seconds", self.set_level_timeout_seconds as u64);
69    }
70}
broker_config/broker_config_rust_config_lib_source.rs

broker_config/
broker_config_rust_config_lib_source.rs
