system_updater_config/
config_lib_rust_config_lib_source.rs

1use fidl::unpersist;
2use fidl_cf_sc_internal_systemupdaterconfig::Config as FidlConfig;
3use fuchsia_component_config::{Config as ComponentConfig, Error};
4use fuchsia_inspect::Node;
5use std::convert::TryInto;
6const EXPECTED_CHECKSUM: &[u8] = &[
7    0x09, 0x73, 0xec, 0xa2, 0x72, 0x63, 0x26, 0x2a, 0x38, 0x0b, 0xbd, 0x91, 0x87, 0xb8, 0xe6, 0x6e,
8    0xf2, 0xba, 0xb3, 0x0f, 0xd7, 0x9c, 0xfc, 0x94, 0x8a, 0x2b, 0x88, 0x6d, 0x3a, 0xf2, 0xf7, 0xe6,
9];
10#[derive(Debug)]
11pub struct Config {
12    pub concurrent_package_resolves: u16,
13    pub enable_attempt_v2: bool,
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 {
53            concurrent_package_resolves: fidl_config.concurrent_package_resolves,
54            enable_attempt_v2: fidl_config.enable_attempt_v2,
55        })
56    }
57    fn record_inspect(&self, inspector_node: &Node) {
58        inspector_node
59            .record_uint("concurrent_package_resolves", self.concurrent_package_resolves as u64);
60        inspector_node.record_bool("enable_attempt_v2", self.enable_attempt_v2);
61    }
62}
system_updater_config/config_lib_rust_config_lib_source.rs

system_updater_config/
config_lib_rust_config_lib_source.rs
