cache_manager_config_lib/
cache_manager_config_lib_rust_config_lib_source.rs

1use fidl::unpersist;
2use fidl_cf_sc_internal_cachemanagerconfiglib::Config as FidlConfig;
3use fuchsia_component_config::{Config as ComponentConfig, Error};
4use fuchsia_inspect::Node;
5use std::convert::TryInto;
6const EXPECTED_CHECKSUM: &[u8] = &[
7    0xee, 0xc7, 0xc3, 0x22, 0xf2, 0xb0, 0x79, 0x6d, 0x7d, 0x07, 0x77, 0x52, 0x8f, 0x01, 0x54, 0xa2,
8    0xaa, 0x69, 0xe1, 0xa9, 0xf1, 0xb7, 0x80, 0xc0, 0xfe, 0x0a, 0xca, 0x3e, 0xd8, 0xfc, 0x25, 0xd8,
9];
10#[derive(Debug)]
11pub struct Config {
12    pub cache_clearing_threshold: u64,
13    pub storage_checking_frequency: u64,
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            cache_clearing_threshold: fidl_config.cache_clearing_threshold,
54            storage_checking_frequency: fidl_config.storage_checking_frequency,
55        })
56    }
57    fn record_inspect(&self, inspector_node: &Node) {
58        inspector_node.record_uint("cache_clearing_threshold", self.cache_clearing_threshold);
59        inspector_node.record_uint("storage_checking_frequency", self.storage_checking_frequency);
60    }
61}
cache_manager_config_lib/cache_manager_config_lib_rust_config_lib_source.rs

cache_manager_config_lib/
cache_manager_config_lib_rust_config_lib_source.rs
