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::{ArrayProperty, Node};
5use std::convert::TryInto;
6const EXPECTED_CHECKSUM: &[u8] = &[
7    0x8c, 0xdf, 0x15, 0x64, 0x4f, 0xed, 0x6e, 0x6b, 0xb5, 0x71, 0xe8, 0xba, 0xe6, 0xc8, 0xdd, 0x87,
8    0x9f, 0xfc, 0x21, 0xdc, 0xc7, 0xf2, 0x92, 0x12, 0x02, 0x47, 0x61, 0x5d, 0xea, 0x7a, 0x74, 0x04,
9];
10#[derive(Debug)]
11pub struct Config {
12    pub concurrent_blob_fetches: u16,
13    pub concurrent_package_resolves: u16,
14    pub manifest_public_keys: Vec<String>,
15}
16impl Config {
17    #[doc = r" Take the config startup handle and parse its contents."]
18    #[doc = r""]
19    #[doc = r" # Panics"]
20    #[doc = r""]
21    #[doc = r" If the config startup handle was already taken or if it is not valid."]
22    pub fn take_from_startup_handle() -> Self {
23        <Self as ComponentConfig>::take_from_startup_handle()
24    }
25    #[doc = r" Parse `Self` from `vmo`."]
26    pub fn from_vmo(vmo: &zx::Vmo) -> Result<Self, Error> {
27        <Self as ComponentConfig>::from_vmo(vmo)
28    }
29    #[doc = r" Parse `Self` from `bytes`."]
30    pub fn from_bytes(bytes: &[u8]) -> Result<Self, Error> {
31        <Self as ComponentConfig>::from_bytes(bytes)
32    }
33    pub fn record_inspect(&self, inspector_node: &Node) {
34        <Self as ComponentConfig>::record_inspect(self, inspector_node)
35    }
36}
37impl ComponentConfig for Config {
38    #[doc = r" Parse `Self` from `bytes`."]
39    fn from_bytes(bytes: &[u8]) -> Result<Self, Error> {
40        let (checksum_len_bytes, bytes) = bytes.split_at_checked(2).ok_or(Error::TooFewBytes)?;
41        let checksum_len_bytes: [u8; 2] =
42            checksum_len_bytes.try_into().expect("previous call guaranteed 2 element slice");
43        let checksum_length = u16::from_le_bytes(checksum_len_bytes) as usize;
44        let (observed_checksum, bytes) =
45            bytes.split_at_checked(checksum_length).ok_or(Error::TooFewBytes)?;
46        if observed_checksum != EXPECTED_CHECKSUM {
47            return Err(Error::ChecksumMismatch {
48                expected_checksum: EXPECTED_CHECKSUM.to_vec(),
49                observed_checksum: observed_checksum.to_vec(),
50            });
51        }
52        let fidl_config: FidlConfig = unpersist(bytes).map_err(Error::Unpersist)?;
53        Ok(Self {
54            concurrent_blob_fetches: fidl_config.concurrent_blob_fetches,
55            concurrent_package_resolves: fidl_config.concurrent_package_resolves,
56            manifest_public_keys: fidl_config.manifest_public_keys,
57        })
58    }
59    fn record_inspect(&self, inspector_node: &Node) {
60        inspector_node.record_uint("concurrent_blob_fetches", self.concurrent_blob_fetches as u64);
61        inspector_node
62            .record_uint("concurrent_package_resolves", self.concurrent_package_resolves as u64);
63        let arr = inspector_node
64            .create_string_array("manifest_public_keys", self.manifest_public_keys.len());
65        for i in 0..self.manifest_public_keys.len() {
66            arr.set(i, &self.manifest_public_keys[i]);
67        }
68        inspector_node.record(arr);
69    }
70}
system_updater_config/config_lib_rust_config_lib_source.rs

system_updater_config/
config_lib_rust_config_lib_source.rs
