counter_config/
config_lib_rust_config_lib_source.rs1use fidl::unpersist;
2use fidl_cf_sc_internal_counterconfig::Config as FidlConfig;
3use fuchsia_component_config::{Config as ComponentConfig, Error};
4use fuchsia_inspect::Node;
5use std::convert::TryInto;
6const EXPECTED_CHECKSUM: &[u8] = &[
7 0x8c, 0x34, 0x33, 0xab, 0x56, 0x0b, 0xac, 0xac, 0x14, 0x25, 0x4f, 0x40, 0xdf, 0x8e, 0x3d, 0x6a,
8 0x6d, 0x4d, 0xbb, 0x21, 0x16, 0xdf, 0x2b, 0x49, 0x49, 0xc0, 0x6a, 0x44, 0x08, 0x94, 0x27, 0xae,
9];
10#[derive(Debug)]
11pub struct Config {
12 pub routed_config: bool,
13 pub starting_value: 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 {
53 routed_config: fidl_config.routed_config,
54 starting_value: fidl_config.starting_value,
55 })
56 }
57 fn record_inspect(&self, inspector_node: &Node) {
58 inspector_node.record_bool("routed_config", self.routed_config);
59 inspector_node.record_uint("starting_value", self.starting_value as u64);
60 }
61}