config_lib/
config_lib_rust_config_lib_source.rs

1use fidl::unpersist;
2use fidl_cf_sc_internal_configlib::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    0x1e, 0x2c, 0x8c, 0x11, 0x78, 0x21, 0x1b, 0xf4, 0x53, 0xba, 0x24, 0x7c, 0x85, 0xfa, 0x38, 0x87,
8    0xf2, 0xcc, 0x60, 0x5d, 0xdb, 0xba, 0x3d, 0xe6, 0x07, 0x44, 0xa1, 0x0e, 0x17, 0xa6, 0x12, 0x97,
9];
10#[derive(Debug)]
11pub struct Config {
12    pub echo_bool: bool,
13    pub echo_num: u64,
14    pub echo_string: String,
15    pub echo_string_vector: Vec<String>,
16}
17impl Config {
18    #[doc = r" Take the config startup handle and parse its contents."]
19    #[doc = r""]
20    #[doc = r" # Panics"]
21    #[doc = r""]
22    #[doc = r" If the config startup handle was already taken or if it is not valid."]
23    pub fn take_from_startup_handle() -> Self {
24        <Self as ComponentConfig>::take_from_startup_handle()
25    }
26    #[doc = r" Parse `Self` from `vmo`."]
27    pub fn from_vmo(vmo: &zx::Vmo) -> Result<Self, Error> {
28        <Self as ComponentConfig>::from_vmo(vmo)
29    }
30    #[doc = r" Parse `Self` from `bytes`."]
31    pub fn from_bytes(bytes: &[u8]) -> Result<Self, Error> {
32        <Self as ComponentConfig>::from_bytes(bytes)
33    }
34    pub fn record_inspect(&self, inspector_node: &Node) {
35        <Self as ComponentConfig>::record_inspect(self, inspector_node)
36    }
37}
38impl ComponentConfig for Config {
39    #[doc = r" Parse `Self` from `bytes`."]
40    fn from_bytes(bytes: &[u8]) -> Result<Self, Error> {
41        let (checksum_len_bytes, bytes) = bytes.split_at_checked(2).ok_or(Error::TooFewBytes)?;
42        let checksum_len_bytes: [u8; 2] =
43            checksum_len_bytes.try_into().expect("previous call guaranteed 2 element slice");
44        let checksum_length = u16::from_le_bytes(checksum_len_bytes) as usize;
45        let (observed_checksum, bytes) =
46            bytes.split_at_checked(checksum_length).ok_or(Error::TooFewBytes)?;
47        if observed_checksum != EXPECTED_CHECKSUM {
48            return Err(Error::ChecksumMismatch {
49                expected_checksum: EXPECTED_CHECKSUM.to_vec(),
50                observed_checksum: observed_checksum.to_vec(),
51            });
52        }
53        let fidl_config: FidlConfig = unpersist(bytes).map_err(Error::Unpersist)?;
54        Ok(Self {
55            echo_bool: fidl_config.echo_bool,
56            echo_num: fidl_config.echo_num,
57            echo_string: fidl_config.echo_string,
58            echo_string_vector: fidl_config.echo_string_vector,
59        })
60    }
61    fn record_inspect(&self, inspector_node: &Node) {
62        inspector_node.record_bool("echo_bool", self.echo_bool);
63        inspector_node.record_uint("echo_num", self.echo_num);
64        inspector_node.record_string("echo_string", &self.echo_string);
65        let arr =
66            inspector_node.create_string_array("echo_string_vector", self.echo_string_vector.len());
67        for i in 0..self.echo_string_vector.len() {
68            arr.set(i, &self.echo_string_vector[i]);
69        }
70        inspector_node.record(arr);
71    }
72}
config_lib/config_lib_rust_config_lib_source.rs

config_lib/
config_lib_rust_config_lib_source.rs
