ns3_config/
config_lib_rust_config_lib_source.rs

1use fidl::unpersist;
2use fidl_cf_sc_internal_ns3config::Config as FidlConfig;
3use fuchsia_component_config::{Config as ComponentConfig, Error};
4use fuchsia_inspect::Node;
5use std::convert::TryInto;
6const EXPECTED_CHECKSUM: &[u8] = &[
7    0xaa, 0x8a, 0x2e, 0x7b, 0xd2, 0x1d, 0x06, 0x66, 0x21, 0x34, 0xfa, 0xbf, 0x58, 0x65, 0xdc, 0xd4,
8    0x25, 0xaa, 0x71, 0x85, 0xb8, 0x0f, 0x69, 0x9e, 0x5a, 0x77, 0xb5, 0xa6, 0xc3, 0xc1, 0xcd, 0xaa,
9];
10const EXPECTED_CHECKSUM_LENGTH: [u8; 2] = (EXPECTED_CHECKSUM.len() as u16).to_le_bytes();
11#[derive(Debug)]
12pub struct Config {
13    pub debug_logs: bool,
14    pub num_threads: u8,
15    pub opaque_iids: bool,
16    pub sampled_stats_enabled: bool,
17    pub suspend_enabled: bool,
18}
19impl Config {
20    #[doc = r" Take the config startup handle and parse its contents."]
21    #[doc = r""]
22    #[doc = r" # Panics"]
23    #[doc = r""]
24    #[doc = r" If the config startup handle was already taken or if it is not valid."]
25    pub fn take_from_startup_handle() -> Self {
26        <Self as ComponentConfig>::take_from_startup_handle()
27    }
28    #[doc = r" Parse `Self` from `vmo`."]
29    pub fn from_vmo(vmo: &zx::Vmo) -> Result<Self, Error> {
30        <Self as ComponentConfig>::from_vmo(vmo)
31    }
32    #[doc = r" Parse `Self` from `bytes`."]
33    pub fn from_bytes(bytes: &[u8]) -> Result<Self, Error> {
34        <Self as ComponentConfig>::from_bytes(bytes)
35    }
36    pub fn record_inspect(&self, inspector_node: &Node) {
37        <Self as ComponentConfig>::record_inspect(self, inspector_node)
38    }
39}
40impl ComponentConfig for Config {
41    #[doc = r" Parse `Self` from `bytes`."]
42    fn from_bytes(bytes: &[u8]) -> Result<Self, Error> {
43        let (checksum_len_bytes, bytes) = bytes.split_at_checked(2).ok_or(Error::TooFewBytes)?;
44        let checksum_len_bytes: [u8; 2] =
45            checksum_len_bytes.try_into().expect("previous call guaranteed 2 element slice");
46        let checksum_length = u16::from_le_bytes(checksum_len_bytes) as usize;
47        let (observed_checksum, bytes) =
48            bytes.split_at_checked(checksum_length).ok_or(Error::TooFewBytes)?;
49        if observed_checksum != EXPECTED_CHECKSUM {
50            return Err(Error::ChecksumMismatch {
51                expected_checksum: EXPECTED_CHECKSUM.to_vec(),
52                observed_checksum: observed_checksum.to_vec(),
53            });
54        }
55        let fidl_config: FidlConfig = unpersist(bytes).map_err(Error::Unpersist)?;
56        Ok(Self {
57            debug_logs: fidl_config.debug_logs,
58            num_threads: fidl_config.num_threads,
59            opaque_iids: fidl_config.opaque_iids,
60            sampled_stats_enabled: fidl_config.sampled_stats_enabled,
61            suspend_enabled: fidl_config.suspend_enabled,
62        })
63    }
64    fn to_bytes(&self) -> Result<Vec<u8>, Error> {
65        let fidl_config = FidlConfig {
66            debug_logs: self.debug_logs.clone(),
67            num_threads: self.num_threads.clone(),
68            opaque_iids: self.opaque_iids.clone(),
69            sampled_stats_enabled: self.sampled_stats_enabled.clone(),
70            suspend_enabled: self.suspend_enabled.clone(),
71        };
72        let mut fidl_bytes = fidl::persist(&fidl_config).map_err(Error::Persist)?;
73        let mut bytes = Vec::with_capacity(
74            EXPECTED_CHECKSUM_LENGTH.len() + EXPECTED_CHECKSUM.len() + fidl_bytes.len(),
75        );
76        bytes.extend_from_slice(&EXPECTED_CHECKSUM_LENGTH);
77        bytes.extend_from_slice(EXPECTED_CHECKSUM);
78        bytes.append(&mut fidl_bytes);
79        Ok(bytes)
80    }
81    fn record_inspect(&self, inspector_node: &Node) {
82        inspector_node.record_bool("debug_logs", self.debug_logs);
83        inspector_node.record_uint("num_threads", self.num_threads as u64);
84        inspector_node.record_bool("opaque_iids", self.opaque_iids);
85        inspector_node.record_bool("sampled_stats_enabled", self.sampled_stats_enabled);
86        inspector_node.record_bool("suspend_enabled", self.suspend_enabled);
87    }
88}
ns3_config/config_lib_rust_config_lib_source.rs

ns3_config/
config_lib_rust_config_lib_source.rs
