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use crate::{Flag, FlagPermission, FlagValue, ValuePickedFrom};
use aconfig_protos::ProtoFlagPermission as ProtoPermission;
use aconfig_protos::ProtoFlagState as ProtoState;
use aconfig_protos::ProtoParsedFlag;
use aconfig_protos::ProtoParsedFlags;
use anyhow::Result;
use std::fs;
use std::path::Path;
// TODO(b/329875578): use container field directly instead of inferring.
fn infer_container(path: &Path) -> String {
let path_str = path.to_string_lossy();
path_str
.strip_prefix("/apex/")
.or_else(|| path_str.strip_prefix('/'))
.unwrap_or(&path_str)
.strip_suffix("/etc/aconfig_flags.pb")
.unwrap_or(&path_str)
.to_string()
}
fn convert_parsed_flag(path: &Path, flag: &ProtoParsedFlag) -> Flag {
let namespace = flag.namespace().to_string();
let package = flag.package().to_string();
let name = flag.name().to_string();
let value = match flag.state() {
ProtoState::ENABLED => FlagValue::Enabled,
ProtoState::DISABLED => FlagValue::Disabled,
};
let permission = match flag.permission() {
ProtoPermission::READ_ONLY => FlagPermission::ReadOnly,
ProtoPermission::READ_WRITE => FlagPermission::ReadWrite,
};
Flag {
namespace,
package,
name,
container: infer_container(path),
value,
staged_value: None,
permission,
value_picked_from: ValuePickedFrom::Default,
}
}
pub(crate) fn load() -> Result<Vec<Flag>> {
let mut result = Vec::new();
let paths = aconfig_device_paths::parsed_flags_proto_paths()?;
for path in paths {
let bytes = fs::read(path.clone())?;
let parsed_flags: ProtoParsedFlags = protobuf::Message::parse_from_bytes(&bytes)?;
for flag in parsed_flags.parsed_flag {
// TODO(b/334954748): enforce one-container-per-flag invariant.
result.push(convert_parsed_flag(&path, &flag));
}
}
Ok(result)
}
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