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use std::io;
use std::io::Read;
use std::fs;
use std::path::{Path, PathBuf};
use page::{LocalPageEndpoint, PageCache};
use endpoint::{Endpoints, EndpointInfo};
use apps::manifest::{MANIFEST_FILENAME, deserialize_manifest};
struct LocalDapp {
id: String,
path: PathBuf,
info: EndpointInfo,
}
fn read_manifest(name: &str, mut path: PathBuf) -> EndpointInfo {
path.push(MANIFEST_FILENAME);
fs::File::open(path.clone())
.map_err(|e| format!("{:?}", e))
.and_then(|mut f| {
let mut s = String::new();
f.read_to_string(&mut s).map_err(|e| format!("{:?}", e))?;
deserialize_manifest(s)
})
.map(Into::into)
.unwrap_or_else(|e| {
warn!(target: "dapps", "Cannot read manifest file at: {:?}. Error: {:?}", path, e);
EndpointInfo {
name: name.into(),
description: name.into(),
version: "0.0.0".into(),
author: "?".into(),
icon_url: "icon.png".into(),
}
})
}
pub fn local_endpoint<P: AsRef<Path>>(path: P, signer_address: Option<(String, u16)>) -> Option<(String, Box<LocalPageEndpoint>)> {
let path = path.as_ref().to_owned();
path.canonicalize().ok().and_then(|path| {
let name = path.file_name().and_then(|name| name.to_str());
name.map(|name| {
let dapp = local_dapp(name.into(), path.clone());
(dapp.id, Box::new(LocalPageEndpoint::new(
dapp.path, dapp.info, PageCache::Disabled, signer_address.clone())
))
})
})
}
fn local_dapp(name: String, path: PathBuf) -> LocalDapp {
let info = read_manifest(&name, path.clone());
LocalDapp {
id: name,
path: path,
info: info,
}
}
pub fn local_endpoints<P: AsRef<Path>>(dapps_path: P, signer_address: Option<(String, u16)>) -> Endpoints {
let mut pages = Endpoints::new();
for dapp in local_dapps(dapps_path.as_ref()) {
pages.insert(
dapp.id,
Box::new(LocalPageEndpoint::new(dapp.path, dapp.info, PageCache::Disabled, signer_address.clone()))
);
}
pages
}
fn local_dapps(dapps_path: &Path) -> Vec<LocalDapp> {
let files = fs::read_dir(dapps_path);
if let Err(e) = files {
warn!(target: "dapps", "Unable to load local dapps from: {}. Reason: {:?}", dapps_path.display(), e);
return vec![];
}
let files = files.expect("Check is done earlier");
files.map(|dir| {
let entry = dir?;
let file_type = entry.file_type()?;
if file_type.is_file() {
return Err(io::Error::new(io::ErrorKind::NotFound, "Not a file"));
}
entry.file_name().into_string()
.map(|name| (name, entry.path()))
.map_err(|e| {
info!(target: "dapps", "Unable to load dapp: {:?}. Reason: {:?}", entry.path(), e);
io::Error::new(io::ErrorKind::NotFound, "Invalid name")
})
})
.filter_map(|m| {
if let Err(ref e) = m {
debug!(target: "dapps", "Ignoring local dapp: {:?}", e);
}
m.ok()
})
.map(|(name, path)| local_dapp(name, path))
.collect()
}