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Sane updater (#4658)

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* Make updater avoid downloading earlier versions.

* Disable if files can't be moved.
This commit is contained in:
Gav Wood 2017-02-24 01:06:35 +01:00 committed by Arkadiy Paronyan
parent 3f78c945d7
commit 76ade2fc2d
1 changed files with 10 additions and 7 deletions
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17
updater/src/updater.rs
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@ -79,6 +79,8 @@ struct UpdaterState {
installed: Option<ReleaseInfo>,
capability: CapState,
disabled: bool,
}
/// Service for checking for updates and determining whether we can achieve consensus.
@ -204,16 +206,16 @@ impl Updater {
}
fn fetch_done(&self, result: Result<PathBuf, fetch::Error>) {
(|| -> Result<(), String> {
(|| -> Result<(), (String, bool)> {
let auto = {
let mut s = self.state.lock();
let fetched = s.fetching.take().unwrap();
let b = result.map_err(|e| format!("Unable to fetch update ({}): {:?}", fetched.version, e))?;
let b = result.map_err(|e| (format!("Unable to fetch update ({}): {:?}", fetched.version, e), false))?;
info!(target: "updater", "Fetched latest version ({}) OK to {}", fetched.version, b.display());
let dest = self.updates_path(&Self::update_file_name(&fetched.version));
fs::create_dir_all(dest.parent().expect("at least one thing pushed; qed")).map_err(|e| format!("Unable to create updates path: {:?}", e))?;
fs::copy(&b, &dest).map_err(|e| format!("Unable to copy update: {:?}", e))?;
restrict_permissions_owner(&dest, false, true).map_err(|e| format!("Unable to update permissions: {}", e))?;
fs::create_dir_all(dest.parent().expect("at least one thing pushed; qed")).map_err(|e| (format!("Unable to create updates path: {:?}", e), true))?;
fs::copy(&b, &dest).map_err(|e| (format!("Unable to copy update: {:?}", e), true))?;
restrict_permissions_owner(&dest, false, true).map_err(|e| (format!("Unable to update permissions: {}", e), true))?;
info!(target: "updater", "Installed updated binary to {}", dest.display());
let auto = match self.update_policy.filter {
UpdateFilter::All => true,
@ -228,7 +230,7 @@ impl Updater {
self.execute_upgrade();
}
Ok(())
})().unwrap_or_else(|e| warn!("{}", e));
})().unwrap_or_else(|(e, fatal)| { self.state.lock().disabled = fatal; warn!("{}", e); });
}
fn poll(&self) {
@ -266,9 +268,10 @@ impl Updater {
}
);
let mut s = self.state.lock();
let running_later = latest.track.version.version < self.version_info().version;
let running_latest = latest.track.version.hash == self.version_info().hash;
let already_have_latest = s.installed.as_ref().or(s.ready.as_ref()).map_or(false, |t| *t == latest.track);
if self.update_policy.enable_downloading && !running_latest && !already_have_latest {
if self.update_policy.enable_downloading && !running_later && !running_latest && !already_have_latest {
if let Some(b) = latest.track.binary {
if s.fetching.is_none() {
info!(target: "updater", "Attempting to get parity binary {}", b);