mirror of https://github.com/dswd/zvault
87 lines
2.8 KiB
Rust
87 lines
2.8 KiB
Rust
use super::{Repository, RepositoryError};
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use ::bundle::BundleId;
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use ::util::Hash;
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quick_error!{
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#[derive(Debug)]
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pub enum RepositoryIntegrityError {
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MissingChunk(hash: Hash) {
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description("Missing chunk")
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display("Missing chunk: {}", hash)
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}
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MissingBundleId(id: u32) {
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description("Missing bundle")
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display("Missing bundle: {}", id)
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}
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MissingBundle(id: BundleId) {
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description("Missing bundle")
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display("Missing bundle: {}", id)
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}
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NoSuchChunk(bundle: BundleId, chunk: u32) {
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description("No such chunk")
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display("Bundle {} does not conain the chunk {}", bundle, chunk)
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}
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InvalidNextBundleId {
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description("Invalid next bundle id")
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}
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SymlinkWithoutTarget {
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description("Symlink without target")
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}
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}
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}
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impl Repository {
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fn check_chunk(&self, hash: Hash) -> Result<(), RepositoryError> {
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// Find bundle and chunk id in index
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let found = if let Some(found) = self.index.get(&hash) {
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found
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} else {
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return Err(RepositoryIntegrityError::MissingChunk(hash).into());
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};
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// Lookup bundle id from map
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let bundle_id = try!(self.get_bundle_id(found.bundle));
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// Get bundle object from bundledb
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let bundle = if let Some(bundle) = self.bundles.get_bundle(&bundle_id) {
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bundle
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} else {
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return Err(RepositoryIntegrityError::MissingBundle(bundle_id.clone()).into())
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};
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// Get chunk from bundle
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if bundle.info.chunk_count > found.chunk as usize {
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Ok(())
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} else {
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Err(RepositoryIntegrityError::NoSuchChunk(bundle_id.clone(), found.chunk).into())
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}
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//TODO: check that contents match their hash
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}
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pub fn check(&mut self, full: bool) -> Result<(), RepositoryError> {
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try!(self.flush());
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try!(self.bundles.check(full));
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try!(self.index.check());
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let mut pos = 0;
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loop {
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pos = if let Some(pos) = self.index.next_entry(pos) {
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pos
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} else {
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break
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};
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let entry = self.index.get_entry(pos).unwrap();
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try!(self.check_chunk(entry.key));
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pos += 1;
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}
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if self.next_content_bundle == self.next_meta_bundle {
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return Err(RepositoryIntegrityError::InvalidNextBundleId.into())
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}
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if self.bundle_map.get(self.next_content_bundle).is_some() {
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return Err(RepositoryIntegrityError::InvalidNextBundleId.into())
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}
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if self.bundle_map.get(self.next_meta_bundle).is_some() {
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return Err(RepositoryIntegrityError::InvalidNextBundleId.into())
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}
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Ok(())
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}
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}
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