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add version guard in copy_and_compact_to_path function

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many 2020-09-07 15:51:34 +02:00
parent 118c673eaf
commit b43137b508
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GPG Key ID: 2CEF23B75189EACA
1 changed files with 29 additions and 6 deletions
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35
meilisearch-core/src/database.rs
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@ -40,6 +40,7 @@ pub struct Database {
indexes_store: heed::Database<Str, Unit>,
indexes: RwLock<HashMap<String, (Index, thread::JoinHandle<MResult<()>>)>>,
update_fn: Arc<ArcSwapFn>,
database_version: (u32, u32, u32),
}
pub struct DatabaseOptions {
@ -165,7 +166,7 @@ fn update_awaiter(
/// Ensures Meilisearch version is compatible with the database, returns an error versions mismatch.
/// If create is set to true, a VERSION file is created with the current version.
fn version_guard(path: &Path, create: bool) -> MResult<()> {
fn version_guard(path: &Path, create: bool) -> MResult<(u32, u32, u32)> {
let current_version_major = env!("CARGO_PKG_VERSION_MAJOR");
let current_version_minor = env!("CARGO_PKG_VERSION_MINOR");
let current_version_patch = env!("CARGO_PKG_VERSION_PATCH");
@ -186,9 +187,16 @@ fn version_guard(path: &Path, create: bool) -> MResult<()> {
// the first is always the complete match, safe to unwrap because we have a match
let version_major = version.get(1).unwrap().as_str();
let version_minor = version.get(2).unwrap().as_str();
let version_patch = version.get(3).unwrap().as_str();
if version_major != current_version_major || version_minor != current_version_minor {
return Err(Error::VersionMismatch(format!("{}.{}.XX", version_major, version_minor)));
Err(Error::VersionMismatch(format!("{}.{}.XX", version_major, version_minor)))
} else {
Ok((
version_major.parse().or_else(|e| Err(Error::VersionMismatch(format!("error parsing database version: {}", e))))?,
version_minor.parse().or_else(|e| Err(Error::VersionMismatch(format!("error parsing database version: {}", e))))?,
version_patch.parse().or_else(|e| Err(Error::VersionMismatch(format!("error parsing database version: {}", e))))?
))
}
}
Err(error) => {
@ -202,17 +210,22 @@ fn version_guard(path: &Path, create: bool) -> MResult<()> {
current_version_major,
current_version_minor,
current_version_patch).as_bytes())?;
Ok((
current_version_major.parse().or_else(|e| Err(Error::VersionMismatch(format!("error parsing database version: {}", e))))?,
current_version_minor.parse().or_else(|e| Err(Error::VersionMismatch(format!("error parsing database version: {}", e))))?,
current_version_patch.parse().or_else(|e| Err(Error::VersionMismatch(format!("error parsing database version: {}", e))))?
))
} else {
// when no version file is found and we were not told to create one, this
// means that the version is inferior to the one this feature was added in.
return Err(Error::VersionMismatch("<0.12.0".to_string()));
Err(Error::VersionMismatch("<0.12.0".to_string()))
}
}
_ => return Err(error.into())
_ => Err(error.into())
}
}
}
Ok(())
}
impl Database {
@ -224,7 +237,7 @@ impl Database {
fs::create_dir_all(&path)?;
// create file only if main db wasn't created before (first run)
version_guard(path.as_ref(), !main_path.exists() && !update_path.exists())?;
let database_version = version_guard(path.as_ref(), !main_path.exists() && !update_path.exists())?;
fs::create_dir_all(&main_path)?;
let env = heed::EnvOpenOptions::new()
@ -302,6 +315,7 @@ impl Database {
indexes_store,
indexes: RwLock::new(indexes),
update_fn,
database_version,
})
}
@ -469,9 +483,18 @@ impl Database {
let env_path = path.join("main");
let env_update_path = path.join("update");
let env_version_path = path.join("VERSION");
fs::create_dir(&env_path)?;
fs::create_dir(&env_update_path)?;
// write Database Version
let (current_version_major, current_version_minor, current_version_patch) = self.database_version;
let mut version_file = File::create(&env_version_path)?;
version_file.write_all(format!("{}.{}.{}",
current_version_major,
current_version_minor,
current_version_patch).as_bytes())?;
let env_path = env_path.join("data.mdb");
let env_file = self.env.copy_to_path(&env_path, CompactionOption::Enabled)?;