use std::fs; use std::io::{self, ErrorKind}; use std::path::Path; /// The name of the file that contains the version of the database. pub const VERSION_FILE_NAME: &str = "VERSION"; static VERSION_MAJOR: &str = env!("CARGO_PKG_VERSION_MAJOR"); static VERSION_MINOR: &str = env!("CARGO_PKG_VERSION_MINOR"); static VERSION_PATCH: &str = env!("CARGO_PKG_VERSION_PATCH"); /// Persists the version of the current Meilisearch binary to a VERSION file pub fn create_version_file(db_path: &Path) -> io::Result<()> { let version_path = db_path.join(VERSION_FILE_NAME); fs::write(version_path, format!("{}.{}.{}", VERSION_MAJOR, VERSION_MINOR, VERSION_PATCH)) } /// Ensures Meilisearch version is compatible with the database, returns an error versions mismatch. pub fn check_version_file(db_path: &Path) -> anyhow::Result<()> { let version_path = db_path.join(VERSION_FILE_NAME); match fs::read_to_string(version_path) { Ok(version) => { let version_components = version.split('.').collect::>(); let (major, minor, patch) = match &version_components[..] { [major, minor, patch] => (major.to_string(), minor.to_string(), patch.to_string()), _ => return Err(VersionFileError::MalformedVersionFile.into()), }; if major != VERSION_MAJOR || minor != VERSION_MINOR { return Err(VersionFileError::VersionMismatch { major, minor, patch }.into()); } } Err(error) => { return match error.kind() { ErrorKind::NotFound => Err(VersionFileError::MissingVersionFile.into()), _ => Err(error.into()), } } } Ok(()) } #[derive(thiserror::Error, Debug)] pub enum VersionFileError { #[error( "Meilisearch (v{}) failed to infer the version of the database. To update Meilisearch please follow our guide on https://docs.meilisearch.com/learn/advanced/updating.html.", env!("CARGO_PKG_VERSION").to_string() )] MissingVersionFile, #[error("Version file is corrupted and thus Meilisearch is unable to determine the version of the database.")] MalformedVersionFile, #[error( "Expected Meilisearch engine version: {major}.{minor}.{patch}, current engine version: {}. To update Meilisearch please follow our guide on https://docs.meilisearch.com/learn/advanced/updating.html.", env!("CARGO_PKG_VERSION").to_string() )] VersionMismatch { major: String, minor: String, patch: String }, }