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use std::str::FromStr;
use std::path::PathBuf;
use std::path::Path;
use anyhow::anyhow;
use anyhow::Error;
use anyhow::Context;
use anyhow::Result;
use tonic::Request;
use tonic::Response;
use tonic::Status;
use resiter::AndThen;
use resiter::Map;
use fss::VersionReply;
use fss::VersionRequest;
use fss::IndexFileRequest;
use fss::IndexFileReply;
use fss::SearchQueryRequest;
use fss::SearchResponse;
mod config;
mod cli;
mod ft;
mod schema;
mod fss {
tonic::include_proto!("fss"); // The string specified here must match the proto package name
}
#[derive(getset::CopyGetters)]
pub struct Server {
index: tantivy::Index,
#[getset(get_copy = "pub")]
field_path: tantivy::schema::Field,
#[getset(get_copy = "pub")]
field_ft: tantivy::schema::Field,
#[getset(get_copy = "pub")]
field_body: tantivy::schema::Field,
}
impl Server {
fn write_file_to_index(&self, filepath: &Path) -> Result<()> {
let ext = filepath
.extension()
.map(ToOwned::to_owned)
.and_then(|osstr| osstr.to_str().map(|s| s.to_string()))
.ok_or_else(|| anyhow!("Path {} is not UTF8", filepath.display()))?;
let mut doc = tantivy::Document::default();
doc.add_text(self.field_path(), filepath.display().to_string());
doc.add_text(self.field_ft(), &ext);
let doc = self.parse_for_file(doc, filepath, &ext)?;
let mut index_writer = self.index.writer(50_000_000)?;
index_writer.add_document(doc);
index_writer.commit()?;
Ok(())
}
fn parse_for_file(&self, doc: tantivy::Document, filepath: &Path, ext: &str) -> Result<tantivy::Document> {
use crate::ft::FileTypeParser;
use crate::ft::TextFileParser;
match ext {
"txt" => Ok(TextFileParser {}),
_ => Err(anyhow!("No parser available for {}", ext))
}?
.parse(&self, filepath, ext, doc)
}
fn search(&self, query_str: &str) -> Result<Vec<PathBuf>> {
let reader = self.index
.reader_builder()
.reload_policy(tantivy::ReloadPolicy::OnCommit)
.try_into()?;
let searcher = reader.searcher();
let query_parser = tantivy::query::QueryParser::for_index(&self.index, vec![self.field_path, self.field_ft, self.field_body]);
let query = query_parser.parse_query(query_str)?;
let top_docs = searcher.search(&query, &tantivy::collector::TopDocs::with_limit(10))?;
let results = top_docs
.into_iter()
.map(|(_score, adr)| searcher.doc(adr).map_err(Error::from))
.and_then_ok(|retr| {
retr.get_all(self.field_path)
.map(|value| {
value.text().ok_or_else(|| anyhow!("Not a text value.."))
})
.map_ok(PathBuf::from)
.collect::<Result<Vec<_>>>()
})
.collect::<Result<Vec<Vec<PathBuf>>>>()?
.into_iter()
.map(Vec::into_iter)
.flatten()
.collect();
Ok(results)
}
}
#[tonic::async_trait]
impl fss::fss_server::Fss for Server {
async fn get_version(&self, _request: Request<VersionRequest>) -> Result<Response<VersionReply>, Status> {
let reply = fss::VersionReply {
version: version::version!().to_string(),
};
Ok(Response::new(reply))
}
async fn index_file(&self, request: Request<IndexFileRequest>) -> Result<Response<IndexFileReply>, Status> {
let error = match self.write_file_to_index(request.get_ref().path.as_ref()) {
Ok(()) => false,
Err(e) => {
log::error!("Error writing to index: {} -> {:?}", request.get_ref().path, e);
true
}
};
let reply = fss::IndexFileReply {
error
};
Ok(Response::new(reply))
}
async fn search_query(&self, request: Request<SearchQueryRequest>) -> Result<Response<SearchResponse>, Status> {
let (success, pathes) = match self.search(&request.get_ref().query) {
Ok(pathes) => (true, pathes),
Err(e) => {
log::error!("Error searching with '{}' -> {:?}", request.get_ref().query, e);
(false, vec![])
}
};
let reply = fss::SearchResponse {
success,
pathes: pathes.into_iter().map(|pb| pb.display().to_string()).collect(),
};
Ok(Response::new(reply))
}
}
#[tokio::main]
async fn main() -> Result<()> {
let cli = crate::cli::server_app();
let matches = cli.get_matches();
let _ = env_logger::try_init()?;
let mut config = ::config::Config::default();
{
let xdg = xdg::BaseDirectories::with_prefix("fss")?;
let xdg_config = xdg.find_config_file("config.toml")
.ok_or_else(|| anyhow!("No configuration file found with XDG: {}", xdg.get_config_home().display()))?;
log::debug!("Configuration file found with XDG: {}", xdg_config.display());
config.merge(::config::File::from(xdg_config).required(false))
.context("Failed to load config.toml from XDG configuration directory")?;
}
let config = config.try_into::<crate::config::Config>()?;
let server_addr = matches.value_of("server_addr").unwrap_or_else(|| config.server_addr());
let server_port = matches.value_of("server_port").map(usize::from_str).unwrap_or_else(|| Ok(*config.server_port()))?;
let addr = format!("{}:{}", server_addr, server_port).parse()?;
let server = {
let index_path = tantivy::directory::MmapDirectory::open(config.database_path())?;
let schema = crate::schema::schema();
let index = tantivy::Index::open_or_create(index_path, schema.clone())?;
let field_path = schema.get_field("path").ok_or_else(|| anyhow!("BUG"))?;
let field_ft = schema.get_field("ft").ok_or_else(|| anyhow!("BUG"))?;
let field_body = schema.get_field("body").ok_or_else(|| anyhow!("BUG"))?;
Server {
index,
field_path,
field_ft,
field_body,
}
};
tonic::transport::Server::builder()
.add_service(fss::fss_server::FssServer::new(server))
.serve(addr)
.await
.map_err(Error::from)
.map(|_| ())
}
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