You are an expert in writing code in many different languages. Your goal is to perform code completion for the following code, keeping in mind the rest of the code and the file meta data.
    Metadata details:
    filename: index.rs
    path of file: ./repos/librevault/src/util/src
    
    the code of the file until where you have to start completion: use std::fmt::{Display, Formatter};
use std::path::Path;
use std::sync::Mutex;

use crate::indexer::proto;
use log::{debug, trace};
use prost::Message;
use rusqlite::{named_params, Connection, Params, Result};
use serde::Serializer;
use serde::{Deserialize, 
    
    pub fn put_meta(&self, meta: &SignedMeta, fully_assembled: bool) -> Result<(), IndexError> {
        let de_meta = proto::Meta::decode(&*meta.meta).unwrap();

        let mut conn = self.conn.lock().unwrap();
        let mut tx = (*conn).transaction()?;
        {
            let sp = tx.savepoint()?;

            let _ = sp.execute(
                "INSERT OR REPLACE INTO meta (path_id, meta, signature, type, assembled) VALUES (:path_id, :meta, :signature, :type, :assembled);", named_params! {
                ":path_id": de_meta.path_id,
                ":meta": meta.meta,
                ":signature": meta.signature,
                ":type": de_meta.meta_type,
                ":assembled": fully_assembled
            })?;

            if de_meta.type_specific_metadata.is_some() {
                if let proto::meta::TypeSpecificMetadata::FileMetadata(tsm) =
                    de_meta.type_specific_metadata.unwrap()
                {
                    trace!("Putting {} chunks", tsm.chunks.len());
                    let mut offset = 0;
                    for chunk in tsm.chunks {
                        sp.execute(
                            "INSERT OR IGNORE INTO chunk (ct_hash, size, iv) VALUES (:ct_hash, :size, :iv);", named_params! {":ct_hash": chunk.ct_hash, ":size": chunk.size, ":iv": chunk.iv}
                        )?;
                        sp.execute(
                            "INSERT OR REPLACE INTO openfs (ct_hash, path_id, [offset], assembled) VALUES (:ct_hash, :path_id, :offset, :assembled);", named_params! {":ct_hash": chunk.ct_hash, ":path_id": de_meta.path_id, ":offset": offset, ":assembled": fully_assembled}
                        )?;
                        offset += chunk.size;
                    }
                }
            }
            sp.commit()?;
        }
        tx.commit()?;

        debug!(
            "Added Meta of {}, t: {:?}, a: {}",
            hex::encode(de_meta.path_id),
            de_meta.meta_type,
            fully_assembled
        );
        Ok(())
    }