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optimizing memory usage #190

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merged 4 commits into from
Sep 14, 2023
Merged

optimizing memory usage #190

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8df58f9
loading minimal data during bootstrap
mariocynicys Feb 17, 2023
fad3ad1
dropping `last_known_blocks` after using it
mariocynicys Feb 22, 2023
cab6151
Getting rid of in-memory data to avoid unbounded memory growth
mariocynicys Mar 7, 2023
1790fe3
Make random appointments variable in size
mariocynicys Aug 30, 2023
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19 changes: 16 additions & 3 deletions teos-common/src/test_utils.rs
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Original file line number Diff line number Diff line change
Expand Up @@ -5,10 +5,9 @@ use rand::distributions::Standard;
use rand::prelude::Distribution;
use rand::Rng;

use bitcoin::consensus;
use bitcoin::hashes::Hash;
use bitcoin::secp256k1::SecretKey;
use bitcoin::Txid;
use bitcoin::{consensus, Script, Transaction, TxOut, Txid};

use crate::appointment::{Appointment, Locator};
use crate::cryptography;
Expand All @@ -32,6 +31,12 @@ pub fn get_random_user_id() -> UserId {
UserId(pk)
}

pub fn get_random_locator() -> Locator {
let mut rng = rand::thread_rng();

Locator::from_slice(&rng.gen::<[u8; 16]>()).unwrap()
}

pub fn generate_random_appointment(dispute_txid: Option<&Txid>) -> Appointment {
let dispute_txid = match dispute_txid {
Some(l) => *l,
Expand All @@ -42,7 +47,15 @@ pub fn generate_random_appointment(dispute_txid: Option<&Txid>) -> Appointment {
};

let tx_bytes = Vec::from_hex(TX_HEX).unwrap();
let penalty_tx = consensus::deserialize(&tx_bytes).unwrap();
let mut penalty_tx: Transaction = consensus::deserialize(&tx_bytes).unwrap();

// Append a random-sized OP_RETURN to make each transcation random in size.
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penalty_tx.output.push(TxOut {
value: 0,
script_pubkey: Script::new_op_return(&cryptography::get_random_bytes(
get_random_int::<usize>() % 81,
)),
});

let mut raw_locator: [u8; 16] = cryptography::get_random_bytes(16).try_into().unwrap();
raw_locator.copy_from_slice(&dispute_txid[..16]);
Expand Down
21 changes: 15 additions & 6 deletions teos/src/api/http.rs
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Original file line number Diff line number Diff line change
Expand Up @@ -660,8 +660,11 @@ mod tests_methods {
};
use super::*;

use crate::extended_appointment::UUID;
use crate::test_utils::{generate_dummy_appointment, ApiConfig, DURATION, SLOTS};
use crate::responder::{ConfirmationStatus, TransactionTracker};
use crate::test_utils::{
generate_dummy_appointment, get_random_tx, ApiConfig, DURATION, SLOTS,
};
use crate::watcher::Breach;

use teos_common::test_utils::get_random_user_id;
use teos_common::{cryptography, UserId};
Expand Down Expand Up @@ -830,14 +833,20 @@ mod tests_methods {
.await
.unwrap();

// Add the appointment to the Responder so it counts as triggered
let appointment = generate_dummy_appointment(None).inner;
let signature = cryptography::sign(&appointment.to_vec(), &user_sk).unwrap();
// Add the appointment to the Responder as a tracker so it counts as triggered
let dispute_tx = get_random_tx();
let tracker = TransactionTracker::new(
Breach::new(dispute_tx.clone(), get_random_tx()),
UserId(user_pk),
ConfirmationStatus::ConfirmedIn(100),
);
internal_api
.get_watcher()
.add_random_tracker_to_responder(UUID::new(appointment.locator, UserId(user_pk)));
.add_dummy_tracker_to_responder(&tracker);

// Try to add it via the http API
let appointment = generate_dummy_appointment(Some(&dispute_tx.txid())).inner;
let signature = cryptography::sign(&appointment.to_vec(), &user_sk).unwrap();
assert_eq!(
check_api_error(
Endpoint::AddAppointment,
Expand Down
77 changes: 43 additions & 34 deletions teos/src/api/internal.rs
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Original file line number Diff line number Diff line change
Expand Up @@ -2,6 +2,7 @@ use std::sync::{Arc, Condvar, Mutex};
use tonic::{Code, Request, Response, Status};
use triggered::Trigger;

use crate::extended_appointment::UUID;
use crate::protos as msgs;
use crate::protos::private_tower_services_server::PrivateTowerServices;
use crate::protos::public_tower_services_server::PublicTowerServices;
Expand Down Expand Up @@ -386,10 +387,14 @@ impl PrivateTowerServices for Arc<InternalAPI> {
})?;

match self.watcher.get_user_info(user_id) {
Some(info) => Ok(Response::new(msgs::GetUserResponse {
Some((info, locators)) => Ok(Response::new(msgs::GetUserResponse {
available_slots: info.available_slots,
subscription_expiry: info.subscription_expiry,
appointments: info.appointments.keys().map(|uuid| uuid.to_vec()).collect(),
// TODO: Should make it return locators and make `get_appointments` queryable using the (user_id, locator) pair for consistency.
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appointments: locators
.into_iter()
.map(|locator| UUID::new(locator, user_id).to_vec())
.collect(),
})),
None => Err(Status::new(Code::NotFound, "User not found")),
}
Expand Down Expand Up @@ -429,11 +434,10 @@ mod tests_private_api {
use bitcoin::hashes::Hash;
use bitcoin::Txid;

use crate::extended_appointment::UUID;
use crate::responder::{ConfirmationStatus, TransactionTracker};
use crate::test_utils::{
create_api, generate_dummy_appointment, generate_uuid, get_random_tx, DURATION, SLOTS,
START_HEIGHT,
create_api, generate_dummy_appointment, generate_dummy_appointment_with_user,
get_random_tx, DURATION, SLOTS, START_HEIGHT,
};
use crate::watcher::Breach;

Expand Down Expand Up @@ -486,9 +490,7 @@ mod tests_private_api {
let (internal_api, _s) = create_api().await;

// Add data to the Responser so we can retrieve it later on
internal_api
.watcher
.add_random_tracker_to_responder(generate_uuid());
internal_api.watcher.add_random_tracker_to_responder();

let response = internal_api
.get_all_appointments(Request::new(()))
Expand Down Expand Up @@ -588,7 +590,7 @@ mod tests_private_api {
);
internal_api
.watcher
.add_dummy_tracker_to_responder(generate_uuid(), &tracker);
.add_dummy_tracker_to_responder(&tracker);
}

let locator = Locator::new(dispute_tx.txid());
Expand Down Expand Up @@ -655,9 +657,7 @@ mod tests_private_api {

// And the Responder
for _ in 0..3 {
internal_api
.watcher
.add_random_tracker_to_responder(generate_uuid());
internal_api.watcher.add_random_tracker_to_responder();
}

let response = internal_api
Expand Down Expand Up @@ -730,12 +730,11 @@ mod tests_private_api {
assert!(response.appointments.is_empty());

// Add an appointment and check back
let appointment = generate_dummy_appointment(None).inner;
let uuid = UUID::new(appointment.locator, user_id);
let user_signature = cryptography::sign(&appointment.to_vec(), &user_sk).unwrap();
let (uuid, appointment) = generate_dummy_appointment_with_user(user_id, None);
let user_signature = cryptography::sign(&appointment.inner.to_vec(), &user_sk).unwrap();
internal_api
.watcher
.add_appointment(appointment.clone(), user_signature)
.add_appointment(appointment.inner, user_signature)
.unwrap();

let response = internal_api
Expand Down Expand Up @@ -786,10 +785,12 @@ mod tests_private_api {
mod tests_public_api {
use super::*;

use crate::extended_appointment::UUID;
use crate::responder::{ConfirmationStatus, TransactionTracker};
use crate::test_utils::{
create_api, create_api_with_config, generate_dummy_appointment, ApiConfig, DURATION, SLOTS,
create_api, create_api_with_config, generate_dummy_appointment, get_random_tx, ApiConfig,
DURATION, SLOTS,
};
use crate::watcher::Breach;
use teos_common::cryptography::{self, get_random_keypair};

#[tokio::test]
Expand Down Expand Up @@ -900,12 +901,12 @@ mod tests_public_api {
internal_api.watcher.register(UserId(user_pk)).unwrap();

let appointment = generate_dummy_appointment(None).inner;
let user_signature = cryptography::sign(&appointment.to_vec(), &user_sk).unwrap();
let signature = cryptography::sign(&appointment.to_vec(), &user_sk).unwrap();

let response = internal_api
.add_appointment(Request::new(common_msgs::AddAppointmentRequest {
appointment: Some(appointment.clone().into()),
signature: user_signature.clone(),
signature,
}))
.await
.unwrap()
Expand All @@ -925,12 +926,12 @@ mod tests_public_api {
let (user_sk, _) = get_random_keypair();

let appointment = generate_dummy_appointment(None).inner;
let user_signature = cryptography::sign(&appointment.to_vec(), &user_sk).unwrap();
let signature = cryptography::sign(&appointment.to_vec(), &user_sk).unwrap();

match internal_api
.add_appointment(Request::new(common_msgs::AddAppointmentRequest {
appointment: Some(appointment.clone().into()),
signature: user_signature.clone(),
signature,
}))
.await
{
Expand All @@ -954,12 +955,12 @@ mod tests_public_api {
internal_api.watcher.register(UserId(user_pk)).unwrap();

let appointment = generate_dummy_appointment(None).inner;
let user_signature = cryptography::sign(&appointment.to_vec(), &user_sk).unwrap();
let signature = cryptography::sign(&appointment.to_vec(), &user_sk).unwrap();

match internal_api
.add_appointment(Request::new(common_msgs::AddAppointmentRequest {
appointment: Some(appointment.clone().into()),
signature: user_signature.clone(),
signature,
}))
.await
{
Expand All @@ -983,12 +984,12 @@ mod tests_public_api {
internal_api.watcher.register(UserId(user_pk)).unwrap();

let appointment = generate_dummy_appointment(None).inner;
let user_signature = cryptography::sign(&appointment.to_vec(), &user_sk).unwrap();
let signature = cryptography::sign(&appointment.to_vec(), &user_sk).unwrap();

match internal_api
.add_appointment(Request::new(common_msgs::AddAppointmentRequest {
appointment: Some(appointment.clone().into()),
signature: user_signature.clone(),
signature,
}))
.await
{
Expand All @@ -1008,16 +1009,24 @@ mod tests_public_api {
let user_id = UserId(user_pk);
internal_api.watcher.register(user_id).unwrap();

let appointment = generate_dummy_appointment(None).inner;
let user_signature = cryptography::sign(&appointment.to_vec(), &user_sk).unwrap();
// Add a tracker to the responder to simulate it being triggered.
let dispute_tx = get_random_tx();
let tracker = TransactionTracker::new(
Breach::new(dispute_tx.clone(), get_random_tx()),
user_id,
ConfirmationStatus::ConfirmedIn(100),
);
internal_api
.watcher
.add_random_tracker_to_responder(UUID::new(appointment.locator, user_id));
.get_watcher()
.add_dummy_tracker_to_responder(&tracker);

// Try to add it again using the API.
let appointment = generate_dummy_appointment(Some(&dispute_tx.txid())).inner;
let signature = cryptography::sign(&appointment.to_vec(), &user_sk).unwrap();
match internal_api
.add_appointment(Request::new(common_msgs::AddAppointmentRequest {
appointment: Some(appointment.clone().into()),
signature: user_signature.clone(),
appointment: Some(appointment.into()),
signature,
}))
.await
{
Expand All @@ -1038,12 +1047,12 @@ mod tests_public_api {

let (user_sk, _) = get_random_keypair();
let appointment = generate_dummy_appointment(None).inner;
let user_signature = cryptography::sign(&appointment.to_vec(), &user_sk).unwrap();
let signature = cryptography::sign(&appointment.to_vec(), &user_sk).unwrap();

match internal_api
.add_appointment(Request::new(common_msgs::AddAppointmentRequest {
appointment: Some(appointment.clone().into()),
signature: user_signature.clone(),
signature,
}))
.await
{
Expand Down
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