Files
windmill/backend/windmill-worker/src/common.rs
2025-02-21 18:09:25 +01:00

984 lines
33 KiB
Rust

use async_recursion::async_recursion;
use itertools::Itertools;
use lazy_static::lazy_static;
use regex::Regex;
use reqwest::Client;
use serde::{Deserialize, Serialize};
use serde_json::value::RawValue;
use serde_json::{json, Value};
use sha2::Digest;
use sqlx::types::Json;
use sqlx::{Pool, Postgres};
use tokio::process::Command;
use tokio::{fs::File, io::AsyncReadExt};
#[cfg(feature = "parquet")]
use windmill_common::s3_helpers::{
get_etag_or_empty, LargeFileStorage, ObjectStoreResource, S3Object,
};
use windmill_common::variables::{build_crypt_with_key_suffix, decrypt};
use windmill_common::worker::{
to_raw_value, write_file, CLOUD_HOSTED, ROOT_CACHE_DIR, WORKER_CONFIG,
};
use windmill_common::{
cache::{Cache, RawData},
error::{self, Error},
jobs::QueuedJob,
scripts::ScriptHash,
variables::ContextualVariable,
};
use anyhow::{anyhow, Result};
use std::path::Path;
use std::{collections::HashMap, sync::Arc, time::Duration};
use uuid::Uuid;
use windmill_common::{variables, DB};
use tokio::{io::AsyncWriteExt, process::Child, time::Instant};
use crate::{
AuthedClient, AuthedClientBackgroundTask, JOB_DEFAULT_TIMEOUT, MAX_RESULT_SIZE,
MAX_TIMEOUT_DURATION, PATH_ENV,
};
pub async fn build_args_map<'a>(
job: &'a QueuedJob,
client: &AuthedClientBackgroundTask,
db: &Pool<Postgres>,
) -> error::Result<Option<HashMap<String, Box<RawValue>>>> {
if let Some(args) = &job.args {
return transform_json(client, &job.workspace_id, &args.0, &job, db).await;
}
return Ok(None);
}
pub fn check_executor_binary_exists(
executor: &str,
executor_path: &str,
language: &str,
) -> Result<(), Error> {
if !Path::new(executor_path).exists() {
#[cfg(feature = "enterprise")]
let msg = format!("Couldn't find {executor} at {}. This probably means that you are not using the windmill-ee-full image. Please use the image `ghcr.io/windmill-labs/windmill-ee-full` for your instance in order to run {language} jobs.", executor_path);
#[cfg(not(feature = "enterprise"))]
let msg = format!("Couldn't find {executor} at {}. This probably means that you are not using the windmill-full image. Please use the image `ghcr.io/windmill-labs/windmill-full` for your instance in order to run {language} jobs.", executor_path);
return Err(Error::NotFound(msg));
}
Ok(())
}
pub async fn build_args_values(
job: &QueuedJob,
client: &AuthedClientBackgroundTask,
db: &Pool<Postgres>,
) -> error::Result<HashMap<String, serde_json::Value>> {
if let Some(args) = &job.args {
transform_json_as_values(client, &job.workspace_id, &args.0, &job, db).await
} else {
Ok(HashMap::new())
}
}
#[tracing::instrument(level = "trace", skip_all)]
pub async fn create_args_and_out_file(
client: &AuthedClientBackgroundTask,
job: &QueuedJob,
job_dir: &str,
db: &Pool<Postgres>,
) -> Result<(), Error> {
if let Some(args) = job.args.as_ref() {
if let Some(x) = transform_json(client, &job.workspace_id, &args.0, job, db).await? {
write_file(
job_dir,
"args.json",
&serde_json::to_string(&x).unwrap_or_else(|_| "{}".to_string()),
)?;
} else {
write_file(
job_dir,
"args.json",
&serde_json::to_string(&args).unwrap_or_else(|_| "{}".to_string()),
)?;
}
} else {
write_file(job_dir, "args.json", "{}")?;
};
write_file(job_dir, "result.json", "")?;
Ok(())
}
pub async fn write_file_binary(dir: &str, path: &str, content: &[u8]) -> error::Result<File> {
let path = format!("{}/{}", dir, path);
let mut file = File::create(&path).await?;
file.write_all(content).await?;
file.flush().await?;
Ok(file)
}
lazy_static::lazy_static! {
static ref RE_RES_VAR: Regex = Regex::new(r#"\$(?:var|res|encrypted)\:"#).unwrap();
}
pub async fn transform_json<'a>(
client: &AuthedClientBackgroundTask,
workspace: &str,
vs: &'a HashMap<String, Box<RawValue>>,
job: &QueuedJob,
db: &Pool<Postgres>,
) -> error::Result<Option<HashMap<String, Box<RawValue>>>> {
let mut has_match = false;
for (_, v) in vs {
let inner_vs = v.get();
if (*RE_RES_VAR).is_match(inner_vs) {
has_match = true;
break;
}
}
if !has_match {
return Ok(None);
}
let mut r = HashMap::new();
for (k, v) in vs {
let inner_vs = v.get();
if (*RE_RES_VAR).is_match(inner_vs) {
let value = serde_json::from_str(inner_vs).map_err(|e| {
error::Error::internal_err(format!("Error while parsing inner arg: {e:#}"))
})?;
let transformed =
transform_json_value(&k, &client.get_authed().await, workspace, value, job, db)
.await?;
let as_raw = serde_json::from_value(transformed).map_err(|e| {
error::Error::internal_err(format!("Error while parsing inner arg: {e:#}"))
})?;
r.insert(k.to_string(), as_raw);
} else {
r.insert(k.to_string(), v.to_owned());
}
}
Ok(Some(r))
}
pub async fn transform_json_as_values<'a>(
client: &AuthedClientBackgroundTask,
workspace: &str,
vs: &'a HashMap<String, Box<RawValue>>,
job: &QueuedJob,
db: &Pool<Postgres>,
) -> error::Result<HashMap<String, serde_json::Value>> {
let mut r: HashMap<String, serde_json::Value> = HashMap::new();
for (k, v) in vs {
let inner_vs = v.get();
if (*RE_RES_VAR).is_match(inner_vs) {
let value = serde_json::from_str(inner_vs).map_err(|e| {
error::Error::internal_err(format!("Error while parsing inner arg: {e:#}"))
})?;
let transformed =
transform_json_value(&k, &client.get_authed().await, workspace, value, job, db)
.await?;
let as_raw = serde_json::from_value(transformed).map_err(|e| {
error::Error::internal_err(format!("Error while parsing inner arg: {e:#}"))
})?;
r.insert(k.to_string(), as_raw);
} else {
r.insert(
k.to_string(),
serde_json::from_str(v.get()).unwrap_or_else(|_| serde_json::Value::Null),
);
}
}
Ok(r)
}
pub fn parse_npm_config(s: &str) -> (String, Option<String>) {
let (url, token_opt) = if s.contains(":_authToken=") {
let split_url = s.split(":_authToken=").collect::<Vec<&str>>();
let url = split_url
.get(0)
.map(|u| u.to_string())
.unwrap_or("".to_string());
let token = split_url
.get(1)
.map(|t| t.to_string())
.unwrap_or("".to_string());
(url, Some(token))
} else {
(s.to_owned(), None)
};
return (url, token_opt);
}
#[async_recursion]
pub async fn get_root_job_id(job: &Uuid, db: &Pool<Postgres>) -> anyhow::Result<Uuid> {
let njob = sqlx::query_scalar!(
"SELECT flow_innermost_root_job FROM v2_job WHERE id = $1",
job
)
.fetch_optional(db)
.await?
.flatten();
if let Some(root_job) = njob {
if root_job == *job {
return Ok(job.to_owned());
}
get_root_job_id(&root_job, db).await
} else {
Ok(job.to_owned())
}
}
#[async_recursion]
pub async fn transform_json_value(
name: &str,
client: &AuthedClient,
workspace: &str,
v: Value,
job: &QueuedJob,
db: &Pool<Postgres>,
) -> error::Result<Value> {
match v {
Value::String(y) if y.starts_with("$var:") => {
let path = y.strip_prefix("$var:").unwrap();
client
.get_variable_value(path)
.await
.map(|x| json!(x))
.map_err(|e| {
Error::NotFound(format!("Variable {path} not found for `{name}`: {e:#}"))
})
}
Value::String(y) if y.starts_with("$res:") => {
let path = y.strip_prefix("$res:").unwrap();
if path.split("/").count() < 2 {
return Err(Error::internal_err(format!(
"Argument `{name}` is an invalid resource path: {path}",
)));
}
client
.get_resource_value_interpolated::<serde_json::Value>(
path,
Some(job.id.to_string()),
)
.await
.map_err(|e| {
Error::NotFound(format!("Resource {path} not found for `{name}`: {e:#}"))
})
}
Value::String(y) if y.starts_with("$encrypted:") => {
let encrypted = y.strip_prefix("$encrypted:").unwrap();
let root_job_id = get_root_job_id(&job.root_job.unwrap_or_else(|| job.id), db).await?;
let mc = build_crypt_with_key_suffix(&db, &job.workspace_id, &root_job_id.to_string())
.await?;
decrypt(&mc, encrypted.to_string()).and_then(|x| {
serde_json::from_str(&x).map_err(|e| Error::internal_err(e.to_string()))
})
// let path = y.strip_prefix("$res:").unwrap();
}
Value::String(y) if y.starts_with("$") => {
let flow_path = if let Some(uuid) = job.parent_job {
sqlx::query_scalar!("SELECT runnable_path FROM v2_job WHERE id = $1", uuid)
.fetch_optional(db)
.await?
.flatten()
} else {
None
};
let variables = variables::get_reserved_variables(
db,
&job.workspace_id,
&client.token,
&job.email,
&job.created_by,
&job.id.to_string(),
&job.permissioned_as,
job.script_path.clone(),
job.parent_job.map(|x| x.to_string()),
flow_path,
job.schedule_path.clone(),
job.flow_step_id.clone(),
job.root_job.clone().map(|x| x.to_string()),
None,
Some(job.scheduled_for.clone()),
)
.await;
let name = y.strip_prefix("$").unwrap();
let value = variables
.iter()
.find(|x| x.name == name)
.map(|x| x.value.clone())
.unwrap_or_else(|| y);
Ok(json!(value))
}
Value::Object(mut m) => {
for (a, b) in m.clone().into_iter() {
m.insert(
a.clone(),
transform_json_value(&a, client, workspace, b, job, &db).await?,
);
}
Ok(Value::Object(m))
}
a @ _ => Ok(a),
}
}
pub async fn read_file_content(path: &str) -> error::Result<String> {
let mut file = File::open(path).await?;
let mut content = "".to_string();
file.read_to_string(&mut content).await?;
Ok(content)
}
pub async fn read_file_bytes(path: &str) -> error::Result<Vec<u8>> {
let mut file = File::open(path).await?;
let mut content = Vec::new();
file.read_to_end(&mut content).await?;
Ok(content)
}
//this skips more steps than from_str at the cost of being unsafe. The source must ALWAUS gemerate valid json or this can cause UB in the worst case
pub fn unsafe_raw(json: String) -> Box<RawValue> {
unsafe { std::mem::transmute::<Box<str>, Box<RawValue>>(json.into()) }
}
fn check_result_too_big(size: usize) -> error::Result<()> {
if *CLOUD_HOSTED && size > MAX_RESULT_SIZE {
return Err(error::Error::ExecutionErr("Result is too large for the cloud app (limit 2MB).
We highly recommend using object to store and pass heavy data (https://www.windmill.dev/docs/core_concepts/object_storage_in_windmill#read-a-file-from-s3-within-a-script)
Alternatively, if using this script as part of a flow, activate shared folder and use the shared folder to pass heavy data between steps.".to_owned()));
};
Ok(())
}
/// This function assumes that the file contains valid json and will result in UB if it isn't. If
/// the file is user generated or otherwise not guaranteed to be valid used the
/// `read_and_check_file` instead
pub async fn read_file(path: &str) -> error::Result<Box<RawValue>> {
let content = read_file_content(path).await?;
check_result_too_big(content.len())?;
let r = unsafe_raw(content);
return Ok(r);
}
/// Read the `result.json` file. This function assumes that the file contains valid json and will
/// result in undefined behaviour if it isn't. If the result.json is user generated or otherwise
/// not guaranteed to be valid, use `read_and_check_result`
pub async fn read_result(job_dir: &str) -> error::Result<Box<RawValue>> {
return read_file(&format!("{job_dir}/result.json")).await;
}
pub async fn read_and_check_file(path: &str) -> error::Result<Box<RawValue>> {
let content = read_file_content(path).await?;
check_result_too_big(content.len())?;
let raw_value: Box<RawValue> =
serde_json::from_str(&content).map_err(|e| anyhow!("{} is not valid json: {}", path, e))?;
Ok(raw_value)
}
/// Use this to read `result.json` that were user-generated
pub async fn read_and_check_result(job_dir: &str) -> error::Result<Box<RawValue>> {
let result_path = format!("{job_dir}/result.json");
if let Ok(metadata) = tokio::fs::metadata(&result_path).await {
if metadata.len() > 0 {
return read_and_check_file(&result_path)
.await
.map_err(|e| anyhow!("Failed to read result: {}", e).into());
}
}
Ok(to_raw_value(&json!("null")))
}
pub fn capitalize(s: &str) -> String {
let mut c = s.chars();
match c.next() {
None => String::new(),
Some(f) => f.to_uppercase().collect::<String>() + c.as_str(),
}
}
#[tracing::instrument(level = "trace", skip_all)]
pub async fn get_reserved_variables(
job: &QueuedJob,
token: &str,
db: &sqlx::Pool<sqlx::Postgres>,
) -> Result<HashMap<String, String>, Error> {
let flow_path = if let Some(uuid) = job.parent_job {
sqlx::query_scalar!("SELECT runnable_path FROM v2_job WHERE id = $1", uuid)
.fetch_optional(db)
.await?
.flatten()
} else {
None
};
let variables = variables::get_reserved_variables(
db,
&job.workspace_id,
token,
&job.email,
&job.created_by,
&job.id.to_string(),
&job.permissioned_as,
job.script_path.clone(),
job.parent_job.map(|x| x.to_string()),
flow_path,
job.schedule_path.clone(),
job.flow_step_id.clone(),
job.root_job.clone().map(|x| x.to_string()),
None,
Some(job.scheduled_for.clone()),
)
.await
.to_vec();
Ok(build_envs_map(variables).await)
}
pub async fn build_envs_map(context: Vec<ContextualVariable>) -> HashMap<String, String> {
let mut r: HashMap<String, String> =
context.into_iter().map(|rv| (rv.name, rv.value)).collect();
let envs = WORKER_CONFIG.read().await.clone().env_vars;
for env in envs {
r.insert(env.0.clone(), env.1.clone());
}
r
}
pub fn sizeof_val(v: &serde_json::Value) -> usize {
std::mem::size_of::<serde_json::Value>()
+ match v {
serde_json::Value::Null => 0,
serde_json::Value::Bool(_) => 0,
serde_json::Value::Number(_) => 4, // Incorrect if arbitrary_precision is enabled. oh well
serde_json::Value::String(s) => s.capacity(),
serde_json::Value::Array(a) => a.iter().map(sizeof_val).sum(),
serde_json::Value::Object(o) => o
.iter()
.map(|(k, v)| {
std::mem::size_of::<String>()
+ k.capacity()
+ sizeof_val(v)
+ std::mem::size_of::<usize>() * 3
})
.sum(),
}
}
pub async fn update_worker_ping_for_failed_init_script(
db: &DB,
worker_name: &str,
last_job_id: Uuid,
) {
if let Err(e) = sqlx::query!(
"UPDATE worker_ping SET
ping_at = now(),
jobs_executed = 1,
current_job_id = $1,
current_job_workspace_id = 'admins'
WHERE worker = $2",
last_job_id,
worker_name
)
.execute(db)
.await
{
tracing::error!("Error updating worker ping for failed init script: {e:?}");
}
}
pub struct OccupancyMetrics {
pub running_job_started_at: Option<Instant>,
pub total_duration_of_running_jobs: f32,
pub worker_occupancy_rate_history: Vec<(f32, f32)>,
pub start_time: Instant,
}
impl OccupancyMetrics {
pub fn new(start_time: Instant) -> Self {
OccupancyMetrics {
running_job_started_at: None,
total_duration_of_running_jobs: 0.0,
worker_occupancy_rate_history: Vec::new(),
start_time,
}
}
pub fn update_occupancy_metrics(&mut self) -> (f32, Option<f32>, Option<f32>, Option<f32>) {
let metrics = self;
let current_occupied_duration = metrics
.running_job_started_at
.map(|started_at| started_at.elapsed().as_secs_f32())
.unwrap_or(0.0);
let total_occupation = metrics.total_duration_of_running_jobs + current_occupied_duration;
let elapsed = metrics.start_time.elapsed().as_secs_f32();
let (occupancy_rate_15s, occupancy_rate_5m, occupancy_rate_30m) =
if !metrics.worker_occupancy_rate_history.is_empty() {
let mut total_occupation_15s = 0.0;
let mut total_occupation_5m = 0.0;
let mut total_occupation_30m = 0.0;
let mut index30m = 0;
for (i, (past_total_occupation, time)) in
metrics.worker_occupancy_rate_history.iter().enumerate()
{
let diff = elapsed - time;
if diff < 1800.0 && total_occupation_30m == 0.0 {
total_occupation_30m = (total_occupation - past_total_occupation) / diff;
index30m = i;
}
if diff < 300.0 && total_occupation_5m == 0.0 {
total_occupation_5m = (total_occupation - past_total_occupation) / diff;
}
if diff < 15.0 {
total_occupation_15s = (total_occupation - past_total_occupation) / diff;
break;
}
}
//drop all elements before the oldest one in 30m windows
metrics.worker_occupancy_rate_history.drain(..index30m);
(
Some(total_occupation_15s),
Some(total_occupation_5m),
Some(total_occupation_30m),
)
} else {
(None, None, None)
};
let occupancy_rate = total_occupation / elapsed;
//push the current occupancy rate and the timestamp
metrics
.worker_occupancy_rate_history
.push((total_occupation, elapsed));
(
occupancy_rate,
occupancy_rate_15s,
occupancy_rate_5m,
occupancy_rate_30m,
)
}
}
pub async fn start_child_process(mut cmd: Command, executable: &str) -> Result<Child, Error> {
return cmd
.spawn()
.map_err(|err| tentatively_improve_error(err.into(), executable));
}
pub async fn resolve_job_timeout(
_db: &Pool<Postgres>,
_w_id: &str,
_job_id: Uuid,
custom_timeout_secs: Option<i32>,
) -> (Duration, Option<String>, bool) {
let mut warn_msg: Option<String> = None;
#[cfg(feature = "cloud")]
let cloud_premium_workspace = *CLOUD_HOSTED
&& sqlx::query_scalar!("SELECT premium FROM workspace WHERE id = $1", _w_id)
.fetch_one(_db)
.await
.map_err(|e| {
tracing::error!(%e, "error getting premium workspace for job {_job_id}: {e:#}");
})
.unwrap_or(false);
#[cfg(not(feature = "cloud"))]
let cloud_premium_workspace = false;
// compute global max timeout
let global_max_timeout_duration = if cloud_premium_workspace {
*MAX_TIMEOUT_DURATION * 6 //30mins
} else {
*MAX_TIMEOUT_DURATION
};
match custom_timeout_secs {
Some(timeout_secs)
if Duration::from_secs(timeout_secs as u64) < global_max_timeout_duration =>
{
(Duration::from_secs(timeout_secs as u64), warn_msg, true)
}
Some(timeout_secs) => {
warn_msg = Some(format!("WARNING: Custom job timeout of {timeout_secs} seconds was greater than the maximum timeout. It will be ignored and the max timeout will be used instead"));
tracing::warn!(warn_msg);
(global_max_timeout_duration, warn_msg, false)
}
None => {
// fallback to default timeout or max if not set
let default_timeout = match JOB_DEFAULT_TIMEOUT.read().await.clone() {
None => global_max_timeout_duration,
Some(default_timeout_secs)
if Duration::from_secs(default_timeout_secs as u64)
< global_max_timeout_duration =>
{
Duration::from_secs(default_timeout_secs as u64)
}
Some(default_timeout_secs) => {
warn_msg = Some(format!("WARNING: Default job timeout of {default_timeout_secs} seconds was greater than the maximum timeout. It will be ignored and the global max timeout will be used instead"));
tracing::warn!(warn_msg);
global_max_timeout_duration
}
};
(default_timeout, warn_msg, false)
}
}
}
async fn hash_args(
_db: &DB,
_client: &AuthedClient,
_workspace_id: &str,
v: &Option<Json<HashMap<String, Box<RawValue>>>>,
hasher: &mut sha2::Sha256,
) {
if let Some(Json(hm)) = v {
for k in hm.keys().sorted() {
hasher.update(k.as_bytes());
let arg_value = hm.get(k).unwrap();
#[cfg(feature = "parquet")]
let (_, arg_additions) =
arg_value_hash_additions(_db, _client, _workspace_id, hm.get(k).unwrap()).await;
hasher.update(arg_value.get().as_bytes());
#[cfg(feature = "parquet")]
for (_, arg_addition) in arg_additions {
hasher.update(arg_addition.as_bytes());
}
}
}
}
pub async fn cached_result_path(
db: &DB,
client: &AuthedClient,
job: &QueuedJob,
raw_data: Option<&RawData>,
) -> String {
let mut hasher = sha2::Sha256::new();
hasher.update(&[job.job_kind as u8]);
if let Some(ScriptHash(hash)) = job.script_hash {
hasher.update(&hash.to_le_bytes())
} else {
job.script_path
.as_ref()
.inspect(|x| hasher.update(x.as_bytes()));
match raw_data {
Some(RawData::Flow(data)) => hasher.update(data.raw_flow.get()),
Some(RawData::Script(data)) => hasher.update(&data.code),
_ => {}
}
}
hash_args(db, client, &job.workspace_id, &job.args, &mut hasher).await;
format!("g/results/{:064x}", hasher.finalize())
}
#[cfg(feature = "parquet")]
async fn get_workspace_s3_resource_path(
db: &DB,
client: &AuthedClient,
workspace_id: &str,
storage: Option<&String>,
) -> windmill_common::error::Result<Option<ObjectStoreResource>> {
use windmill_common::{
job_s3_helpers_ee::get_s3_resource_internal, s3_helpers::StorageResourceType,
};
let raw_lfs_opt = if let Some(storage) = storage {
sqlx::query_scalar!(
"SELECT large_file_storage->'secondary_storage'->$2 FROM workspace_settings WHERE workspace_id = $1",
workspace_id,
storage
)
.fetch_optional(db)
.await?
.flatten()
} else {
sqlx::query_scalar!(
"SELECT large_file_storage FROM workspace_settings WHERE workspace_id = $1",
workspace_id
)
.fetch_optional(db)
.await?
.flatten()
};
let raw_lfs_opt = raw_lfs_opt
.map(|val| serde_json::from_value::<LargeFileStorage>(val).ok())
.flatten();
let (rt, path) = match raw_lfs_opt {
Some(LargeFileStorage::S3Storage(s3_storage)) => {
let resource_path = s3_storage.s3_resource_path.trim_start_matches("$res:");
(StorageResourceType::S3, resource_path.to_string())
}
Some(LargeFileStorage::AzureBlobStorage(azure_blob_storage)) => {
let resource_path = azure_blob_storage
.azure_blob_resource_path
.trim_start_matches("$res:");
(StorageResourceType::AzureBlob, resource_path.to_string())
}
Some(LargeFileStorage::S3AwsOidc(s3_aws_oidc)) => {
let resource_path = s3_aws_oidc.s3_resource_path.trim_start_matches("$res:");
(StorageResourceType::S3AwsOidc, resource_path.to_string())
}
Some(LargeFileStorage::AzureWorkloadIdentity(azure)) => {
let resource_path = azure.azure_blob_resource_path.trim_start_matches("$res:");
(
StorageResourceType::AzureWorkloadIdentity,
resource_path.to_string(),
)
}
None => {
return Ok(None);
}
};
let client2 = client.clone();
let token_fn = |audience: String| async move {
client2
.get_id_token(&audience)
.await
.map_err(|e| windmill_common::error::Error::from(e))
};
let s3_resource_value_raw = client
.get_resource_value::<serde_json::Value>(path.as_str())
.await?;
get_s3_resource_internal(rt, s3_resource_value_raw, token_fn)
.await
.map(Some)
}
#[cfg(feature = "parquet")]
async fn arg_value_hash_additions(
db: &DB,
client: &AuthedClient,
workspace_id: &str,
raw_value: &Box<RawValue>,
) -> (Option<String>, HashMap<String, String>) {
let mut result: HashMap<String, String> = HashMap::new();
let parsed_value = serde_json::from_str::<S3Object>(raw_value.get());
let mut storage = None;
if let Ok(s3_object) = parsed_value {
let s3_resource_opt =
get_workspace_s3_resource_path(db, client, workspace_id, s3_object.storage.as_ref())
.await;
storage = s3_object.storage.clone();
if let Some(mut s3_resource) = s3_resource_opt.ok().flatten() {
let etag = get_etag_or_empty(&mut s3_resource, s3_object.clone()).await;
tracing::warn!("Enriching s3 arg value with etag: {:?}", etag);
result.insert(s3_object.s3.clone(), etag.unwrap_or_default()); // TODO: maybe inject a random value to invalidate the cache?
}
}
return (storage, result);
}
#[derive(Deserialize, Serialize)]
struct CachedResource {
expire: i64,
#[serde(skip_serializing_if = "Option::is_none")]
s3_etags: Option<HashMap<String, String>>,
value: Arc<Box<RawValue>>,
storage: Option<String>,
}
impl CachedResource {
fn expired(&self) -> bool {
self.expire <= chrono::Utc::now().timestamp()
}
}
lazy_static! {
/// In-memory cache for resources.
static ref CACHED_RESULTS: Cache<String, Arc<CachedResource>> = Cache::new(1000);
}
pub async fn get_cached_resource_value_if_valid(
_db: &DB,
client: &AuthedClient,
_job_id: &Uuid,
_workspace_id: &str,
cached_res_path: &str,
) -> Option<Arc<Box<RawValue>>> {
let resource = match CACHED_RESULTS
.get_value_or_guard_async(cached_res_path)
.await
{
// check for cache expiration.
Ok(resource) if resource.expired() => {
let _ = CACHED_RESULTS.remove(cached_res_path);
return None;
}
// resource is in cache and not expired, return it.
Ok(resource) => resource,
// resource is not in cache, fetch it from the database.
Err(entry) => match client
.get_resource_value::<CachedResource>(cached_res_path)
.await
.ok()
{
None => return None,
// check for cache expiration.
Some(resource) if resource.expired() => return None,
Some(resource) => {
let resource = Arc::new(resource);
let _ = entry.insert(resource.clone());
resource
}
},
};
#[cfg(feature = "parquet")]
{
let empty_etags = HashMap::new();
let s3_etags = resource.s3_etags.as_ref().unwrap_or(&empty_etags);
let object_store_resource_opt: Option<ObjectStoreResource> = if s3_etags.is_empty() {
None
} else {
get_workspace_s3_resource_path(_db, &client, _workspace_id, resource.storage.as_ref())
.await
.ok()
.flatten()
};
if !s3_etags.is_empty() && object_store_resource_opt.is_none() {
tracing::warn!("Cached result references s3 files that are not retrievable anymore because the workspace S3 resource can't be fetched. Cache will be invalidated");
return None;
}
for (s3_file_key, s3_file_etag) in s3_etags {
if let Some(object_store_resource) = object_store_resource_opt.as_ref() {
let etag = get_etag_or_empty(
object_store_resource,
S3Object {
s3: s3_file_key.clone(),
storage: resource.storage.clone(),
filename: None,
},
)
.await;
if etag.as_ref() != Some(s3_file_etag) {
tracing::warn!("S3 file etag for '{}' has changed. Value from cache is {:?} while current value from S3 is {:?}. Cache will be invalidated", s3_file_key.clone(), s3_file_etag, etag);
return None;
}
}
}
}
Some(resource.value.clone())
}
pub async fn save_in_cache(
db: &Pool<Postgres>,
_client: &AuthedClient,
job: &QueuedJob,
cached_path: String,
r: Arc<Box<RawValue>>,
) {
let expire = chrono::Utc::now().timestamp() + job.cache_ttl.unwrap() as i64;
#[cfg(feature = "parquet")]
let (storage, s3_etags) =
arg_value_hash_additions(db, _client, job.workspace_id.as_str(), &r).await;
#[cfg(feature = "parquet")]
let s3_etags = if s3_etags.is_empty() {
None
} else {
Some(s3_etags)
};
#[cfg(not(feature = "parquet"))]
let (storage, s3_etags) = (None, None);
let store_cache_resource = CachedResource { expire, s3_etags, value: r, storage };
let raw_json = Json(&store_cache_resource);
if let Err(e) = sqlx::query!(
"INSERT INTO resource
(workspace_id, path, value, resource_type, created_by, edited_at)
VALUES ($1, $2, $3, $4, $5, now()) ON CONFLICT (workspace_id, path)
DO UPDATE SET value = $3, edited_at = now()",
job.workspace_id,
&cached_path,
raw_json as Json<&CachedResource>,
"cache",
job.created_by
)
.execute(db)
.await
{
tracing::error!("Error creating cache resource {e:#}")
}
// Cache result in-memory.
CACHED_RESULTS.insert(cached_path, Arc::new(store_cache_resource));
}
fn tentatively_improve_error(err: Error, executable: &str) -> Error {
#[cfg(unix)]
let err_msgs = vec!["os error 2", "os error 3", "No such file or directory"];
#[cfg(windows)]
let err_msgs = vec!["program not found", "os error 2", "os error 3"];
if err_msgs.iter().any(|msg| err.to_string().contains(msg)) {
return Error::internal_err(format!(
"Executable {executable} not found on worker. PATH: {}",
*PATH_ENV
));
}
return Error::ExecutionErr(format!("Error executing {executable}: {err:#}"));
}
pub async fn clean_cache() -> error::Result<()> {
tracing::info!("Started cleaning cache");
tokio::fs::remove_dir_all(ROOT_CACHE_DIR).await?;
tracing::info!("Finished cleaning cache");
Ok(())
}
lazy_static::lazy_static! {
static ref RE_FLOW_ROOT: Regex = Regex::new(r"(?i)(.*?)(?:/branchone-\d+/|/branchall-\d+/|/loop-\d+|/forloop-\d+/)").unwrap();
}
pub fn use_flow_root_path(flow_path: &str) -> String {
if let Some(captures) = RE_FLOW_ROOT.captures(flow_path) {
return captures
.get(1)
.map(|m| format!("{}/flow", m.as_str()))
.unwrap_or_else(|| flow_path.to_string());
} else {
return flow_path.to_string();
}
}
pub fn build_http_client(timeout_duration: std::time::Duration) -> error::Result<Client> {
reqwest::ClientBuilder::new()
.user_agent("windmill/beta")
.timeout(timeout_duration)
.connect_timeout(std::time::Duration::from_secs(10))
.build()
.map_err(|e| Error::internal_err(format!("Error building http client: {e:#}")))
}