mirror of
https://github.com/juspay/hyperswitch.git
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327 lines
11 KiB
Rust
327 lines
11 KiB
Rust
//! Utility macros
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#[allow(missing_docs)]
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#[macro_export]
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macro_rules! newtype_impl {
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($is_pub:vis, $name:ident, $ty_path:path) => {
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impl core::ops::Deref for $name {
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type Target = $ty_path;
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fn deref(&self) -> &Self::Target {
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&self.0
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}
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}
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impl core::ops::DerefMut for $name {
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fn deref_mut(&mut self) -> &mut Self::Target {
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&mut self.0
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}
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}
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impl From<$ty_path> for $name {
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fn from(ty: $ty_path) -> Self {
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Self(ty)
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}
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}
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impl $name {
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pub fn into_inner(self) -> $ty_path {
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self.0
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}
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}
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};
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}
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#[allow(missing_docs)]
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#[macro_export]
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macro_rules! newtype {
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($is_pub:vis $name:ident = $ty_path:path) => {
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$is_pub struct $name(pub $ty_path);
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$crate::newtype_impl!($is_pub, $name, $ty_path);
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};
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($is_pub:vis $name:ident = $ty_path:path, derives = ($($trt:path),*)) => {
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#[derive($($trt),*)]
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$is_pub struct $name(pub $ty_path);
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$crate::newtype_impl!($is_pub, $name, $ty_path);
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};
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}
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/// Use this to ensure that the corresponding
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/// openapi route has been implemented in the openapi crate
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#[macro_export]
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macro_rules! openapi_route {
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($route_name: ident) => {{
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#[cfg(feature = "openapi")]
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use openapi::routes::$route_name as _;
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$route_name
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}};
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}
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#[allow(missing_docs)]
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#[macro_export]
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macro_rules! fallback_reverse_lookup_not_found {
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($a:expr,$b:expr) => {
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match $a {
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Ok(res) => res,
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Err(err) => {
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router_env::logger::error!(reverse_lookup_fallback = ?err);
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match err.current_context() {
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errors::StorageError::ValueNotFound(_) => return $b,
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errors::StorageError::DatabaseError(data_err) => {
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match data_err.current_context() {
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diesel_models::errors::DatabaseError::NotFound => return $b,
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_ => return Err(err)
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}
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}
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_=> return Err(err)
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}
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}
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};
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};
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}
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/// Collects names of all optional fields that are `None`.
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/// This is typically useful for constructing error messages including a list of all missing fields.
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#[macro_export]
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macro_rules! collect_missing_value_keys {
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[$(($key:literal, $option:expr)),+] => {
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{
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let mut keys: Vec<&'static str> = Vec::new();
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$(
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if $option.is_none() {
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keys.push($key);
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}
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)*
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keys
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}
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};
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}
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/// Implements the `ToSql` and `FromSql` traits on a type to allow it to be serialized/deserialized
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/// to/from JSON data in the database.
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#[macro_export]
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macro_rules! impl_to_sql_from_sql_json {
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($type:ty, $diesel_type:ty) => {
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#[allow(unused_qualifications)]
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impl diesel::serialize::ToSql<$diesel_type, diesel::pg::Pg> for $type {
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fn to_sql<'b>(
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&'b self,
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out: &mut diesel::serialize::Output<'b, '_, diesel::pg::Pg>,
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) -> diesel::serialize::Result {
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let value = serde_json::to_value(self)?;
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// the function `reborrow` only works in case of `Pg` backend. But, in case of other backends
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// please refer to the diesel migration blog:
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// https://github.com/Diesel-rs/Diesel/blob/master/guide_drafts/migration_guide.md#changed-tosql-implementations
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<serde_json::Value as diesel::serialize::ToSql<
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$diesel_type,
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diesel::pg::Pg,
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>>::to_sql(&value, &mut out.reborrow())
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}
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}
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#[allow(unused_qualifications)]
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impl diesel::deserialize::FromSql<$diesel_type, diesel::pg::Pg> for $type {
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fn from_sql(
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bytes: <diesel::pg::Pg as diesel::backend::Backend>::RawValue<'_>,
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) -> diesel::deserialize::Result<Self> {
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let value = <serde_json::Value as diesel::deserialize::FromSql<
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$diesel_type,
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diesel::pg::Pg,
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>>::from_sql(bytes)?;
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Ok(serde_json::from_value(value)?)
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}
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}
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};
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($type: ty) => {
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$crate::impl_to_sql_from_sql_json!($type, diesel::sql_types::Json);
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$crate::impl_to_sql_from_sql_json!($type, diesel::sql_types::Jsonb);
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};
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}
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mod id_type {
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/// Defines an ID type.
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#[macro_export]
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macro_rules! id_type {
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($type:ident, $doc:literal, $diesel_type:ty, $max_length:expr, $min_length:expr) => {
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#[doc = $doc]
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#[derive(
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Clone,
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Hash,
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PartialEq,
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Eq,
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serde::Serialize,
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serde::Deserialize,
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diesel::expression::AsExpression,
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)]
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#[diesel(sql_type = $diesel_type)]
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pub struct $type($crate::id_type::LengthId<$max_length, $min_length>);
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};
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($type:ident, $doc:literal) => {
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$crate::id_type!(
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$type,
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$doc,
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diesel::sql_types::Text,
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{ $crate::consts::MAX_ALLOWED_MERCHANT_REFERENCE_ID_LENGTH },
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{ $crate::consts::MIN_REQUIRED_MERCHANT_REFERENCE_ID_LENGTH }
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);
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};
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}
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/// Implements common methods on the specified ID type.
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#[macro_export]
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macro_rules! impl_id_type_methods {
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($type:ty, $field_name:literal) => {
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impl $type {
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/// Get the string representation of the ID type.
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pub fn get_string_repr(&self) -> &str {
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&self.0 .0 .0
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}
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}
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};
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}
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/// Implements the `Debug` trait on the specified ID type.
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#[macro_export]
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macro_rules! impl_debug_id_type {
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($type:ty) => {
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impl core::fmt::Debug for $type {
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fn fmt(&self, f: &mut core::fmt::Formatter<'_>) -> core::fmt::Result {
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f.debug_tuple(stringify!($type))
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.field(&self.0 .0 .0)
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.finish()
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}
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}
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};
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}
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/// Implements the `TryFrom<Cow<'static, str>>` trait on the specified ID type.
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#[macro_export]
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macro_rules! impl_try_from_cow_str_id_type {
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($type:ty, $field_name:literal) => {
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impl TryFrom<std::borrow::Cow<'static, str>> for $type {
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type Error = error_stack::Report<$crate::errors::ValidationError>;
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fn try_from(value: std::borrow::Cow<'static, str>) -> Result<Self, Self::Error> {
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use error_stack::ResultExt;
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let merchant_ref_id = $crate::id_type::LengthId::from(value).change_context(
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$crate::errors::ValidationError::IncorrectValueProvided {
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field_name: $field_name,
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},
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)?;
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Ok(Self(merchant_ref_id))
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}
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}
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};
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}
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/// Implements the `Default` trait on the specified ID type.
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#[macro_export]
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macro_rules! impl_default_id_type {
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($type:ty, $prefix:literal) => {
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impl Default for $type {
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fn default() -> Self {
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Self($crate::generate_ref_id_with_default_length($prefix))
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}
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}
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};
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}
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/// Implements the `GenerateId` trait on the specified ID type.
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#[macro_export]
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macro_rules! impl_generate_id_id_type {
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($type:ty, $prefix:literal) => {
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impl $crate::id_type::GenerateId for $type {
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fn generate() -> Self {
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Self($crate::generate_ref_id_with_default_length($prefix))
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}
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}
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};
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}
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/// Implements the `SerializableSecret` trait on the specified ID type.
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#[macro_export]
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macro_rules! impl_serializable_secret_id_type {
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($type:ty) => {
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impl masking::SerializableSecret for $type {}
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};
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}
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/// Implements the `ToSql` and `FromSql` traits on the specified ID type.
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#[macro_export]
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macro_rules! impl_to_sql_from_sql_id_type {
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($type:ty, $diesel_type:ty, $max_length:expr, $min_length:expr) => {
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impl<DB> diesel::serialize::ToSql<$diesel_type, DB> for $type
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where
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DB: diesel::backend::Backend,
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$crate::id_type::LengthId<$max_length, $min_length>:
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diesel::serialize::ToSql<$diesel_type, DB>,
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{
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fn to_sql<'b>(
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&'b self,
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out: &mut diesel::serialize::Output<'b, '_, DB>,
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) -> diesel::serialize::Result {
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self.0.to_sql(out)
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}
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}
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impl<DB> diesel::deserialize::FromSql<$diesel_type, DB> for $type
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where
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DB: diesel::backend::Backend,
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$crate::id_type::LengthId<$max_length, $min_length>:
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diesel::deserialize::FromSql<$diesel_type, DB>,
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{
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fn from_sql(value: DB::RawValue<'_>) -> diesel::deserialize::Result<Self> {
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$crate::id_type::LengthId::<$max_length, $min_length>::from_sql(value).map(Self)
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}
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}
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};
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($type:ty) => {
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$crate::impl_to_sql_from_sql_id_type!(
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$type,
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diesel::sql_types::Text,
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{ $crate::consts::MAX_ALLOWED_MERCHANT_REFERENCE_ID_LENGTH },
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{ $crate::consts::MIN_REQUIRED_MERCHANT_REFERENCE_ID_LENGTH }
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);
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};
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}
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/// Implements the `Queryable` trait on the specified ID type.
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#[macro_export]
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macro_rules! impl_queryable_id_type {
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($type:ty, $diesel_type:ty) => {
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impl<DB> diesel::Queryable<$diesel_type, DB> for $type
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where
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DB: diesel::backend::Backend,
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Self: diesel::deserialize::FromSql<$diesel_type, DB>,
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{
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type Row = Self;
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fn build(row: Self::Row) -> diesel::deserialize::Result<Self> {
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Ok(row)
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}
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}
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};
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($type:ty) => {
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$crate::impl_queryable_id_type!($type, diesel::sql_types::Text);
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};
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}
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}
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/// Get the type name for a type
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#[macro_export]
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macro_rules! type_name {
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($type:ty) => {
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std::any::type_name::<$type>()
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.rsplit("::")
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.nth(1)
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.unwrap_or_default();
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};
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}
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