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Implement MSC3966: Add a push rule condition to search for a value in an array. (#15045)

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The `exact_event_property_contains` condition can be used to
search for a value inside of an array.
This commit is contained in:
Patrick Cloke 2023-02-14 14:02:19 -05:00 • committed by GitHub
parent 157c571f3e
commit 119e0795a5
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9 changed files with 176 additions and 42 deletions
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65
rust/src/push/evaluator.rs
View file

@ -14,6 +14,7 @@
use std::collections::{BTreeMap, BTreeSet};
use crate::push::JsonValue;
use anyhow::{Context, Error};
use lazy_static::lazy_static;
use log::warn;
@ -63,7 +64,7 @@ impl RoomVersionFeatures {
pub struct PushRuleEvaluator {
/// A mapping of "flattened" keys to simple JSON values in the event, e.g.
/// includes things like "type" and "content.msgtype".
flattened_keys: BTreeMap<String, SimpleJsonValue>,
flattened_keys: BTreeMap<String, JsonValue>,
/// The "content.body", if any.
body: String,
@ -87,7 +88,7 @@ pub struct PushRuleEvaluator {
/// The related events, indexed by relation type. Flattened in the same manner as
/// `flattened_keys`.
related_events_flattened: BTreeMap<String, BTreeMap<String, SimpleJsonValue>>,
related_events_flattened: BTreeMap<String, BTreeMap<String, JsonValue>>,
/// If msc3664, push rules for related events, is enabled.
related_event_match_enabled: bool,
@ -101,6 +102,9 @@ pub struct PushRuleEvaluator {
/// If MSC3758 (exact_event_match push rule condition) is enabled.
msc3758_exact_event_match: bool,
/// If MSC3966 (exact_event_property_contains push rule condition) is enabled.
msc3966_exact_event_property_contains: bool,
}
#[pymethods]
@ -109,21 +113,22 @@ impl PushRuleEvaluator {
#[allow(clippy::too_many_arguments)]
#[new]
pub fn py_new(
flattened_keys: BTreeMap<String, SimpleJsonValue>,
flattened_keys: BTreeMap<String, JsonValue>,
has_mentions: bool,
user_mentions: BTreeSet<String>,
room_mention: bool,
room_member_count: u64,
sender_power_level: Option<i64>,
notification_power_levels: BTreeMap<String, i64>,
related_events_flattened: BTreeMap<String, BTreeMap<String, SimpleJsonValue>>,
related_events_flattened: BTreeMap<String, BTreeMap<String, JsonValue>>,
related_event_match_enabled: bool,
room_version_feature_flags: Vec<String>,
msc3931_enabled: bool,
msc3758_exact_event_match: bool,
msc3966_exact_event_property_contains: bool,
) -> Result<Self, Error> {
let body = match flattened_keys.get("content.body") {
Some(SimpleJsonValue::Str(s)) => s.clone(),
Some(JsonValue::Value(SimpleJsonValue::Str(s))) => s.clone(),
_ => String::new(),
};
@ -141,6 +146,7 @@ impl PushRuleEvaluator {
room_version_feature_flags,
msc3931_enabled,
msc3758_exact_event_match,
msc3966_exact_event_property_contains,
})
}
@ -263,6 +269,9 @@ impl PushRuleEvaluator {
KnownCondition::RelatedEventMatch(event_match) => {
self.match_related_event_match(event_match, user_id)?
}
KnownCondition::ExactEventPropertyContains(exact_event_match) => {
self.match_exact_event_property_contains(exact_event_match)?
}
KnownCondition::IsUserMention => {
if let Some(uid) = user_id {
self.user_mentions.contains(uid)
@ -345,7 +354,7 @@ impl PushRuleEvaluator {
return Ok(false);
};
let haystack = if let Some(SimpleJsonValue::Str(haystack)) =
let haystack = if let Some(JsonValue::Value(SimpleJsonValue::Str(haystack))) =
self.flattened_keys.get(&*event_match.key)
{
haystack
@ -377,7 +386,9 @@ impl PushRuleEvaluator {
let value = &exact_event_match.value;
let haystack = if let Some(haystack) = self.flattened_keys.get(&*exact_event_match.key) {
let haystack = if let Some(JsonValue::Value(haystack)) =
self.flattened_keys.get(&*exact_event_match.key)
{
haystack
} else {
return Ok(false);
@ -441,11 +452,12 @@ impl PushRuleEvaluator {
return Ok(false);
};
let haystack = if let Some(SimpleJsonValue::Str(haystack)) = event.get(&**key) {
haystack
} else {
return Ok(false);
};
let haystack =
if let Some(JsonValue::Value(SimpleJsonValue::Str(haystack))) = event.get(&**key) {
haystack
} else {
return Ok(false);
};
// For the content.body we match against "words", but for everything
// else we match against the entire value.
@ -459,6 +471,29 @@ impl PushRuleEvaluator {
compiled_pattern.is_match(haystack)
}
/// Evaluates a `exact_event_property_contains` condition. (MSC3758)
fn match_exact_event_property_contains(
&self,
exact_event_match: &ExactEventMatchCondition,
) -> Result<bool, Error> {
// First check if the feature is enabled.
if !self.msc3966_exact_event_property_contains {
return Ok(false);
}
let value = &exact_event_match.value;
let haystack = if let Some(JsonValue::Array(haystack)) =
self.flattened_keys.get(&*exact_event_match.key)
{
haystack
} else {
return Ok(false);
};
Ok(haystack.contains(&**value))
}
/// Match the member count against an 'is' condition
/// The `is` condition can be things like '>2', '==3' or even just '4'.
fn match_member_count(&self, is: &str) -> Result<bool, Error> {
@ -488,7 +523,7 @@ fn push_rule_evaluator() {
let mut flattened_keys = BTreeMap::new();
flattened_keys.insert(
"content.body".to_string(),
SimpleJsonValue::Str("foo bar bob hello".to_string()),
JsonValue::Value(SimpleJsonValue::Str("foo bar bob hello".to_string())),
);
let evaluator = PushRuleEvaluator::py_new(
flattened_keys,
@ -503,6 +538,7 @@ fn push_rule_evaluator() {
vec![],
true,
true,
true,
)
.unwrap();
@ -519,7 +555,7 @@ fn test_requires_room_version_supports_condition() {
let mut flattened_keys = BTreeMap::new();
flattened_keys.insert(
"content.body".to_string(),
SimpleJsonValue::Str("foo bar bob hello".to_string()),
JsonValue::Value(SimpleJsonValue::Str("foo bar bob hello".to_string())),
);
let flags = vec![RoomVersionFeatures::ExtensibleEvents.as_str().to_string()];
let evaluator = PushRuleEvaluator::py_new(
@ -535,6 +571,7 @@ fn test_requires_room_version_supports_condition() {
flags,
true,
true,
true,
)
.unwrap();

33
rust/src/push/mod.rs
View file

@ -58,7 +58,7 @@ use anyhow::{Context, Error};
use log::warn;
use pyo3::exceptions::PyTypeError;
use pyo3::prelude::*;
use pyo3::types::{PyBool, PyLong, PyString};
use pyo3::types::{PyBool, PyList, PyLong, PyString};
use pythonize::{depythonize, pythonize};
use serde::de::Error as _;
use serde::{Deserialize, Serialize};
@ -280,6 +280,35 @@ impl<'source> FromPyObject<'source> for SimpleJsonValue {
}
}
/// A JSON values (list, string, int, boolean, or null).
#[derive(Serialize, Deserialize, Debug, Clone, PartialEq, Eq)]
#[serde(untagged)]
pub enum JsonValue {
Array(Vec<SimpleJsonValue>),
Value(SimpleJsonValue),
}
impl<'source> FromPyObject<'source> for JsonValue {
fn extract(ob: &'source PyAny) -> PyResult<Self> {
if let Ok(l) = <PyList as pyo3::PyTryFrom>::try_from(ob) {
match l.iter().map(SimpleJsonValue::extract).collect() {
Ok(a) => Ok(JsonValue::Array(a)),
Err(e) => Err(PyTypeError::new_err(format!(
"Can't convert to JsonValue::Array: {}",
e
))),
}
} else if let Ok(v) = SimpleJsonValue::extract(ob) {
Ok(JsonValue::Value(v))
} else {
Err(PyTypeError::new_err(format!(
"Can't convert from {} to JsonValue",
ob.get_type().name()?
)))
}
}
}
/// A condition used in push rules to match against an event.
///
/// We need this split as `serde` doesn't give us the ability to have a
@ -303,6 +332,8 @@ pub enum KnownCondition {
ExactEventMatch(ExactEventMatchCondition),
#[serde(rename = "im.nheko.msc3664.related_event_match")]
RelatedEventMatch(RelatedEventMatchCondition),
#[serde(rename = "org.matrix.msc3966.exact_event_property_contains")]
ExactEventPropertyContains(ExactEventMatchCondition),
#[serde(rename = "org.matrix.msc3952.is_user_mention")]
IsUserMention,
#[serde(rename = "org.matrix.msc3952.is_room_mention")]