Move the is_changeset_schedule_type function to td_util for reuse

Summary: So we can reuse it in `ranker` in next diff

Reviewed By: bayarmunkh

Differential Revision: D53050703

fbshipit-source-id: 08d6b7f76933d2121a5f0c5508af6066423737fc

td_util/Cargo.toml

@@ -9,6 +9,7 @@ argfile = "0.1.5"
 clap = {version = "4.1.4"}
 derive_more = "0.99.3"
 equivalent = "1.0.0"
+lazy_static = "1.4.0"
 static_interner.version = "0.1"
 # @oss-disable: static_interner.path = "../../buck2/shed/static_interner"
 static_interner.default-features = false

td_util/src/schedules.rs

@@ -10,13 +10,20 @@
 //! The schedule types available.
 
 use std::cmp::Eq;
+use std::collections::HashSet;
 use std::hash::Hash;
 
 use clap::ValueEnum;
+use lazy_static::lazy_static;
 use parse_display::Display;
 use serde::Deserialize;
 use serde::Serialize;
 
+lazy_static! {
+    static ref CHANGESET_SCHEDULE_TYPES: HashSet<&'static str> =
+        HashSet::from(["diff", "landcastle", "master", "postcommit", "relbranch"]);
+}
+
 #[derive(
     ValueEnum,
     Serialize,
@@ -44,3 +51,9 @@ pub enum ScheduleType {
     #[serde(rename = "landcastle")]
     Landcastle, // Should this be just "land"?
 }
+
+/// Mobile build TDs use schedule_type to decide whether we need to run build for changeset (e.g. diff and landcastle)
+/// See UTD implementation: <https://fburl.com/code/wfps6pag>
+pub fn is_changeset_schedule_type(schedule_type: ScheduleType) -> bool {
+    CHANGESET_SCHEDULE_TYPES.contains(schedule_type.to_string().as_str())
+}