feat: Add entrypoint utils and define EntryPointParams (#211)

* feat: Add entrypoint utils and define EntryPointParams

#time 23m


#time 0m

* fix: Make TraceData mandatory

#time 2m

* fix: Make component_id in EntryPointParams optional

#time 1m

substreams/crates/tycho-substreams/src/entrypoint.rs

@@ -0,0 +1,52 @@
+use crate::models::{entry_point_params::TraceData, EntryPoint, EntryPointParams};
+
+fn get_entrypoint_id(target: &[u8], signature: &str) -> String {
+    let target = hex::encode(target);
+    format!("{target}:{signature}")
+}
+
+/// Creates an entrypoint and its parameters.
+pub fn create_entrypoint(
+    target: Vec<u8>,
+    signature: String,
+    component_id: String,
+    trace_data: TraceData,
+) -> (EntryPoint, EntryPointParams) {
+    let entrypoint_id = get_entrypoint_id(&target, &signature);
+    let entrypoint = EntryPoint {
+        id: entrypoint_id.clone(),
+        target,
+        signature,
+        component_id: component_id.clone(),
+    };
+    let entrypoint_params = EntryPointParams {
+        entrypoint_id,
+        component_id: Some(component_id),
+        trace_data: Some(trace_data),
+    };
+    (entrypoint, entrypoint_params)
+}
+
+// Adds EntryPointParams associated with an already existing Entrypoint.
+pub fn add_entrypoint_params(
+    target: Vec<u8>,
+    signature: String,
+    trace_data: TraceData,
+    component_id: Option<String>,
+) -> EntryPointParams {
+    EntryPointParams {
+        entrypoint_id: get_entrypoint_id(&target, &signature),
+        component_id,
+        trace_data: Some(trace_data),
+    }
+}
+
+// Adds a component to an existing Entrypoint.
+pub fn add_component_to_entrypoint(
+    target: Vec<u8>,
+    signature: String,
+    component_id: String,
+) -> EntryPoint {
+    let entrypoint_id = get_entrypoint_id(&target, &signature);
+    EntryPoint { id: entrypoint_id, target, signature, component_id }
+}