Use HashMap in Rust

Author: aumetra

libwasmvm/src/cache.rs

@@ -1,4 +1,4 @@
-use std::collections::BTreeSet;
+use std::collections::{BTreeSet, HashMap};
 use std::convert::TryInto;
 use std::panic::{catch_unwind, AssertUnwindSafe};
 use std::str::from_utf8;
@@ -433,7 +433,7 @@ impl From<cosmwasm_vm::PerModuleMetrics> for PerModuleMetrics {
 
 #[derive(Serialize)]
 struct PinnedMetrics {
-    per_module: Vec<(Checksum, PerModuleMetrics)>,
+    per_module: HashMap<Checksum, PerModuleMetrics>,
 }
 
 impl From<cosmwasm_vm::PinnedMetrics> for PinnedMetrics {

types/types.go

@@ -197,7 +197,7 @@ type PerModuleMetrics struct {
 }
 
 type PinnedMetrics struct {
-	PerModule map[string]PerModuleMetrics `json:"per_module" msgpack:",asarray"`
+	PerModule map[string]PerModuleMetrics `msgpack:"per_module"`
 }
 
 func (pm *PinnedMetrics) UnmarshalMessagePack(data []byte) error {