From aad7ff3de0466beb584723a37fb48d4d81609c7b Mon Sep 17 00:00:00 2001
From: poktblade <baaspoolsllc@gmail.com>
Date: Sat, 21 May 2022 23:23:28 -0500
Subject: [PATCH] Change to RW lock for chains

---
 app/common_test.go                          |  2 +-
 app/config.go                               |  4 ++--
 x/pocketcore/types/hostedBlockchain.go      | 14 +++++++-------
 x/pocketcore/types/hostedBlockchain_test.go | 12 ++++++------
 4 files changed, 16 insertions(+), 16 deletions(-)

diff --git a/app/common_test.go b/app/common_test.go
index 16513ae2..0ca9e77a 100644
--- a/app/common_test.go
+++ b/app/common_test.go
@@ -291,7 +291,7 @@ func GetApp(logger log.Logger, db dbm.DB, traceWriter io.Writer) *PocketCoreApp
 			ID:  sdk.PlaceholderHash,
 			URL: sdk.PlaceholderURL,
 		}}
-		p := NewPocketCoreApp(GenState, getInMemoryKeybase(), getInMemoryTMClient(), &pocketTypes.HostedBlockchains{M: m, L: sync.Mutex{}}, logger, db, false, 5000000, bam.SetPruning(store.PruneNothing))
+		p := NewPocketCoreApp(GenState, getInMemoryKeybase(), getInMemoryTMClient(), &pocketTypes.HostedBlockchains{M: m, L: sync.RWMutex{}}, logger, db, false, 5000000, bam.SetPruning(store.PruneNothing))
 		return p
 	}
 	return creator(logger, db, traceWriter)
diff --git a/app/config.go b/app/config.go
index e6ec79ed..5ff248e7 100644
--- a/app/config.go
+++ b/app/config.go
@@ -675,7 +675,7 @@ func NewHostedChains(generate bool) *types.HostedBlockchains {
 	// return the map
 	return &types.HostedBlockchains{
 		M: m,
-		L: sync.Mutex{},
+		L: sync.RWMutex{},
 	}
 }
 
@@ -711,7 +711,7 @@ func generateChainsJson(chainsPath string) *types.HostedBlockchains {
 		m[chain.ID] = chain
 	}
 	// return the map
-	return &types.HostedBlockchains{M: m, L: sync.Mutex{}}
+	return &types.HostedBlockchains{M: m, L: sync.RWMutex{}}
 }
 
 const (
diff --git a/x/pocketcore/types/hostedBlockchain.go b/x/pocketcore/types/hostedBlockchain.go
index 2a9250dd..fc339a14 100644
--- a/x/pocketcore/types/hostedBlockchain.go
+++ b/x/pocketcore/types/hostedBlockchain.go
@@ -20,13 +20,13 @@ type BasicAuth struct {
 // HostedBlockchains" - An object that represents the local hosted non-native blockchains
 type HostedBlockchains struct {
 	M map[string]HostedBlockchain // M[addr] -> addr, url
-	L sync.Mutex
+	L sync.RWMutex
 }
 
 // "Contains" - Checks to see if the hosted chain is within the HostedBlockchains object
 func (c *HostedBlockchains) Contains(id string) bool {
-	c.L.Lock()
-	defer c.L.Unlock()
+	c.L.RLock()
+	defer c.L.RUnlock()
 	// quick map check
 	_, found := c.M[id]
 	return found
@@ -34,8 +34,8 @@ func (c *HostedBlockchains) Contains(id string) bool {
 
 // "GetChainURL" - Returns the url or error of the hosted blockchain using the hex network identifier
 func (c *HostedBlockchains) GetChain(id string) (chain HostedBlockchain, err sdk.Error) {
-	c.L.Lock()
-	defer c.L.Unlock()
+	c.L.RLock()
+	defer c.L.RUnlock()
 	// map check
 	res, found := c.M[id]
 	if !found {
@@ -55,8 +55,8 @@ func (c *HostedBlockchains) GetChainURL(id string) (url string, err sdk.Error) {
 
 // "Validate" - Validates the hosted blockchain object
 func (c *HostedBlockchains) Validate() error {
-	c.L.Lock()
-	defer c.L.Unlock()
+	c.L.RLock()
+	defer c.L.RUnlock()
 	// loop through all of the chains
 	for _, chain := range c.M {
 		// validate not empty
diff --git a/x/pocketcore/types/hostedBlockchain_test.go b/x/pocketcore/types/hostedBlockchain_test.go
index 8d18bf60..842bbdc4 100644
--- a/x/pocketcore/types/hostedBlockchain_test.go
+++ b/x/pocketcore/types/hostedBlockchain_test.go
@@ -17,7 +17,7 @@ func TestHostedBlockchains_GetChainURL(t *testing.T) {
 	}
 	hb := HostedBlockchains{
 		M: map[string]HostedBlockchain{testHostedBlockchain.ID: testHostedBlockchain},
-		L: sync.Mutex{},
+		L: sync.RWMutex{},
 	}
 	u, err := hb.GetChainURL(ethereum)
 	assert.Nil(t, err)
@@ -34,7 +34,7 @@ func TestHostedBlockchains_ContainsFromString(t *testing.T) {
 	}
 	hb := HostedBlockchains{
 		M: map[string]HostedBlockchain{testHostedBlockchain.ID: testHostedBlockchain},
-		L: sync.Mutex{},
+		L: sync.RWMutex{},
 	}
 	assert.True(t, hb.Contains(ethereum))
 	assert.False(t, hb.Contains(bitcoin))
@@ -66,22 +66,22 @@ func TestHostedBlockchains_Validate(t *testing.T) {
 	}{
 		{
 			name:     "Invalid HostedBlockchain, no URL",
-			hc:       &HostedBlockchains{M: map[string]HostedBlockchain{HCNoURL.URL: HCNoURL}, L: sync.Mutex{}},
+			hc:       &HostedBlockchains{M: map[string]HostedBlockchain{HCNoURL.URL: HCNoURL}, L: sync.RWMutex{}},
 			hasError: true,
 		},
 		{
 			name:     "Invalid HostedBlockchain, no URL",
-			hc:       &HostedBlockchains{M: map[string]HostedBlockchain{HCNoHash.URL: HCNoHash}, L: sync.Mutex{}},
+			hc:       &HostedBlockchains{M: map[string]HostedBlockchain{HCNoHash.URL: HCNoHash}, L: sync.RWMutex{}},
 			hasError: true,
 		},
 		{
 			name:     "Invalid HostedBlockchain, invalid ID",
-			hc:       &HostedBlockchains{M: map[string]HostedBlockchain{HCInvalidHash.URL: HCInvalidHash}, L: sync.Mutex{}},
+			hc:       &HostedBlockchains{M: map[string]HostedBlockchain{HCInvalidHash.URL: HCInvalidHash}, L: sync.RWMutex{}},
 			hasError: true,
 		},
 		{
 			name:     "Valid HostedBlockchain",
-			hc:       &HostedBlockchains{M: map[string]HostedBlockchain{testHostedBlockchain.ID: testHostedBlockchain}, L: sync.Mutex{}},
+			hc:       &HostedBlockchains{M: map[string]HostedBlockchain{testHostedBlockchain.ID: testHostedBlockchain}, L: sync.RWMutex{}},
 			hasError: false,
 		},
 	}