[FAB-3185] move historyDatabase to ledger in core.yaml

historyDatabase is under 'state' section in core.yaml. 'history'
should be a peer of 'state', with the config option being called
something like enableHistoryDatabase. This will allow for other history
config options distinct from state config options.

This is the default core.yaml with the new history section and
enableHistoryDatabase config option:

ledger:

  blockchain:

  state:
    # stateDatabase - options are "goleveldb", "CouchDB"
    # goleveldb - default state database stored in goleveldb.
    # CouchDB - store state database in CouchDB
    stateDatabase: goleveldb
    couchDBConfig:
       couchDBAddress: 127.0.0.1:5984
       username:
       password:
       # Number of retries for CouchDB errors
       maxRetries: 3
       # Number of retries for CouchDB errors during peer startup
       maxRetriesOnStartup: 10
       # CouchDB request timeout (unit: duration, e.g. 20s)
       requestTimeout: 20s

    # Limit on the number of records to return per query
    queryLimit: 10000

  history:
    # enableHistoryDatabase - options are true or false
    # Indicates if the history of key updates should be stored in goleveldb
    enableHistoryDatabase: true

The history section in chaincodetest.yaml is not used, update it for
consistency.

Change-Id: I15ac35e280dbf194647ca0c866fcbee515af8a68
Signed-off-by: Chris Elder <chris.elder@us.ibm.com>

core/chaincode/chaincodetest.yaml

@@ -435,14 +435,14 @@ ledger:
        # CouchDB request timeout (unit: duration, e.g. 20s)
        requestTimeout: 20s
 
-
-    # historyDatabase - options are true or false
-    # Indicates if the history of key updates should be stored in goleveldb
-    historyDatabase: true
-
     # Limit on the number of records to return per query
     queryLimit: 10000
 
+  history:
+    # enableHistoryDatabase - options are true or false
+    # Indicates if the history of key updates should be stored in goleveldb
+    enableHistoryDatabase: true
+
 
 ################################################################################
 #

core/ledger/kvledger/history/historydb/historyleveldb/historyleveldb_test.go

@@ -195,7 +195,7 @@ func TestHistoryDisabled(t *testing.T) {
 	env := NewTestHistoryEnv(t)
 	defer env.cleanup()
 
-	viper.Set("ledger.state.historyDatabase", "false")
+	viper.Set("ledger.history.enableHistoryDatabase", "false")
 
 	//no need to pass blockstore into history executore, it won't be used in this test
 	qhistory, err := env.testHistoryDB.NewHistoryQueryExecutor(nil)

core/ledger/kvledger/history/historydb/historyleveldb/pkg_test.go

@@ -45,7 +45,7 @@ type levelDBLockBasedHistoryEnv struct {
 
 func NewTestHistoryEnv(t *testing.T) *levelDBLockBasedHistoryEnv {
 
-	viper.Set("ledger.state.historyDatabase", "true")
+	viper.Set("ledger.history.enableHistoryDatabase", "true")
 
 	blockStorageTestEnv := newBlockStorageTestEnv(t)
 

core/ledger/ledgerconfig/ledger_config.go

@@ -99,7 +99,7 @@ func GetQueryLimit() int {
 
 //IsHistoryDBEnabled exposes the historyDatabase variable
 func IsHistoryDBEnabled() bool {
-	return viper.GetBool("ledger.state.historyDatabase")
+	return viper.GetBool("ledger.history.enableHistoryDatabase")
 }
 
 // IsQueryReadsHashingEnabled enables or disables computing of hash

core/ledger/ledgerconfig/ledger_config_test.go

@@ -69,15 +69,15 @@ func TestIsHistoryDBEnabledDefault(t *testing.T) {
 func TestIsHistoryDBEnabledTrue(t *testing.T) {
 	setUpCoreYAMLConfig()
 	defer ledgertestutil.ResetConfigToDefaultValues()
-	viper.Set("ledger.state.historyDatabase", true)
+	viper.Set("ledger.history.enableHistoryDatabase", true)
 	updatedValue := IsHistoryDBEnabled()
 	testutil.AssertEquals(t, updatedValue, true) //test config returns true
 }
 
 func TestIsHistoryDBEnabledFalse(t *testing.T) {
 	setUpCoreYAMLConfig()
 	defer ledgertestutil.ResetConfigToDefaultValues()
-	viper.Set("ledger.state.historyDatabase", false)
+	viper.Set("ledger.history.enableHistoryDatabase", false)
 	updatedValue := IsHistoryDBEnabled()
 	testutil.AssertEquals(t, updatedValue, false) //test config returns false
 }

core/ledger/testutil/test_util.go

@@ -84,7 +84,7 @@ func SetupCoreYAMLConfig(coreYamlPath string) {
 func ResetConfigToDefaultValues() {
 	//reset to defaults
 	viper.Set("ledger.state.stateDatabase", "goleveldb")
-	viper.Set("ledger.state.historyDatabase", false)
+	viper.Set("ledger.history.enableHistoryDatabase", false)
 }
 
 // SetLogLevel sets up log level

peer/core.yaml

@@ -394,9 +394,10 @@ ledger:
        # CouchDB request timeout (unit: duration, e.g. 20s)
        requestTimeout: 20s
 
-    # historyDatabase - options are true or false
-    # Indicates if the history of key updates should be stored in goleveldb
-    historyDatabase: true
-
     # Limit on the number of records to return per query
     queryLimit: 10000
+
+  history:
+    # enableHistoryDatabase - options are true or false
+    # Indicates if the history of key updates should be stored in goleveldb
+    enableHistoryDatabase: true