refactor: optimize memory usage of blaze

bbmri/docker-compose.yml

@@ -8,8 +8,8 @@ services:
     container_name: bridgehead-bbmri-blaze
     environment:
       BASE_URL: "http://bridgehead-bbmri-blaze:8080"
-      JAVA_TOOL_OPTIONS: "-Xmx4g"
-      LOG_LEVEL: "debug"
+      JAVA_TOOL_OPTIONS: "-Xmx${BLAZE_MEMORY_CAP}m"
+      DB_BLOCK_CACHE_SIZE: $BLAZE_MEMORY_CAP
       ENFORCE_REFERENTIAL_INTEGRITY: "false"
     volumes:
       - "blaze-data:/app/data"

bridgehead

@@ -50,6 +50,7 @@ loadVars() {
 		source /etc/bridgehead/$PROJECT.local.conf || fail_and_report 1 "Found /etc/bridgehead/$PROJECT.local.conf but failed to import"
 	fi
 	fetchVarsFromVaultByFile /etc/bridgehead/$PROJECT.conf || fail_and_report 1 "Unable to fetchVarsFromVaultByFile"
+	setBlazeMemoryCap
 	[ -e ./$PROJECT/vars ] && source ./$PROJECT/vars
 	set +a
 

ccp/docker-compose.yml

@@ -6,7 +6,8 @@ services:
     container_name: bridgehead-ccp-blaze
     environment:
       BASE_URL: "http://bridgehead-ccp-blaze:8080"
-      JAVA_TOOL_OPTIONS: "-Xmx4g"
+      JAVA_TOOL_OPTIONS: "-Xmx${BLAZE_MEMORY_CAP}m"
+      DB_BLOCK_CACHE_SIZE: $BLAZE_MEMORY_CAP
       ENFORCE_REFERENTIAL_INTEGRITY: "false"
     volumes:
       - "blaze-data:/app/data"

lib/functions.sh

@@ -155,6 +155,16 @@ setHostname() {
 	fi
 }
 
+# blaze memory cap should be approximately a quarter of the system memory
+# the memory cap will be applied to both the java heap size and db clock cache
+setBlazeMemoryCap() {
+	if [ -z "$BLAZE_MEMORY_CAP" ]; then
+	   system_memory=$(grep MemTotal /proc/meminfo | grep -Po '\d+');
+	   system_memory_in_mb=$(("$system_memory"/1024));
+	   export BLAZE_MEMORY_CAP=$(("$system_memory_in_mb"/4));
+	fi
+}
+
 # Takes 1) The Backup Directory Path 2) The name of the Service to be backuped
 # Creates 3 Backups: 1) For the past seven days 2) For the current month and 3) for each calendar week
 createEncryptedPostgresBackup(){