Fix check-sanity + save-state /w disabled services

This adds a mapping for all process names described in BASE_SERVICES
and TARGET_SERVICES, allowing check-sanity to skip checking for running
processes of services that are disabled according to ENABLED_SERVICES.
It also updates grenade.sh and save-state to only dump databases that
exist.  These changes allow grenade to pass against deployments that
have disabled non-essential services in devstack.

Change-Id: Ic4b2bab88b12f33f939b9bf7aca47e930d799f3f
Closes-bug: #1355499

check-sanity

@@ -26,6 +26,8 @@ source $GRENADE_DIR/grenaderc
 # We need the OS_ credentials
 source $TARGET_DEVSTACK_DIR/openrc
 source $TARGET_DEVSTACK_DIR/functions
+source $TARGET_DEVSTACK_DIR/localrc
+
 
 function is_a_service {
     local name=$1
@@ -79,13 +81,34 @@ function test_all_enabled_services {
     fi
 }
 
+# For a given process name, resolve the corresponding devstack service
+# name as it would appear in ENABLED_SERVICES.
+function process_to_service {
+    case "$1" in
+      "nova-api") echo "n-api" ;;
+      "nova-conductor") echo "n-cond" ;;
+      "nova-compute") echo "n-cpu" ;;
+      "keystone") echo "key" ;;
+      "glance-api") echo "g-api" ;;
+      "cinder-api") echo "c-api" ;;
+      "swift-object-server") echo "s-obj" ;;
+      "swift-proxy-server") echo "s-proxy" ;;
+      *) echo "$1" ;;
+    esac
+}
+
 test_all_enabled_services
 
 # all the services should actually be running that we expect
 NOT_RUNNING=""
-for name in ${TARGET_SERVICES}; do
+RUNNING=""
-    if ! is_running ${name}; then
+for proc_name in ${TARGET_SERVICES}; do
-        NOT_RUNNING="$NOT_RUNNING $name"
+    if is_service_enabled "$(process_to_service $proc_name)" ; then
+        if ! is_running ${proc_name}; then
+            NOT_RUNNING="$NOT_RUNNING $proc_name"
+        else
+            RUNNING="$RUNNING $proc_name"
+        fi
     fi
 done
 
@@ -94,7 +117,7 @@ if [[ -n "$NOT_RUNNING" ]]; then
     $GRENADE_DIR/tools/worlddump.py -d $LOGDIR
     exit 1
 else
-    echo "the following services are running: $TARGET_SERVICES"
+    echo "the following services are running: $RUNNING"
 fi
 
 echo "*********************************************************************"

grenade.sh

@@ -380,7 +380,9 @@ if [[ "$RUN_TARGET" == "True" ]]; then
         mongodump --db ceilometer --out $SAVE_DIR/ceilometer-dump.$TARGET_RELEASE
     fi
     for db in $MYSQL_SERVICES ; do
-        mysqldump -uroot -p$MYSQL_PASSWORD $db >$SAVE_DIR/$db.sql.$TARGET_RELEASE
+        if mysql -uroot -p$MYSQL_PASSWORD -c $db -e ''; then
+            mysqldump -uroot -p$MYSQL_PASSWORD $db >$SAVE_DIR/$db.sql.$TARGET_RELEASE
+        fi
     done
     neutron_db_names=$(mysql -uroot -p$MYSQL_PASSWORD -e "show databases;" | grep neutron || :)
     for neutron_db in $neutron_db_names; do

save-state

@@ -48,7 +48,9 @@ elif grep -q 'connection *= *mongo' /etc/ceilometer/ceilometer.conf; then
     mongodump --db ceilometer --out $SAVE_DIR/ceilometer-dump.$BASE_RELEASE
 fi
 for db in $MYSQL_SERVICES ; do
-    mysqldump -uroot -p$MYSQL_PASSWORD $db >$SAVE_DIR/$db.sql.$BASE_RELEASE
+    if mysql -uroot -p$MYSQL_PASSWORD -c $db -e ''; then
+        mysqldump -uroot -p$MYSQL_PASSWORD $db >$SAVE_DIR/$db.sql.$BASE_RELEASE
+    fi
 done
 neutron_db_names=$(mysql -uroot -p$MYSQL_PASSWORD -e "show databases;" | grep neutron || :)
 for neutron_db in $neutron_db_names; do