add: service functions (closes #5)

src/ib-service.sh

@@ -0,0 +1,56 @@
+
+### service - manage background services
+
+# Install a service.
+# Args:
+#   1: label
+#   2: quiet
+#   3: name
+ib-service-install() {
+  local label=${1:-''}
+  local quiet=${2:-''}
+  local name=${3:-''}
+  local skip=$(ib-ok? stat -t /etc/rc*/???$name 2>> /dev/null)
+  ib-action -l "$label" -s "$skip" $quiet -- update-rc.d "$name" defaults 98 02
+}
+
+# Set the service state.
+# Args:
+#   1: label
+#   2: quiet
+#   3: name
+#   4: state
+ib-service-state() {
+  local label=${1:-"[service] service $3 $4"}
+  local quiet=${2:-''}
+  local name=${3:-''}
+  local state=${4:-''}
+  local status=
+  local skip=false
+  local tried=false
+  local value=0
+
+  if ib-falsy? "$quiet"; then ib-action-start "$label"; fi
+
+  service postgresql status 2&>/dev/null
+  status=$?
+  case "$state" in
+    start) skip=$(ib-ok? [[ $status == 0 ]]);;
+    stop)  skip=$(ib-ok? [[ $status != 0 ]]);;
+    restart) skip=
+  esac
+
+  if ib-falsy? $skip; then
+    tried=true
+    echo -e "\n\$ service $name $state" >> $IB_LOG
+    service $name $state &>> $IB_LOG
+    sleep 0.3
+    service $name status 2&> /dev/null
+    value=$?
+    if [[ "$state" == "stop" ]]; then
+      value=$([[ "$value" != 0 ]] && echo 0);
+    fi
+  fi
+
+  if ib-falsy? "$quiet"; then ib-action-stop "$label" "$tried" "$value"; fi
+}

test/ib-service.sh

@@ -0,0 +1,22 @@
+source "../src/$(basename ${BASH_SOURCE[0]})"
+
+setup() { true; }
+
+teardown() { true; }
+
+# TODO: add service install test
+test-ib-service-install() { true; }
+
+test-ib-service-state() {
+  local status
+
+  ib service-state -q "apache2" "stop"
+
+  service $name status 2&> /dev/null
+  ib-assert-true [[ "$?" != "0" ]]
+
+  ib service-state -q "apache2" "start"
+  service $name status 2&> /dev/null
+  sleep 0.3
+  ib-assert-true [[ "$?" == "0" ]]
+}