add support for get_run_id() as magic variable

cloudslang-entities/src/main/java/io/cloudslang/lang/entities/bindings/ScriptFunction.java

@@ -47,7 +47,9 @@ public enum ScriptFunction {
 
     GET_USER_ID("get_user_id"),
 
-    GET_WORKER_GROUP("get_worker_group");
+    GET_WORKER_GROUP("get_worker_group"),
+
+    GET_RUN_ID("get_run_id");
 
     private final String value;
 

cloudslang-entities/src/main/java/io/cloudslang/lang/entities/constants/Regex.java

@@ -56,6 +56,7 @@ public class Regex {
     public static final String CS_TO_LOWER_REGEX = "cs_to_lower\\((.+?)\\)";
     public static final String GET_USER_ID_REGEX = "get_user_id()";
     public static final String GET_WORKER_GROUP_REGEX = "get_worker_group()";
+    public static final String GET_RUN_ID_REGEX = "get_run_id()";
 
     //////////////// description
     public static final String DESCRIPTION_START_LINE = "(\\s*)(#!!)(([^#])(.*))*";

cloudslang-entities/src/main/java/io/cloudslang/lang/entities/utils/ExpressionUtils.java

@@ -40,6 +40,7 @@
 import static io.cloudslang.lang.entities.constants.Regex.GET_SP_VAR_REGEX_WITH_SINGLE_QUOTES;
 import static io.cloudslang.lang.entities.constants.Regex.GET_USER_ID_REGEX;
 import static io.cloudslang.lang.entities.constants.Regex.GET_WORKER_GROUP_REGEX;
+import static io.cloudslang.lang.entities.constants.Regex.GET_RUN_ID_REGEX;
 import static io.cloudslang.lang.entities.constants.Regex.SYSTEM_PROPERTY_REGEX_DOUBLE_QUOTE;
 import static io.cloudslang.lang.entities.constants.Regex.SYSTEM_PROPERTY_REGEX_SINGLE_QUOTE;
 import static io.cloudslang.lang.entities.constants.Regex.SYSTEM_PROPERTY_REGEX_WITHOUT_QUOTES;
@@ -99,6 +100,7 @@ private ExpressionUtils() {
         addPattern(ScriptFunction.CS_TO_UPPER, CS_TO_UPPER_REGEX);
         addPattern(ScriptFunction.GET_USER_ID, GET_USER_ID_REGEX);
         addPattern(ScriptFunction.GET_WORKER_GROUP, GET_WORKER_GROUP_REGEX);
+        addPattern(ScriptFunction.GET_RUN_ID, GET_RUN_ID_REGEX);
     }
 
     private static void addPattern(ScriptFunction function, String regex) {

cloudslang-runtime/src/main/java/io/cloudslang/lang/runtime/RuntimeConstants.java

@@ -24,5 +24,6 @@ public interface RuntimeConstants {
     String EXECUTION_ID = "run_id";
     String USER_ID = "get_user_id()";
     String WORKER_GROUP = "get_worker_group()";
+    String RUN_ID = "get_run_id()";
 
 }

cloudslang-runtime/src/main/java/io/cloudslang/lang/runtime/services/ScriptsService.java

@@ -48,7 +48,8 @@ public void init() throws IOException {
                 ScriptFunction.CS_TO_LOWER,
                 ScriptFunction.GET_SP_VAR,
                 ScriptFunction.GET_USER_ID,
-                ScriptFunction.GET_WORKER_GROUP
+                ScriptFunction.GET_WORKER_GROUP,
+                ScriptFunction.GET_RUN_ID
         );
 
         for (ScriptFunction function: list) {

cloudslang-runtime/src/main/java/io/cloudslang/lang/runtime/steps/CsMagicVariableHelper.java

@@ -33,6 +33,7 @@ public Map<String, Value> getGlobalContext(ExecutionRuntimeServices executionRun
         globalContext.put(RuntimeConstants.USER_ID, ValueFactory.create(userId));
         globalContext.put(RuntimeConstants.WORKER_GROUP, ValueFactory.create(workerGroup == null ?
                                                                              RAS_OPERATOR_PATH : workerGroup));
+        globalContext.put(RuntimeConstants.RUN_ID, ValueFactory.create(executionId));
         return Collections.unmodifiableMap(globalContext);
     }
 }

cloudslang-runtime/src/main/resources/scripts/get_run_id.py

@@ -0,0 +1,6 @@
+def get_run_id():
+    try:
+        value = get_from_smaller_context("get_run_id()")
+    except NameError:
+        value = globals().get("get_run_id()")
+    return "" if value is None else value