Merge pull request #50 from project-flogo/ruleaction-readme

Ruleaction readme

Author: jpark800

ruleaction/README.md

@@ -0,0 +1,77 @@
+## RuleAction
+RuleAction is a flogo action which allows events to be injected into the rules engine via a flogo trigger.
+
+### Configuration
+RuleAction configuration contains 2 parts, settings and resources.
+
+#### settings
+
+| Name   |  Type   | Description   |
+|:-----------|:--------|:--------------|
+| id | string | id is referenced by an element in another section of flogo configuration such as trigger handler action's id |
+| rulesessionURI | uri | Uri that starts with 'res://rulesession:'. It's referenced in the resources section  |
+| tds | array | Tuple definitions |
+
+
+#### tds
+| Name   |  Type   | Description   |
+|:-----------|:--------|:--------------|
+| name | string | Tuple type name |
+| properties | array | Properties of the tuple |
+
+
+#### properties
+| Name   |  Type   | Description   |
+|:-----------|:--------|:--------------|
+| name | string | Property name |
+| type | string | Data type of the property |
+| pk-index | int | Tuple key order. If -1, not used as part of tuple key |
+
+#### resources
+
+| Name   |  Type   | Description   |
+|:-----------|:--------|:--------------|
+| id | string | id is referenced by an element in another section of flogo configuration such as action settings's rulesessionURI |
+| data | object | metadata and rule defintions |
+
+#### metadata
+It contains an array of input element comprised of 2 parameters, values and tupletype.
+
+| Name   |  Type   | Description   |
+|:-----------|:--------|:--------------|
+| values | string | Tuple values |
+| tupletype | string | Tupple type that the values parameter adheres to |
+
+#### rules
+| Name   |  Type   | Description   |
+|:-----------|:--------|:--------------|
+| name | string | Name of the rule |
+| conditions | array | Conditions that the rule evaluates given input |
+| actionFunction | string | Rule action function to be fired when conditions are true. The function must exist in functions.go |
+
+#### conditions
+
+| Name   |  Type   | Description   |
+|:-----------|:--------|:--------------|
+| name | string | Name of the condition |
+| identifiers | array | Tuple types the condition evaluates upon |
+| evaluator | string | Function that envaluates the condition. The function must exist in functions.go |
+
+
+### Usage
+
+Upon a configuration of flogo.json containing ruleaction configuration and creation of functions.go which contains the evaluator and actionFunction implementations, place flogo.json in a folder of your choice to run 
+```
+flogo create -f flogo.json myrules
+cp functions.go myrules/src
+cd myrules
+flogo build
+```
+To run the flogo rules binary,
+```
+bin/myrules
+```
+
+
+### Examples
+For examples, see [rules flogo examples](https://github.com/project-flogo/rules/tree/master/examples/flogo).