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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,282 @@ | ||
| var parse = function(obj, path) { | ||
| if (typeof path == 'string') path = path.split('.'); | ||
| if (Array.isArray(path) && path.length) { | ||
| var localPath = path.shift(); | ||
| if (obj[localPath] || typeof obj[localPath] === 'boolean') { | ||
| return parse(obj[localPath], path); | ||
| } else { | ||
| return 'not set'; | ||
| } | ||
| } else { | ||
| return obj; | ||
| } | ||
| }; | ||
|
|
||
| var transform = function(val, transformation) { | ||
| if (transformation == 'DATE') { | ||
| return new Date(val); | ||
| } else if (transformation == 'INTEGER') { | ||
| return parseInt(val); | ||
| } else if (transformation == 'STRING') { | ||
| return val.toString(); | ||
| } else if (transformation == 'DAYSFROM') { | ||
| // Return the number of days between the date and now | ||
| var now = new Date(); | ||
| var then = new Date(val); | ||
| var timeDiff = then.getTime() - now.getTime(); | ||
| var diff = Math.round(timeDiff / (1000 * 3600 * 24)); | ||
| return diff; | ||
| } else if (transformation == 'COUNT') { | ||
| return val.length; | ||
| } else if (transformation == 'EACH') { | ||
| return val; | ||
| } else if (transformation == 'TOLOWERCASE') { | ||
| return val.toLowerCase(); | ||
| } else { | ||
| return val; | ||
| } | ||
| }; | ||
|
|
||
| function evaluateConditions(obj, conditions){ | ||
| var preVal = {}; // place to hold the result evaluated till now | ||
| for (let i in conditions){ | ||
| let condition = conditions[i]; | ||
| let value = validate(obj,condition); | ||
|
|
||
| if (!condition.logical){ | ||
| // no logical operation means | ||
| // first element of the conditions | ||
| if ( i == 0){ | ||
| // first element in the condition list,so set the preVal | ||
| preVal = value; | ||
| } | ||
| // error as no logical condition and not the first element | ||
| else{ | ||
| //err | ||
| console.error('No logical operator found and this is not the first element'); | ||
| } | ||
| } | ||
| else{ | ||
| if ( i == 0){ | ||
| // first element in the condition list,and with logical operation. Error case | ||
| console.error('logical operator found in first element'); | ||
| } | ||
| else{ | ||
| // this is not first element in array and also logical op is here. use the preVal and evaluate it | ||
| if(preVal){ | ||
| //as this is not first element in array preVal should be set. | ||
| //other wise the condition is not properly formed as AND OR are binary ops | ||
| if( condition.logical === 'OR'){ | ||
| preVal.status = preVal.status || value.status; | ||
| } | ||
| else if (condition.logical === 'AND'){ | ||
| preVal.status = preVal.status && value.status; | ||
| } | ||
| else{ | ||
| // unsupported operator. | ||
| console.error('wrong logical operator mentioned'); | ||
| } | ||
| preVal.message = preVal.message.concat(', ',value.message); | ||
| } | ||
| else{ | ||
| //condition is not properly formed as AND OR are binary ops | ||
| console.error('condition is malformed'); | ||
| } | ||
| } | ||
| } | ||
| } | ||
|
|
||
| return preVal; | ||
| } | ||
|
|
||
| var validate = function(obj, condition) { | ||
| var result = 0; | ||
| var message = []; | ||
| var override = false; | ||
|
|
||
| // Extract the values for the conditions | ||
|
|
||
| if (condition.property) { | ||
| var conditionResult = 0; | ||
| condition.parsed = parse(obj, condition.property); | ||
|
|
||
| // Transform the property if required | ||
| if (condition.transform) { | ||
| condition.parsed = transform(condition.parsed, condition.transform); | ||
| } | ||
|
|
||
| // Compare the property with the operator | ||
| if (condition.parsed === 'not set'){ | ||
| conditionResult = 2; | ||
| message.push(`${condition.property}: not set to any value`); | ||
| } | ||
| else if (condition.op) { | ||
| if (condition.op == 'EQ') { | ||
| if (condition.parsed == condition.value) { | ||
| message.push(`${condition.property}: ${condition.parsed} matched: ${condition.value}`); | ||
| } else { | ||
| conditionResult = 2; | ||
| message.push(`${condition.property}: ${condition.parsed} did not match: ${condition.value}`); | ||
| } | ||
| } else if (condition.op == 'GT') { | ||
| if (condition.parsed > condition.value) { | ||
| message.push(`${condition.property}: count of ${condition.parsed} was greater than: ${condition.value}`); | ||
| } else { | ||
| conditionResult = 2; | ||
| message.push(`${condition.property}: count of ${condition.parsed} was not greater than: ${condition.value}`); | ||
| } | ||
| } else if (condition.op == 'NE') { | ||
| if (condition.parsed !== condition.value) { | ||
| message.push(`${condition.property}: ${condition.parsed} is not: ${condition.value}`); | ||
| } else { | ||
| conditionResult = 2; | ||
| message.push(`${condition.property}: ${condition.parsed} is: ${condition.value}`); | ||
| } | ||
| } else if (condition.op == 'MATCHES') { | ||
| var userRegex = RegExp(condition.value); | ||
| if (userRegex.test(condition.parsed)) { | ||
| message.push(`${condition.property}: ${condition.parsed} matches the regex: ${condition.value}`); | ||
| } else { | ||
| conditionResult = 2; | ||
| message.push(`${condition.property}: ${condition.parsed} does not match the regex: ${condition.value}`); | ||
| } | ||
| } else if (condition.op == 'EXISTS') { | ||
| if (condition.parsed !== 'not set') { | ||
| message.push(`${condition.property}: set to ${condition.parsed}`); | ||
| } else { | ||
| conditionResult = 2; | ||
| message.push(`${condition.property}: ${condition.parsed}`); | ||
| } | ||
| } else if (condition.op == 'ISTRUE') { | ||
| if (condition.parsed) { | ||
| message.push(`${condition.property} is true`); | ||
| } else { | ||
| conditionResult = 2; | ||
| message.push(`${condition.property} is false`); | ||
| } | ||
| } else if (condition.op == 'ISFALSE') { | ||
| if (!condition.parsed) { | ||
| message.push(`${condition.property} is false`); | ||
| } else { | ||
| conditionResult = 2; | ||
| message.push(`${condition.property} is true`); | ||
| } | ||
| } else if (condition.op == 'CONTAINS') { | ||
| if (condition.parsed.includes(condition.value)) { | ||
| message.push(`${condition.property}: ${condition.value} found in ${condition.parsed}`); | ||
| } else { | ||
| conditionResult = 2; | ||
| message.push(`${condition.value} not found in ${condition.parsed}`); | ||
| } | ||
| } | ||
| } else if (condition.transform && condition.transform == 'EACH' && condition.conditions) { | ||
| // Recurse into the same function | ||
| var subProcessed = []; | ||
| condition.parsed.forEach(function(parsed) { | ||
| subProcessed.push(validate(parsed, condition.conditions)); | ||
| }); | ||
| subProcessed.forEach(function(sub) { | ||
| if (sub.status) conditionResult = sub.status; | ||
| if (sub.message) message.push(sub.message); | ||
| }); | ||
| } | ||
| if (condition.invert) conditionResult = (conditionResult ? 0 : 2); | ||
|
|
||
| if (condition.override && !conditionResult) override = true; | ||
| if (conditionResult) result = conditionResult; | ||
| } | ||
|
|
||
|
|
||
| if (result && override) result = 0; | ||
|
|
||
| if (!message.length) { | ||
| message = ['The resource matched all required conditions']; | ||
| } | ||
|
|
||
| return { | ||
| status: result, | ||
| message: message.join(', ') | ||
| }; | ||
| }; | ||
|
|
||
| var asl = function(source, input, resourceMap, callback) { | ||
| if (!source || !input) return callback('No source or input provided'); | ||
| if (!input.apis || !input.apis[0]) return callback('No APIs provided for input'); | ||
| if (!input.conditions || !input.conditions.length) return callback('No conditions provided for input'); | ||
|
|
||
| // Split apis into service:api | ||
| // TODO: support conditions that use different APIs | ||
| var service = input.conditions[0].service; | ||
| var api = input.conditions[0].api; | ||
| var resourcePath; | ||
| if (resourceMap && | ||
| resourceMap[service] && | ||
| resourceMap[service][api]) { | ||
| resourcePath = resourceMap[service][api]; | ||
| } | ||
|
|
||
| if (!source[service]) return callback(`Source data did not contain service: ${service}`); | ||
| if (!source[service][api]) return callback(`Source data did not contain API: ${api}`); | ||
|
|
||
| var results = []; | ||
|
|
||
| for (var region in source[service][api]) { | ||
| var regionVal = source[service][api][region]; | ||
| if (typeof regionVal !== 'object') continue; | ||
| if (regionVal.err) { | ||
| results.push({ | ||
| status: 3, | ||
| message: regionVal.err.message || 'Error', | ||
| region: region | ||
| }); | ||
| } else if (regionVal.data) { | ||
| // It's an array, loop | ||
| regionVal.data.forEach(function(regionData) { | ||
| var validated = evaluateConditions(regionData, input.conditions); | ||
| var parsedResource = parse(regionData, resourcePath); | ||
| if (typeof parsedResource !== 'string') parsedResource = null; | ||
|
|
||
| results.push({ | ||
| status: validated.status, | ||
| resource: parsedResource, | ||
| message: validated.message, | ||
| region: region | ||
| }); | ||
| }); | ||
| } else { | ||
| for (var resourceName in regionVal) { | ||
| var resourceObj = regionVal[resourceName]; | ||
| if (resourceObj.err) { | ||
| results.push({ | ||
| status: 3, | ||
| resource: resourceName, | ||
| message: resourceObj.err.message || 'Error', | ||
| region: region | ||
| }); | ||
| } else if (!resourceObj.data) { | ||
| results.push({ | ||
| status: 3, | ||
| resource: resourceName, | ||
| message: 'No data returned', | ||
| region: region | ||
| }); | ||
| } else { | ||
| var validated = evaluateConditions(resourceObj.data, input.conditions); | ||
| var parsedResource = parse(resourceObj.data, resourcePath); | ||
| if (typeof parsedResource !== 'string') parsedResource = null; | ||
|
|
||
| results.push({ | ||
| status: validated.status, | ||
| resource: parsedResource ? parsedResource : resourceName, | ||
| message: validated.message, | ||
| region: region | ||
| }); | ||
| } | ||
| } | ||
| } | ||
| } | ||
|
|
||
| callback(null, results, source[service][api]); | ||
| }; | ||
|
|
||
| module.exports = asl; |
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