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event outputParser && tests

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This commit is contained in:
Marek Kotewicz 2015-02-03 15:08:19 +01:00
parent 9d9c23e315
commit 03faec9d41
8 changed files with 288 additions and 136 deletions
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28
dist/ethereum.js vendored
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@ -409,7 +409,7 @@ var addEventsToContract = function (contract, desc, address) {
var impl = function () {
var params = Array.prototype.slice.call(arguments);
var signature = abi.eventSignatureFromAscii(e.name);
var event = eventImpl(address, signature, e);
var event = eventImpl.inputParser(address, signature, e);
var o = event.apply(null, params);
return web3.eth.watch(o);
};
@ -504,6 +504,16 @@ module.exports = contract;
var abi = require('./abi');
var utils = require('./utils');
/// filter inputs array && returns only indexed (or not) inputs
/// @param inputs array
/// @param bool if result should be an array of indexed params on not
/// @returns array of (not?) indexed params
var filterInputs = function (inputs, indexed) {
return inputs.filter(function (current) {
return inputs.indexed === indexed;
});
};
var inputWithName = function (inputs, name) {
var index = utils.findIndex(inputs, function (input) {
return input.name === name;
@ -519,7 +529,7 @@ var inputWithName = function (inputs, name) {
var indexedParamsToTopics = function (event, indexed) {
// sort keys?
return Object.keys(indexed).map(function (key) {
var inputs = [inputWithName(event.inputs, key)];
var inputs = [inputWithName(filterInputs(event.inputs, true), key)];
var value = indexed[key];
if (value instanceof Array) {
@ -531,7 +541,7 @@ var indexedParamsToTopics = function (event, indexed) {
});
};
var implementationOfEvent = function (address, signature, event) {
var inputParser = function (address, signature, event) {
// valid options are 'earliest', 'latest', 'offset' and 'max', as defined for 'eth.watch'
return function (indexed, options) {
@ -546,7 +556,17 @@ var implementationOfEvent = function (address, signature, event) {
};
};
module.exports = implementationOfEvent;
var outputParser = function (event) {
return function (output) {
};
};
module.exports = {
inputParser: inputParser,
outputParser: outputParser
};
},{"./abi":1,"./utils":11}],5:[function(require,module,exports){

6
dist/ethereum.js.map vendored
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2
dist/ethereum.min.js vendored
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2
lib/contract.js
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@ -138,7 +138,7 @@ var addEventsToContract = function (contract, desc, address) {
var impl = function () {
var params = Array.prototype.slice.call(arguments);
var signature = abi.eventSignatureFromAscii(e.name);
var event = eventImpl(address, signature, e);
var event = eventImpl.inputParser(address, signature, e);
var o = event.apply(null, params);
return web3.eth.watch(o);
};

56
lib/event.js
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@ -23,6 +23,16 @@
var abi = require('./abi');
var utils = require('./utils');
/// filter inputs array && returns only indexed (or not) inputs
/// @param inputs array
/// @param bool if result should be an array of indexed params on not
/// @returns array of (not?) indexed params
var filterInputs = function (inputs, indexed) {
return inputs.filter(function (current) {
return current.indexed === indexed;
});
};
var inputWithName = function (inputs, name) {
var index = utils.findIndex(inputs, function (input) {
return input.name === name;
@ -38,7 +48,7 @@ var inputWithName = function (inputs, name) {
var indexedParamsToTopics = function (event, indexed) {
// sort keys?
return Object.keys(indexed).map(function (key) {
var inputs = [inputWithName(event.inputs, key)];
var inputs = [inputWithName(filterInputs(event.inputs, true), key)];
var value = indexed[key];
if (value instanceof Array) {
@ -50,7 +60,7 @@ var indexedParamsToTopics = function (event, indexed) {
});
};
var implementationOfEvent = function (address, signature, event) {
var inputParser = function (address, signature, event) {
// valid options are 'earliest', 'latest', 'offset' and 'max', as defined for 'eth.watch'
return function (indexed, options) {
@ -65,5 +75,45 @@ var implementationOfEvent = function (address, signature, event) {
};
};
module.exports = implementationOfEvent;
var getArgumentsObject = function (inputs, indexed, notIndexed) {
var indexedCopy = indexed.slice();
var notIndexedCopy = notIndexed.slice();
return inputs.reduce(function (acc, current) {
var value;
if (current.indexed)
value = indexed.splice(0, 1)[0];
else
value = notIndexed.splice(0, 1)[0];
acc[current.name] = value;
return acc;
}, {});
};
var outputParser = function (event) {
return function (output) {
var result = {
event: utils.extractDisplayName(event.name),
number: output.number
};
var indexedOutputs = filterInputs(event.inputs, true);
var indexedData = "0x" + output.topic.slice(1, output.topic.length).map(function (topic) { return topic.slice(2); }).join("");
var indexedRes = abi.formatOutput(indexedOutputs, indexedData);
var notIndexedOutputs = filterInputs(event.inputs, false);
var notIndexedRes = abi.formatOutput(notIndexedOutputs, output.data);
result.args = getArgumentsObject(event.inputs, indexedRes, notIndexedRes);
return result;
};
};
module.exports = {
inputParser: inputParser,
outputParser: outputParser
};

125
test/event.inputParser.js Normal file
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@ -0,0 +1,125 @@
var assert = require('assert');
var event = require('../lib/event.js');
var f = require('../lib/formatters.js');
describe('event', function () {
describe('inputParser', function () {
it('should create basic filter input object', function () {
// given
var address = '0x012345';
var signature = '0x987654';
var e = {
name: 'Event',
inputs: [{"name":"a","type":"uint256","indexed":true},{"name":"b","type":"hash256","indexed":false}]
};
// when
var impl = event.inputParser(address, signature, e);
var result = impl();
// then
assert.equal(result.address, address);
assert.equal(result.topic.length, 1);
assert.equal(result.topic[0], signature);
});
it('should create filter input object with options', function () {
// given
var address = '0x012345';
var signature = '0x987654';
var options = {
earliest: 1,
latest: 2,
offset: 3,
max: 4
};
var e = {
name: 'Event',
inputs: [{"name":"a","type":"uint256","indexed":true},{"name":"b","type":"hash256","indexed":false}]
};
// when
var impl = event.inputParser(address, signature, e);
var result = impl({}, options);
// then
assert.equal(result.address, address);
assert.equal(result.topic.length, 1);
assert.equal(result.topic[0], signature);
assert.equal(result.earliest, options.earliest);
assert.equal(result.latest, options.latest);
assert.equal(result.offset, options.offset);
assert.equal(result.max, options.max);
});
it('should create filter input object with indexed params', function () {
// given
var address = '0x012345';
var signature = '0x987654';
var options = {
earliest: 1,
latest: 2,
offset: 3,
max: 4
};
var e = {
name: 'Event',
inputs: [{"name":"a","type":"uint256","indexed":true},{"name":"b","type":"hash256","indexed":false}]
};
// when
var impl = event.inputParser(address, signature, e);
var result = impl({a: 4}, options);
// then
assert.equal(result.address, address);
assert.equal(result.topic.length, 2);
assert.equal(result.topic[0], signature);
assert.equal(result.topic[1], f.formatInputInt(4));
assert.equal(result.earliest, options.earliest);
assert.equal(result.latest, options.latest);
assert.equal(result.offset, options.offset);
assert.equal(result.max, options.max);
});
it('should create filter input object with an array of indexed params', function () {
// given
var address = '0x012345';
var signature = '0x987654';
var options = {
earliest: 1,
latest: 2,
offset: 3,
max: 4
};
var e = {
name: 'Event',
inputs: [{"name":"a","type":"uint256","indexed":true},{"name":"b","type":"hash256","indexed":false}]
};
// when
var impl = event.inputParser(address, signature, e);
var result = impl({a: [4, 69]}, options);
// then
assert.equal(result.address, address);
assert.equal(result.topic.length, 2);
assert.equal(result.topic[0], signature);
assert.equal(result.topic[1][0], f.formatInputInt(4));
assert.equal(result.topic[1][1], f.formatInputInt(69));
assert.equal(result.earliest, options.earliest);
assert.equal(result.latest, options.latest);
assert.equal(result.offset, options.offset);
assert.equal(result.max, options.max);
});
});
});

124
test/event.js
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@ -1,124 +0,0 @@
var assert = require('assert');
var event = require('../lib/event.js');
var f = require('../lib/formatters.js');
describe('event', function () {
it('should create basic filter input object', function () {
// given
var address = '0x012345';
var signature = '0x987654';
var e = {
name: 'Event',
inputs: [{"name":"a","type":"uint256","indexed":true},{"name":"b","type":"hash256","indexed":false}]
};
// when
var impl = event(address, signature, e);
var result = impl();
// then
assert.equal(result.address, address);
assert.equal(result.topic.length, 1);
assert.equal(result.topic[0], signature);
});
it('should create filter input object with options', function () {
// given
var address = '0x012345';
var signature = '0x987654';
var options = {
earliest: 1,
latest: 2,
offset: 3,
max: 4
};
var e = {
name: 'Event',
inputs: [{"name":"a","type":"uint256","indexed":true},{"name":"b","type":"hash256","indexed":false}]
};
// when
var impl = event(address, signature, e);
var result = impl({}, options);
// then
assert.equal(result.address, address);
assert.equal(result.topic.length, 1);
assert.equal(result.topic[0], signature);
assert.equal(result.earliest, options.earliest);
assert.equal(result.latest, options.latest);
assert.equal(result.offset, options.offset);
assert.equal(result.max, options.max);
});
it('should create filter input object with indexed params', function () {
// given
var address = '0x012345';
var signature = '0x987654';
var options = {
earliest: 1,
latest: 2,
offset: 3,
max: 4
};
var e = {
name: 'Event',
inputs: [{"name":"a","type":"uint256","indexed":true},{"name":"b","type":"hash256","indexed":false}]
};
// when
var impl = event(address, signature, e);
var result = impl({a: 4}, options);
// then
assert.equal(result.address, address);
assert.equal(result.topic.length, 2);
assert.equal(result.topic[0], signature);
assert.equal(result.topic[1], f.formatInputInt(4));
assert.equal(result.earliest, options.earliest);
assert.equal(result.latest, options.latest);
assert.equal(result.offset, options.offset);
assert.equal(result.max, options.max);
});
it('should create filter input object with an array of indexed params', function () {
// given
var address = '0x012345';
var signature = '0x987654';
var options = {
earliest: 1,
latest: 2,
offset: 3,
max: 4
};
var e = {
name: 'Event',
inputs: [{"name":"a","type":"uint256","indexed":true},{"name":"b","type":"hash256","indexed":false}]
};
// when
var impl = event(address, signature, e);
var result = impl({a: [4, 69]}, options);
// then
assert.equal(result.address, address);
assert.equal(result.topic.length, 2);
assert.equal(result.topic[0], signature);
assert.equal(result.topic[1][0], f.formatInputInt(4));
assert.equal(result.topic[1][1], f.formatInputInt(69));
assert.equal(result.earliest, options.earliest);
assert.equal(result.latest, options.latest);
assert.equal(result.offset, options.offset);
assert.equal(result.max, options.max);
});
});

81
test/event.outputParser.js Normal file
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@ -0,0 +1,81 @@
var assert = require('assert');
var event = require('../lib/event.js');
describe('event', function () {
describe('outputParser', function () {
it('should parse basic event output object', function () {
// given
var output = {
"address":"0x78dfc5983baecf65f73e3de3a96cee24e6b7981e",
"data":"0x000000000000000000000000000000000000000000000000000000000000004b",
"number":2,
"topic":[
"0x6e61ef44ac2747ff8b84d353a908eb8bd5c3fb118334d57698c5cfc7041196ad",
"0x0000000000000000000000000000000000000000000000000000000000000001"
]
};
var e = {
name: 'Event',
inputs: [{"name":"a","type":"bool","indexed":true},{"name":"b","type":"uint256","indexed":false}]
};
// when
var impl = event.outputParser(e);
var result = impl(output);
// then
assert.equal(result.event, 'Event');
assert.equal(result.number, 2);
assert.equal(Object.keys(result.args).length, 2);
assert.equal(result.args.a, true);
assert.equal(result.args.b, 75);
});
it('should parse event output object arguments in correct order', function () {
// given
var output = {
"address":"0x78dfc5983baecf65f73e3de3a96cee24e6b7981e",
"data": "0x" +
"000000000000000000000000000000000000000000000000000000000000004b" +
"000000000000000000000000000000000000000000000000000000000000004c" +
"0000000000000000000000000000000000000000000000000000000000000001",
"number":3,
"topic":[
"0x6e61ef44ac2747ff8b84d353a908eb8bd5c3fb118334d57698c5cfc7041196ad",
"0x0000000000000000000000000000000000000000000000000000000000000001",
"0x0000000000000000000000000000000000000000000000000000000000000005"
]
};
var e = {
name: 'Event2',
inputs: [
{"name":"a","type":"bool","indexed":true},
{"name":"b","type":"int","indexed":false},
{"name":"c","type":"int","indexed":false},
{"name":"d","type":"int","indexed":true},
{"name":"e","type":"bool","indexed":false}
]
};
// when
var impl = event.outputParser(e);
var result = impl(output);
// then
assert.equal(result.event, 'Event2');
assert.equal(result.number, 3);
assert.equal(Object.keys(result.args).length, 5);
assert.equal(result.args.a, true);
assert.equal(result.args.b, 75);
assert.equal(result.args.c, 76);
assert.equal(result.args.d, 5);
assert.equal(result.args.e, true);
});
});
});