Github user merrimanr commented on a diff in the pull request:

    https://github.com/apache/incubator-metron/pull/489#discussion_r109211360
  
    --- Diff: 
metron-interface/metron-config/e2e/sensor-config-readonly/sensor-config-readonly.po.ts
 ---
    @@ -0,0 +1,125 @@
    +/**
    + * Licensed to the Apache Software Foundation (ASF) under one
    + * or more contributor license agreements.  See the NOTICE file
    + * distributed with this work for additional information
    + * regarding copyright ownership.  The ASF licenses this file
    + * to you under the Apache License, Version 2.0 (the
    + * "License"); you may not use this file except in compliance
    + * with the License.  You may obtain a copy of the License at
    + *
    + *     http://www.apache.org/licenses/LICENSE-2.0
    + *
    + * Unless required by applicable law or agreed to in writing, software
    + * distributed under the License is distributed on an "AS IS" BASIS,
    + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
    + * See the License for the specific language governing permissions and
    + * limitations under the License.
    + */
    +import { browser, element, by, protractor } from 'protractor/globals';
    +import {changeURL, waitForElementVisibility} from '../utils/e2e_util';
    +
    +export class SensorDetailsPage {
    +
    +    private enableButton;
    +    private disableButton;
    +    private startButton;
    +    private stopButton;
    +
    +    constructor() {
    +        this.enableButton = 
element(by.cssContainingText('metron-config-sensor-parser-readonly .btn', 
'ENABLE'));
    +        this.disableButton = 
element(by.cssContainingText('metron-config-sensor-parser-readonly .btn', 
'DISABLE'));
    +        this.startButton = 
element(by.cssContainingText('metron-config-sensor-parser-readonly .btn', 
'START'));
    +        this.stopButton = 
element(by.cssContainingText('metron-config-sensor-parser-readonly .btn', 
'STOP'));
    +    }
    +
    +    clickToggleShowMoreLess(text: string, index: number) {
    +        return element.all(by.linkText(text)).get(index).click().then(() 
=> {
    +            browser.sleep(1000);
    +            return true;
    +        })
    +    }
    +
    +    closePane(name: string) {
    +        return element(by.css('metron-config-sensor-parser-readonly 
.fa-times')).click().then(() => {
    +            return true;
    +        });
    +    }
    +
    +    disableParser() {
    +        return waitForElementVisibility(this.disableButton).then(() => {
    +            return this.disableButton.click().then(() => {
    +                return waitForElementVisibility(this.enableButton).then(() 
=> {
    +                    return true;
    +                })
    +            });
    +        });
    +    }
    +
    +    enableParser() {
    +        return waitForElementVisibility(this.enableButton).then(() => {
    +            return this.enableButton.click().then(() => {
    +                return 
waitForElementVisibility(this.disableButton).then(() => {
    +                    return true;
    +                })
    +            });
    +        });
    +    }
    +
    +    startParser() {
    +        return waitForElementVisibility(this.startButton).then(() => {
    +            return this.startButton.click().then(() => {
    +                return waitForElementVisibility(this.stopButton).then(() 
=> {
    +                    return true;
    +                })
    +            });
    +        });
    +    }
    +
    +    stopParser() {
    +        return waitForElementVisibility(this.stopButton).then(() => {
    +            return this.stopButton.click().then(() => {
    +                return waitForElementVisibility(this.startButton).then(() 
=> {
    +                    return true;
    +                })
    +            });
    +        });
    +    }
    +
    +    getButtons() {
    +        return element.all(by.css('metron-config-sensor-parser-readonly 
button:not([hidden=""])')).getText();
    +    }
    +
    +    getGrokStatement() {
    --- End diff --
    
    Initially we just exposed a simple interface for this:  a key/value editor 
for advanced config options.  Then we realized a Grok editor would be valuable 
so we added it.  Grok is the only special case right now but your point is 
taken.  There will be more parsers that require a custom UI for configuration 
and there needs to be a clean and well understood way to add that (without 
needing to have detailed knowledge of the whole app).
    
    I don't think it will take a ton of coding work to do this.  Fortunately 
Angular is very modular by nature so it's not hard to rearrange components.  
Having a good design will be key.  Wherever we end up with the parser extension 
work, I'm hoping we can apply the same pattern here.  In fact, we should keep 
the UI in mind as we work towards a solution there.
    
    In the meantime, I am happy to create a Jira for this work since we know it 
will need to be done after parser extension PR makes it in.


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