io.syndesis.connector.slack.SlackVerifierExtension Maven / Gradle / Ivy

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/*
 * Copyright (C) 2016 Red Hat, Inc.
 *
 * Licensed 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.
 */
package io.syndesis.connector.slack;

import java.util.HashMap;
import java.util.Map;

import org.apache.camel.CamelContext;
import org.apache.camel.component.extension.verifier.DefaultComponentVerifierExtension;
import org.apache.camel.component.extension.verifier.ResultBuilder;
import org.apache.camel.component.extension.verifier.ResultErrorBuilder;
import org.apache.camel.component.extension.verifier.ResultErrorHelper;
import org.apache.camel.component.slack.helper.SlackMessage;
import org.apache.http.HttpResponse;
import org.apache.http.client.HttpClient;
import org.apache.http.client.methods.HttpPost;
import org.apache.http.entity.StringEntity;
import org.apache.http.impl.client.HttpClientBuilder;
import org.json.simple.JSONObject;

public class SlackVerifierExtension extends DefaultComponentVerifierExtension {

    protected SlackVerifierExtension(String defaultScheme, CamelContext context) {
        super(defaultScheme, context);
    }

    // *********************************
    // Parameters validation
    //
    @Override
    protected Result verifyParameters(Map parameters) {
        ResultBuilder builder = ResultBuilder.withStatusAndScope(Result.Status.OK, Scope.PARAMETERS)
                .error(ResultErrorHelper.requiresOption("webhookUrl", parameters));
        if (builder.build().getErrors().isEmpty()) {
            verifyCredentials(builder, parameters);
        }
        return builder.build();
    }

    // *********************************
    // Connectivity validation
    // *********************************
    @Override
    protected Result verifyConnectivity(Map parameters) {
        return ResultBuilder.withStatusAndScope(Result.Status.OK, Scope.CONNECTIVITY)
                .error(parameters, this::verifyCredentials).build();
    }

    @SuppressWarnings("PMD.AvoidCatchingGenericException")
    private void verifyCredentials(ResultBuilder builder, Map parameters) {

        String webhookUrl = (String) parameters.get("webhookUrl");
          try {
            HttpClient client = HttpClientBuilder.create().useSystemProperties().build();
            HttpPost httpPost = new HttpPost(webhookUrl);

            // Build Helper object
            SlackMessage slackMessage;
            slackMessage = new SlackMessage();
            slackMessage.setText("Test connection");

            // Set the post body
            String json = asJson(slackMessage);
            StringEntity body = new StringEntity(json);

            // Do the post
            httpPost.setEntity(body);

            HttpResponse response = client.execute(httpPost);
            
            // 2xx is OK, anything else we regard as failure
            if (response.getStatusLine().getStatusCode() < 200 || response.getStatusLine().getStatusCode() > 299) {
                builder.error(ResultErrorBuilder
                        .withCodeAndDescription(VerificationError.StandardCode.AUTHENTICATION,
                                "Invalid webhookUrl")
                        .parameterKey("webhookUrl").build());
            }
        } catch (Exception e) {
            builder.error(ResultErrorBuilder
                    .withCodeAndDescription(VerificationError.StandardCode.AUTHENTICATION,
                            "Invalid webhookUrl")
                    .parameterKey("webhookUrl").build());
        }
    }
    
    protected String asJson(SlackMessage message) {
        Map jsonMap = new HashMap<>();

        // Put the values in a map
        jsonMap.put("text", message.getText());

        // Generate a JSONObject
        JSONObject jsonObject = new JSONObject(jsonMap);

        // Return the string based on the JSON Object
        return JSONObject.toJSONString(jsonObject);
    }

}