org.eluder.coveralls.maven.plugin.json.JsonWriter Maven / Gradle / Ivy

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Maven plugin for submitting Java code coverage reports to Coveralls web service.
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package org.eluder.coveralls.maven.plugin.json;

/*
 * #[license]
 * coveralls-maven-plugin
 * %%
 * Copyright (C) 2013 Tapio Rautonen
 * %%
 * Permission is hereby granted, free of charge, to any person obtaining a copy
 * of this software and associated documentation files (the "Software"), to deal
 * in the Software without restriction, including without limitation the rights
 * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
 * copies of the Software, and to permit persons to whom the Software is
 * furnished to do so, subject to the following conditions:
 * 
 * The above copyright notice and this permission notice shall be included in
 * all copies or substantial portions of the Software.
 * 
 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
 * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
 * THE SOFTWARE.
 * %[license]
 */

import java.io.Closeable;
import java.io.File;
import java.io.IOException;

import org.codehaus.plexus.util.StringUtils;
import org.eluder.coveralls.maven.plugin.ProcessingException;
import org.eluder.coveralls.maven.plugin.SourceCallback;
import org.eluder.coveralls.maven.plugin.domain.Job;
import org.eluder.coveralls.maven.plugin.domain.Source;

import com.fasterxml.jackson.core.JsonEncoding;
import com.fasterxml.jackson.core.JsonGenerator;
import com.fasterxml.jackson.core.JsonProcessingException;
import com.fasterxml.jackson.databind.MappingJsonFactory;

public class JsonWriter implements SourceCallback, Closeable {

    private final Job job;
    private final File coverallsFile;
    private final JsonGenerator generator;
    
    public JsonWriter(final Job job, final File coverallsFile) throws IOException {
        this.job = job;
        this.coverallsFile = coverallsFile;
        this.generator = new MappingJsonFactory().createGenerator(coverallsFile, JsonEncoding.UTF8);
    }
    
    public final Job getJob() {
        return job;
    }
    
    public final File getCoverallsFile() {
        return coverallsFile;
    }
    
    public void writeStart() throws ProcessingException, IOException {
        try {
            generator.writeStartObject();
            writeOptional("service_name", job.getServiceName());
            writeOptional("service_job_id", job.getServiceJobId());
            writeOptional("repo_token", job.getRepoToken());
            generator.writeArrayFieldStart("source_files");
        } catch (JsonProcessingException ex) {
            throw new ProcessingException(ex);
        }
    }
    
    public void writeEnd() throws ProcessingException, IOException {
        try {
            generator.writeEndArray();
            generator.writeFieldName("git");
            generator.writeObject(job.getGit());
            generator.writeEndObject();
        } catch (JsonProcessingException ex) {
            throw new ProcessingException(ex);
        }
    }
    
    @Override
    public void onSource(final Source source) throws ProcessingException, IOException {
        try {
            generator.writeObject(source);
        } catch (JsonProcessingException ex) {
            throw new ProcessingException(ex);
        }
    }
    
    @Override
    public void close() throws IOException {
        generator.close();
    }
    
    private void write(final String field, final String value) throws ProcessingException, IOException {
        generator.writeStringField(field, value);
    }
    
    private void writeOptional(final String field, final String value) throws ProcessingException, IOException {
        if (StringUtils.isNotBlank(value)) {
            write(field, value);
        }
    }
}