source: other-projects/hathitrust/wcsa/extracted-features-solr/trunk/solr-ingest/src/main/java/org/hathitrust/extractedfeatures/ProcessForSerialSolrIngest.java@ 32101

package org.hathitrust.extractedfeatures;

import java.io.BufferedInputStream;
import java.io.File;
import java.io.FileInputStream;
import java.io.FileNotFoundException;
import java.io.IOException;
import java.nio.file.Files;
import java.nio.file.Path;
import java.nio.file.Paths;
import java.util.ArrayList;
import java.util.stream.Stream;

import org.apache.commons.cli.*;
import org.apache.hadoop.io.Text;

public class ProcessForSerialSolrIngest 
{
    //private static final long serialVersionUID = 1L;
    
    protected String _input_file;
    protected String _solr_base_url;
    protected String _solr_collection;
    
    protected String _whitelist_filename;
    protected String _langmap_directory;
    
    //protected String _solr_url;
    protected String _output_dir;
    
    protected int    _verbosity;

    public ProcessForSerialSolrIngest(String input_file, String solr_collection,
                                      String solr_base_url, String output_dir, int verbosity)
    {
        _input_file = input_file;
        _solr_collection = solr_collection;
        
        boolean use_whitelist = Boolean.getBoolean("wcsa-ef-ingest.use-whitelist");
        _whitelist_filename = (use_whitelist) ?  System.getProperty("wcsa-ef-ingest.whitelist-filename") : null;
        
        boolean use_langmap = Boolean.getBoolean("wcsa-ef-ingest.use-langmap");
        _langmap_directory = (use_langmap) ?  System.getProperty("wcsa-ef-ingest.langmap-directory") : null;
        
        
        _solr_base_url   = solr_base_url;
        _output_dir = output_dir;
        _verbosity  = verbosity;
    }

    protected String generateAppName()
    {
        String app_name = "Extract Features: Process for Serial Solr Ingest";
        app_name += " [" + _solr_collection + "]";

        if (_solr_base_url != null) { 
            app_name += " solr_base_url=" + _solr_base_url;
        }
        
        if (_output_dir != null) { 
            app_name += " output_dir=" + _output_dir;
        }
        
        return app_name;
    }
    
    public ArrayList<String> extrapolateSolrEndpoints(String solr_collection)
    {
        ArrayList<String> solr_endpoints = new ArrayList<String>();
        
        if (_solr_base_url != null) {
            String solr_url = _solr_base_url + "/" + solr_collection + "/update";
            
            String solr_cloud_nodes = System.getProperty("wcsa-ef-ingest.solr-cloud-nodes",null);
            if (solr_cloud_nodes != null) {
                String [] cloud_nodes = solr_cloud_nodes.split(",");
                for (String cn : cloud_nodes) {
                    String solr_endpoint = solr_url.replaceFirst("//.*?:\\d+/", "//"+cn+"/");
                    solr_endpoints.add(solr_endpoint);
                }
            }
            else {
                solr_endpoints.add(solr_url);
            }
        }
        
        return solr_endpoints;
    }

    public ArrayList<String> readFileLines(Path list_path)
    {
        ArrayList<String> json_file_list = new ArrayList<String>();
        
        try (Stream<String> list_lines = Files.lines(list_path)) {
            list_lines.forEach(line -> {
                json_file_list.add(line);
            });
        } catch (IOException e) {
            e.printStackTrace();
        }
        
        return json_file_list;
        
    }
    
    public Text readJSONText(Path json_path)
    {
        File json_file = json_path.toFile();
    
        String json_filename = json_file.toURI().toString();
        /*
        try {
            json_filename = json_file.getCanonicalPath();
        }
        catch (Exception e) {
            e.printStackTrace();
        }
        */
        String text_string = ClusterFileIO.readTextFile(json_filename);
        
        //ArrayList<String> text_lines = readFileLines(json_path);
        
        //String text_string = String.join("\n",text_lines);
        
        Text json_text = new Text(text_string);
        return json_text;
        
    }
    
    public void execPerVolumeSequenceFile()
    {
        String serial_app_name = generateAppName();     
        System.out.println(serial_app_name);
        
        Path json_filelist_path = Paths.get(_input_file);
        
        // Read in text file
        ArrayList<String> json_file_list = readFileLines(json_filelist_path);
        
        boolean icu_tokenize = Boolean.getBoolean("wcsa-ef-ingest.icu-tokenize");
        boolean strict_file_io = Boolean.getBoolean("wcsa-ef-ingest.strict-file-io");
        
        ArrayList<String> solr_endpoints = extrapolateSolrEndpoints(_solr_collection);
        
        System.out.println("*** away to create PerVolumeJSON class, _langmap_directory = " + _langmap_directory);
        PerVolumeJSON per_vol_json = new PerVolumeJSON(_input_file,_whitelist_filename, _langmap_directory,
                                                       solr_endpoints,_output_dir,_verbosity,
                                                       icu_tokenize,strict_file_io);
        
        // Foreach file, call per_vol_json.call()
        long num_vol_ids = 0;
        for (String json_filename : json_file_list) {
            //Path json_path = Paths.get("file://D:/cygwin64/home/davidb/research/code-managed/hathitrust/wcsa/extracted-features-solr/trunk/solr-ingest/json-files",json_filename);
            Path json_path = Paths.get("json-files",json_filename);
            
            
            System.out.println("*** Processing jsonfile: " + json_path);
            Text json_text = readJSONText(json_path);
            try {
                per_vol_json.call(json_text);
            } catch (IOException e) {
                e.printStackTrace();
            }
            num_vol_ids++;
        }
    
        
        System.out.println("");
        System.out.println("############");
        System.out.println("# Number of volume ids: " + num_vol_ids);
        System.out.println("############");
        System.out.println("");

    
        
        
    }
        

    public static void print_usage(HelpFormatter formatter, Options options)
    {
        formatter.printHelp("RUN.bash [options] input-file solr-collection", options);
    }
    
    public static void main(String[] args) {
        Options options = new Options();

        Option verbosity_opt = new Option("v", "verbosity", true, 
                "Set to control the level of debugging output [0=none, 1=some, 2=lots]");
        verbosity_opt.setRequired(false);
        options.addOption(verbosity_opt);
        
        Option properties_opt = new Option("p", "properties", true, 
                "Read in the specified Java properties file");
        properties_opt.setRequired(false);
        options.addOption(properties_opt);
        
        Option output_dir_opt = new Option("o", "output-dir", true, 
                "If specified, save BZipped Solr JSON files to this directory");
        output_dir_opt.setRequired(false);
        options.addOption(output_dir_opt);
        
        Option solr_base_url_opt = new Option("u", "solr-base-url", true, 
                "If specified, the base URL to post the Solr JSON data to");
        solr_base_url_opt.setRequired(false);
        options.addOption(solr_base_url_opt);
        
        Option read_only_opt = new Option("r", "read-only", false, 
                "Used to initiate a run where the files are all read in, but nothing is ingested/saved");
        read_only_opt.setRequired(false);
        options.addOption(read_only_opt);
        
        // Need to work with CLI v1.2 as this is the JAR that is bundled with Hadoop/Spark 
        CommandLineParser parser = new GnuParser(); 
        //CommandLineParser parser = new DefaultParser(); // if working with CLI v1.3 and above
        
        HelpFormatter formatter = new HelpFormatter();
        CommandLine cmd = null;

        try {
            cmd = parser.parse(options, args);
        }
        catch (ParseException e) {
            System.err.println(e.getMessage());
            print_usage(formatter,options);
            System.exit(1);
        }

        
        String verbosity_str = cmd.getOptionValue("verbosity","1");
        int verbosity = Integer.parseInt(verbosity_str);

        String property_filename = cmd.getOptionValue("properties",null);
    
        String output_dir = cmd.getOptionValue("output-dir",null);
        String solr_base_url   = cmd.getOptionValue("solr-base-url",null);
        boolean read_only   = cmd.hasOption("read-only");
        
        String[] filtered_args = cmd.getArgs();

        if (filtered_args.length != 2) {
            print_usage(formatter,options);
            System.exit(1);
        }
    
        if (property_filename != null) {
            try {
                FileInputStream fis = new FileInputStream(property_filename);
                BufferedInputStream bis = new BufferedInputStream(fis);
                
                System.getProperties().load(bis);
            } 
            catch (FileNotFoundException e) {
                // TODO Auto-generated catch block
                e.printStackTrace();
                System.err.println("File not found: '" + property_filename + "'. Skipping property file read");
            }
            catch (IOException e) {
                System.err.println("IO Exception for: '" + property_filename + "'. Malformed syntax? Skipping property file read");
            }
        }
        
        if (!read_only && ((output_dir == null) && (solr_base_url==null))) {
            System.err.println("Need to specify either --solr-base-url or --output-dir otherwise generated files are not ingested/saved");
            print_usage(formatter,options);
            System.exit(1);
        }
        if (read_only) {
            // For this case, need to ensure solr-url and output-dir are null
            output_dir = null;
            solr_base_url = null;
        }
        
        String input_file  = filtered_args[0];
        String solr_collection = filtered_args[1];
        
        ProcessForSerialSolrIngest prep_for_ingest 
            = new ProcessForSerialSolrIngest(input_file,solr_collection,solr_base_url,output_dir,verbosity);
            
        prep_for_ingest.execPerVolumeSequenceFile();
        
    }
}