Confdb.java

/*
 * Copyright 2014 Eediom 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 org.araqne.logdb.query.command;

import java.util.Date;
import java.util.HashMap;
import java.util.List;
import java.util.Map;

import org.araqne.confdb.CommitLog;
import org.araqne.confdb.Config;
import org.araqne.confdb.ConfigCollection;
import org.araqne.confdb.ConfigDatabase;
import org.araqne.confdb.ConfigIterator;
import org.araqne.confdb.ConfigService;
import org.araqne.logdb.DriverQueryCommand;
import org.araqne.logdb.QueryParseException;
import org.araqne.logdb.Row;

/**
 * @since 2.1.2
 * @author xeraph
 * 
 */
public class Confdb extends DriverQueryCommand {
	private ConfigService conf;
	private ConfdbOptions options;

	public Confdb(ConfigService conf, ConfdbOptions options) {
		this.conf = conf;
		this.options = options;
	}

	@Override
	public String getName() {
		return "confdb";
	}

	@SuppressWarnings("unchecked")
	@Override
	public void run() {
		if (options.op == Confdb.Op.DATABASES) {
			for (String name : conf.getDatabaseNames()) {
				ConfigDatabase db = conf.getDatabase(name);
				long commitCount = 0;

				List<CommitLog> logs = null;
				try {
					commitCount = db.getCommitCount();
					logs = db.getCommitLogs(0, 1);
				} catch (Throwable t) {
				}

				long rev = 0;
				String lastMsg = null;
				Date lastCommit = null;
				if (logs != null && !logs.isEmpty()) {
					CommitLog last = logs.get(0);
					rev = last.getRev();
					lastCommit = last.getCreated();
					lastMsg = last.getMessage();
				}

				Row row = new Row();
				row.put("name", name);
				row.put("rev", rev);
				row.put("commits", commitCount);
				row.put("last_msg", lastMsg);
				row.put("last_commit", lastCommit);
				pushPipe(row);
			}
		} else if (options.op == Op.COLS) {
			ConfigDatabase db = conf.getDatabase(options.dbName);
			if (db == null)
				return;

			for (String colName : db.getCollectionNames()) {
				Row row = new Row();
				row.put("name", colName);
				pushPipe(row);
			}
		} else if (options.op == Op.DOCS) {
			ConfigDatabase db = conf.getDatabase(options.dbName);
			if (db == null)
				return;

			ConfigCollection col = db.getCollection(options.colName);
			if (col == null)
				return;

			ConfigIterator it = col.findAll();
			try {
				while (it.hasNext()) {
					Config c = it.next();

					Row row = new Row();
					row.put("_doc_id", c.getId());
					row.put("_doc_prev", c.getPrevRevision());
					row.put("_doc_rev", c.getRevision());

					if (c.getDocument() != null && c.getDocument() instanceof Map) {
						row.map().putAll((Map<String, Object>) c.getDocument());
					} else {
						row.put("_doc", c.getDocument());
					}

					pushPipe(row);
				}
			} finally {
				it.close();
			}
		}
	}

	@Override
	public String toString() {
		return "confdb " + options;
	}

	public static enum Op {
		DATABASES, COLS, DOCS;

		public static Op parse(String s) {
			for (Op p : values()) {
				if (p.name().toLowerCase().equals(s))
					return p;
			}
			//throw new QueryParseException("invalid-confdb-op", -1, s);
			Map<String, String> params = new HashMap<String, String> ();
			params.put("op", s);
			throw new QueryParseException("10004" , -1 , -1 , params);
		}
	};

	public static class ConfdbOptions {

		private Op op;
		private String dbName;
		private String colName;

		public Op getOp() {
			return op;
		}

		public void setOp(Op op) {
			this.op = op;
		}

		public String getDbName() {
			return dbName;
		}

		public void setDbName(String dbName) {
			this.dbName = dbName;
		}

		public String getColName() {
			return colName;
		}

		public void setColName(String colName) {
			this.colName = colName;
		}

		@Override
		public String toString() {
			String s = op.name().toLowerCase();
			if (op == Op.COLS)
				s += " " + dbName;
			else if (op == Op.DOCS)
				s += " " + dbName + " " + colName;

			return s;
		}

	}
}