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551 lines
26 KiB
551 lines
26 KiB
// WorkTables.java
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// (C) 2010 by Michael Peter Christen; mc@yacy.net, Frankfurt a. M., Germany
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// first published 04.02.2010 on http://yacy.net
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//
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// This is a part of YaCy, a peer-to-peer based web search engine
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//
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// $LastChangedDate$
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// $LastChangedRevision$
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// $LastChangedBy$
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//
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// LICENSE
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//
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// This program is free software; you can redistribute it and/or modify
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// it under the terms of the GNU General Public License as published by
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// the Free Software Foundation; either version 2 of the License, or
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// (at your option) any later version.
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//
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// This program is distributed in the hope that it will be useful,
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// but WITHOUT ANY WARRANTY; without even the implied warranty of
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// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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// GNU General Public License for more details.
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//
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// You should have received a copy of the GNU General Public License
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// along with this program; if not, write to the Free Software
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// Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
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package net.yacy.data;
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import java.io.File;
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import java.io.IOException;
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import java.net.MalformedURLException;
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import java.text.ParseException;
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import java.text.SimpleDateFormat;
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import java.util.ArrayList;
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import java.util.Collection;
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import java.util.Date;
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import java.util.HashMap;
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import java.util.Iterator;
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import java.util.LinkedHashMap;
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import java.util.Map;
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import java.util.TreeMap;
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import org.apache.http.Header;
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import org.apache.http.HttpStatus;
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import org.apache.http.entity.mime.content.ContentBody;
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import net.yacy.cora.date.GenericFormatter;
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import net.yacy.cora.document.encoding.ASCII;
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import net.yacy.cora.document.encoding.UTF8;
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import net.yacy.cora.document.id.DigestURL;
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import net.yacy.cora.document.id.MultiProtocolURL;
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import net.yacy.cora.order.Base64Order;
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import net.yacy.cora.protocol.ClientIdentification;
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import net.yacy.cora.protocol.HeaderFramework;
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import net.yacy.cora.protocol.http.HTTPClient;
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import net.yacy.cora.storage.HandleSet;
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import net.yacy.cora.util.ConcurrentLog;
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import net.yacy.cora.util.SpaceExceededException;
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import net.yacy.kelondro.blob.Tables;
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import net.yacy.kelondro.data.word.WordReference;
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import net.yacy.kelondro.rwi.IndexCell;
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import net.yacy.search.Switchboard;
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import net.yacy.server.serverObjects;
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public class WorkTables extends Tables {
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public final static String TABLE_API_NAME = "api";
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public final static String TABLE_API_TYPE_STEERING = "steering";
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public final static String TABLE_API_TYPE_CONFIGURATION = "configuration";
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public final static String TABLE_API_TYPE_CRAWLER = "crawler";
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public final static String TABLE_API_TYPE_DELETION = "deletion";
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public final static String TABLE_API_TYPE_DUMP = "dump";
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public final static String TABLE_API_COL_TYPE = "type";
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public final static String TABLE_API_COL_COMMENT = "comment";
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public final static String TABLE_API_COL_DATE_RECORDING = "date_recording"; // if not present default to old date field
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public final static String TABLE_API_COL_DATE_LAST_EXEC = "date_last_exec"; // if not present default to old date field
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public final static String TABLE_API_COL_DATE_NEXT_EXEC = "date_next_exec"; // if not present default to zero
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public final static String TABLE_API_COL_DATE = "date"; // old date; do not set in new records
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public final static String TABLE_API_COL_URL = "url";
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public final static String TABLE_API_COL_APICALL_PK = "apicall_pk"; // the primary key for the table entry of that api call (not really a database field, only a name in the apicall)
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public final static String TABLE_API_COL_APICALL_COUNT = "apicall_count"; // counts how often the API was called (starts with 1)
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public final static String TABLE_API_COL_APICALL_SCHEDULE_TIME = "apicall_schedule_time"; // factor for SCHEULE_UNIT time units
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public final static String TABLE_API_COL_APICALL_SCHEDULE_UNIT = "apicall_schedule_unit"; // may be 'minutes', 'hours', 'days'
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public final static String TABLE_API_COL_APICALL_EVENT_KIND = "apicall_event_kind"; //
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public final static String TABLE_API_COL_APICALL_EVENT_ACTION = "apicall_event_action"; //
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public final static String TABLE_ROBOTS_NAME = "robots";
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public final static String TABLE_ACTIVECRAWLS_NAME = "crawljobsActive";
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public final static String TABLE_PASSIVECRAWLS_NAME = "crawljobsPassive";
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public WorkTables(final File workPath) {
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super(workPath, 12);
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}
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/**
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*
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* @param post the api call eventual request parameters.
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* @param servletName the name of the servlet. Must not be null.
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* @return the API URL to be recorded, formatted to include request parameters as URL query parameters
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*/
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public static String generateRecordedURL(final serverObjects post, final String servletName) {
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/* Before API URL serialization, we set any eventual transaction token value to empty :
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* this will later help identify a new valid transaction token will be necessary,
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* but prevents revealing it in the URL displayed in the process scheduler and prevents storing an outdated value */
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final String transactionToken;
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if(post != null) {
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transactionToken = post.get(TransactionManager.TRANSACTION_TOKEN_PARAM);
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} else {
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transactionToken = null;
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}
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if(transactionToken != null && post != null) {
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post.put(TransactionManager.TRANSACTION_TOKEN_PARAM, "");
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}
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// generate the apicall url - without the apicall attributes
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String apiurl = "/" + servletName;
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if(post != null) {
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apiurl += "?" + post.toString();
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}
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/* Now restore the eventual transaction token to prevent side effects on the post object eventually still used by the caller */
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if(post != null) {
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if(transactionToken != null) {
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post.put(TransactionManager.TRANSACTION_TOKEN_PARAM, transactionToken);
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} else {
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post.remove(TransactionManager.TRANSACTION_TOKEN_PARAM);
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}
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}
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return apiurl;
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}
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/**
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* @param servletName the servlet name used to identify the API when the call is recorded.
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* @param post Servlet request parameters. Must not be null.
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* @param sb the {@link Switchboard} instance. Must not be null.
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* @return the most recently recorded call to the given API with the same parameters, or null when no one was found or data is not accessible
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*/
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public static Row selectLastExecutedApiCall(final String servletName, final serverObjects post, final Switchboard sb) {
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Row lastRecordedCall = null;
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if (servletName != null && sb != null && sb.tables != null) {
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try {
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if (post != null && post.containsKey(WorkTables.TABLE_API_COL_APICALL_PK)) {
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/*
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* Search the table on the primary key when when present (re-execution of a
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* recorded call)
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*/
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lastRecordedCall = sb.tables.select(WorkTables.TABLE_API_NAME,
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UTF8.getBytes(post.get(WorkTables.TABLE_API_COL_APICALL_PK)));
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} else {
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/* Else search the table on the API URL as recorded (including parameters) */
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final String apiURL = WorkTables.generateRecordedURL(post, servletName);
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final Iterator<Row> rowsIt = sb.tables.iterator(WorkTables.TABLE_API_NAME,
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WorkTables.TABLE_API_COL_URL, UTF8.getBytes(apiURL));
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while (rowsIt.hasNext()) {
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final Row currentRow = rowsIt.next();
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if (currentRow != null) {
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final Date currentLastExec = currentRow.get(WorkTables.TABLE_API_COL_DATE_LAST_EXEC,
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(Date) null);
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if (currentLastExec != null) {
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if (lastRecordedCall == null) {
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/*
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* Do not break now the loop : we are looking for the most recent API call on
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* the same URL
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*/
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lastRecordedCall = currentRow;
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} else if (lastRecordedCall.get(WorkTables.TABLE_API_COL_DATE_LAST_EXEC, (Date) null)
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.before(currentLastExec)) {
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lastRecordedCall = currentRow;
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}
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}
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}
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}
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}
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} catch (final IOException e) {
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ConcurrentLog.logException(e);
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} catch (final SpaceExceededException e) {
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ConcurrentLog.logException(e);
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}
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}
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return lastRecordedCall;
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}
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/**
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* recording of a api call. stores the call parameters into the API database table
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* @param post the post arguments of the api call. Must not be null.
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* @param servletName the name of the servlet
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* @param type name of the servlet category
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* @param comment visual description of the process
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* @return the pk of the new entry in the api table
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*/
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public byte[] recordAPICall(final serverObjects post, final String servletName, final String type, final String comment) {
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// remove the apicall attributes from the post object
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String[] pks = post.remove(TABLE_API_COL_APICALL_PK);
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byte[] pk = pks == null ? null : UTF8.getBytes(pks[0]);
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// generate the apicall url - without the apicall attributes
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final String apiurl = generateRecordedURL(post, servletName);
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// read old entry from the apicall table (if exists)
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Row row = null;
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try {
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row = (pk == null) ? null : super.select(TABLE_API_NAME, pk);
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} catch (final IOException e) {
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ConcurrentLog.logException(e);
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} catch (final SpaceExceededException e) {
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ConcurrentLog.logException(e);
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}
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// insert or update entry
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try {
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if (row == null) {
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// create and insert new entry
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Data data = new Data();
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data.put(TABLE_API_COL_TYPE, UTF8.getBytes(type));
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data.put(TABLE_API_COL_COMMENT, UTF8.getBytes(comment));
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byte[] date = UTF8.getBytes(GenericFormatter.SHORT_MILSEC_FORMATTER.format());
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data.put(TABLE_API_COL_DATE_RECORDING, date);
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data.put(TABLE_API_COL_DATE_LAST_EXEC, date);
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data.put(TABLE_API_COL_URL, UTF8.getBytes(apiurl));
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// insert APICALL attributes
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data.put(TABLE_API_COL_APICALL_COUNT, "1");
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pk = super.insert(TABLE_API_NAME, data);
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} else {
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// modify and update existing entry
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// modify date attributes and patch old values
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row.put(TABLE_API_COL_DATE_LAST_EXEC, UTF8.getBytes(GenericFormatter.SHORT_MILSEC_FORMATTER.format()));
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if (!row.containsKey(TABLE_API_COL_DATE_RECORDING)) row.put(TABLE_API_COL_DATE_RECORDING, row.get(TABLE_API_COL_DATE));
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row.remove(TABLE_API_COL_DATE);
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// insert APICALL attributes
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row.put(TABLE_API_COL_APICALL_COUNT, row.get(TABLE_API_COL_APICALL_COUNT, 1) + 1);
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calculateAPIScheduler(row, false); // set next execution time (as this might be a forward existing entry with schedule data)
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super.update(TABLE_API_NAME, row);
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assert pk != null;
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}
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} catch (final IOException e) {
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ConcurrentLog.logException(e);
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} catch (final SpaceExceededException e) {
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ConcurrentLog.logException(e);
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}
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ConcurrentLog.info("APICALL", apiurl);
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return pk;
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}
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/**
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* store a API call and set attributes to schedule a re-call of that API call according to a given frequence
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* This is the same as the previous method but it also computes a re-call time and stores that additionally
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* @param post the post arguments of the api call
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* @param servletName the name of the servlet
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* @param type name of the servlet category
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* @param comment visual description of the process
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* @param time the time until next scheduled execution of this api call
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* @param unit the time unit for the scheduled call
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* @return the pk of the new entry in the api table
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*/
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public byte[] recordAPICall(final serverObjects post, final String servletName, final String type, final String comment, int time, String unit) {
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if (post.containsKey(TABLE_API_COL_APICALL_PK)) {
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// this api call has already been stored somewhere.
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return recordAPICall(post, servletName, type, comment);
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}
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if (time < 0 || unit == null || unit.isEmpty() || "minutes,hours,days".indexOf(unit) < 0) {
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time = 0; unit = "";
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} else {
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if (unit.equals("minutes") && time < 10) time = 10;
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}
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/* Before API URL serialization, we set any eventual transaction token value to empty :
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* this will later help identify a new valid transaction token will be necessary,
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* but without revealing it in the URL displayed in the process scheduler and storing an invalid value */
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final String transactionToken = post.get(TransactionManager.TRANSACTION_TOKEN_PARAM);
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if(transactionToken != null) {
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post.put(TransactionManager.TRANSACTION_TOKEN_PARAM, "");
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}
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// generate the apicall url - without the apicall attributes
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final String apiurl = /*"http://localhost:" + getConfig("port", "8090") +*/ "/" + servletName + "?" + post.toString();
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/* Now restore the eventual transaction token to prevent side effects on the post object eventually still used by the caller */
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if(transactionToken != null) {
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post.put(TransactionManager.TRANSACTION_TOKEN_PARAM, transactionToken);
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} else {
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post.remove(TransactionManager.TRANSACTION_TOKEN_PARAM);
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}
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byte[] pk = null;
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// insert entry
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try {
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// create and insert new entry
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Data data = new Data();
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data.put(TABLE_API_COL_TYPE, UTF8.getBytes(type));
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data.put(TABLE_API_COL_COMMENT, UTF8.getBytes(comment));
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byte[] date = ASCII.getBytes(GenericFormatter.SHORT_MILSEC_FORMATTER.format());
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data.put(TABLE_API_COL_DATE_RECORDING, date);
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data.put(TABLE_API_COL_DATE_LAST_EXEC, date);
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data.put(TABLE_API_COL_URL, UTF8.getBytes(apiurl));
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// insert APICALL attributes
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data.put(TABLE_API_COL_APICALL_COUNT, UTF8.getBytes("1"));
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data.put(TABLE_API_COL_APICALL_SCHEDULE_TIME, ASCII.getBytes(Integer.toString(time)));
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data.put(TABLE_API_COL_APICALL_SCHEDULE_UNIT, UTF8.getBytes(unit));
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calculateAPIScheduler(data, false); // set next execution time
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pk = super.insert(TABLE_API_NAME, data);
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} catch (final IOException e) {
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ConcurrentLog.logException(e);
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} catch (final SpaceExceededException e) {
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ConcurrentLog.logException(e);
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}
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ConcurrentLog.info("APICALL", apiurl);
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return pk;
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}
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/**
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* execute an API call using a api table row which contains all essentials
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* to access the server also the host and port must be given
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* @param pks a collection of primary keys denoting the rows in the api table
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* @param host the host where the api shall be called
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* @param port the port on the host
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* @return a map of the called urls and the http status code of the api call or -1 if any other IOException occurred
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*/
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public Map<String, Integer> execAPICalls(String host, int port, Collection<String> pks, final String username, final String pass) {
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LinkedHashMap<String, Integer> l = new LinkedHashMap<String, Integer>();
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// now call the api URLs and store the result status
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try (final HTTPClient client = new HTTPClient(ClientIdentification.yacyInternetCrawlerAgent)) {
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client.setTimout(120000);
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Tables.Row row;
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for (final String pk: pks) {
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row = null;
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try {
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row = select(WorkTables.TABLE_API_NAME, UTF8.getBytes(pk));
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} catch (final IOException e) {
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ConcurrentLog.logException(e);
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} catch (final SpaceExceededException e) {
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ConcurrentLog.logException(e);
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}
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if (row == null) continue;
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String theapicall = UTF8.String(row.get(WorkTables.TABLE_API_COL_URL)) + "&" + WorkTables.TABLE_API_COL_APICALL_PK + "=" + UTF8.String(row.getPK());
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try {
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MultiProtocolURL url = new MultiProtocolURL("http", host, port, theapicall);
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final Map<String, String> attributes = url.getAttributes();
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final boolean isTokenProtectedAPI = attributes.containsKey(TransactionManager.TRANSACTION_TOKEN_PARAM);
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// use 4 param MultiProtocolURL to allow api_row_url with searchpart (like url?p=a&p2=b ) in client.GETbytes()
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if (theapicall.length() > 1000 || isTokenProtectedAPI) {
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// use a POST to execute the call
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execPostAPICall(host, port, username, pass, client, l, url, isTokenProtectedAPI);
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} else {
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// use a GET to execute the call
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ConcurrentLog.info("WorkTables", "executing url: " + url.toNormalform(true));
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try {
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client.GETbytes(url, username, pass, false); // use GETbytes(MultiProtocolURL,..) form to allow url in parameter (&url=path%
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if(client.getStatusCode() == HttpStatus.SC_METHOD_NOT_ALLOWED) {
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/* GET method not allowed (HTTP 450 status) : this may be an old API entry,
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* now restricted to HTTP POST and requiring a transaction token. We try now with POST. */
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execPostAPICall(host, port, username, pass, client, l, url, true);
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} else {
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l.put(url.toNormalform(true), client.getStatusCode());
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}
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} catch (final IOException e) {
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ConcurrentLog.logException(e);
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l.put(url.toString(), -1);
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}
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}
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} catch (MalformedURLException ex) {
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ConcurrentLog.warn("APICALL", "wrong url in apicall " + theapicall);
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}
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}
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} catch (IOException e) {
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ConcurrentLog.logException(e);
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}
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return l;
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}
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/**
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* Executes an API call using HTTP POST method to the YaCy peer with the given parameters
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* @param host the peer host name
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* @param port the peer port
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* @param username authentication user name
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* @param pass authentication encoded password
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* @param client the HTTP client to use
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* @param results the results map to update
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* @param apiURL the full API URL with all parameters
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* @param isTokenProtectedAPI set to true when the API is protected by a transaction token
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* @throws MalformedURLException when the HTTP POST url could not be derived from apiURL
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*/
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private void execPostAPICall(String host, int port, final String username, final String pass,
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final HTTPClient client, final LinkedHashMap<String, Integer> results,
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final MultiProtocolURL apiURL, final boolean isTokenProtectedAPI) throws MalformedURLException {
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Map<String, ContentBody> post = new HashMap<>();
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for (Map.Entry<String, String> a: apiURL.getAttributes().entrySet()) {
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post.put(a.getKey(), UTF8.StringBody(a.getValue()));
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}
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final MultiProtocolURL url = new MultiProtocolURL("http", host, port, apiURL.getPath());
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try {
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if (isTokenProtectedAPI) {
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// Eventually acquire first a new valid transaction token before posting data
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client.GETbytes(url, username, pass, false);
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if (client.getStatusCode() != HttpStatus.SC_OK) {
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/* Do not fail immediately, the token may be no more necessary on this API :
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* let's log a warning but try anyway the POST call that will eventually reject the request */
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ConcurrentLog.warn("APICALL", "Could not retrieve a transaction token for " + apiURL.toNormalform(true));
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} else {
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final Header transactionTokenHeader = client.getHttpResponse()
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.getFirstHeader(HeaderFramework.X_YACY_TRANSACTION_TOKEN);
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if (transactionTokenHeader == null) {
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/*
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* Do not fail immediately, the token may be no more
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* necessary on this API : let's log a warning but try
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* anyway the POST call that will eventually reject the
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* request
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*/
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ConcurrentLog.warn("APICALL",
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"Could not retrieve a transaction token for " + apiURL.toNormalform(true));
|
|
} else {
|
|
post.put(TransactionManager.TRANSACTION_TOKEN_PARAM,
|
|
UTF8.StringBody(transactionTokenHeader.getValue()));
|
|
}
|
|
}
|
|
|
|
}
|
|
|
|
client.POSTbytes(url, "localhost", post, username, pass, false, false);
|
|
|
|
results.put(apiURL.toNormalform(true), client.getStatusCode());
|
|
} catch (final IOException e) {
|
|
ConcurrentLog.logException(e);
|
|
results.put(apiURL.toNormalform(true), -1);
|
|
}
|
|
}
|
|
|
|
/**
|
|
* Executes an HTTP GET API call
|
|
* @param host target host name
|
|
* @param port target port
|
|
* @param path target path
|
|
* @param pk the primary key of the api call
|
|
* @param username authentication user name
|
|
* @param pass authentication encoded password
|
|
* @return the API response HTTP status, or -1 when an error occured
|
|
*/
|
|
public static int execGetAPICall(String host, int port, String path, byte[] pk, final String username, final String pass) {
|
|
// now call the api URLs and store the result status
|
|
String url = "http://" + host + ":" + port + path;
|
|
if (pk != null) url += "&" + WorkTables.TABLE_API_COL_APICALL_PK + "=" + UTF8.String(pk);
|
|
try (final HTTPClient client = new HTTPClient(ClientIdentification.yacyInternetCrawlerAgent)) {
|
|
client.setTimout(120000);
|
|
client.GETbytes(url, username, pass, false);
|
|
return client.getStatusCode();
|
|
} catch (final IOException e) {
|
|
ConcurrentLog.logException(e);
|
|
return -1;
|
|
}
|
|
}
|
|
|
|
/**
|
|
* simplified call to execute a single entry in the api database table
|
|
* @param pk the primary key of the entry
|
|
* @param host the host where the api shall be called
|
|
* @param port the port on the host
|
|
* @return the http status code of the api call or -1 if any other IOException occurred
|
|
*/
|
|
public int execAPICall(String pk, String host, int port, final String username, final String pass) {
|
|
ArrayList<String> pks = new ArrayList<String>();
|
|
pks.add(pk);
|
|
Map<String, Integer> m = execAPICalls(host, port, pks, username, pass);
|
|
if (m.isEmpty()) return -1;
|
|
return m.values().iterator().next().intValue();
|
|
}
|
|
|
|
final static long hour = 1000L * 60L * 60L;
|
|
final static long day = hour * 24L;
|
|
|
|
/**
|
|
* calculate the execution time in a api call table based on given scheduling time and last execution time
|
|
* @param row the database row in the api table
|
|
* @param update if true then the next execution time is based on the latest computed execution time; otherwise it is based on the last execution time
|
|
*/
|
|
public static void calculateAPIScheduler(Tables.Data row, boolean update) {
|
|
Date date = row.containsKey(WorkTables.TABLE_API_COL_DATE) ? row.get(WorkTables.TABLE_API_COL_DATE, (Date) null) : null;
|
|
date = update ? row.get(WorkTables.TABLE_API_COL_DATE_NEXT_EXEC, date) : row.get(WorkTables.TABLE_API_COL_DATE_LAST_EXEC, date);
|
|
if (date == null) return;
|
|
long d = 0;
|
|
|
|
final String kind = row.get(WorkTables.TABLE_API_COL_APICALL_EVENT_KIND, "off");
|
|
if ("off".equals(kind)) {
|
|
int time = row.get(WorkTables.TABLE_API_COL_APICALL_SCHEDULE_TIME, -1);
|
|
if (time <= 0) { // no schedule time
|
|
row.put(WorkTables.TABLE_API_COL_DATE_NEXT_EXEC, "");
|
|
return;
|
|
}
|
|
String unit = row.get(WorkTables.TABLE_API_COL_APICALL_SCHEDULE_UNIT, "days");
|
|
if (unit.equals("minutes")) d = 60000L * Math.max(10, time);
|
|
if (unit.equals("hours")) d = hour * time;
|
|
if (unit.equals("days")) d = day * time;
|
|
if ((d + date.getTime()) < System.currentTimeMillis()) { // missed schedule
|
|
d += System.currentTimeMillis(); // advance next exec from now
|
|
} else {
|
|
d += date.getTime(); // advance next exec from last execution
|
|
}
|
|
d -= d % 60000; // remove seconds
|
|
} else {
|
|
String action = row.get(WorkTables.TABLE_API_COL_APICALL_EVENT_ACTION, "startup");
|
|
if (!"startup".equals(action)) try {
|
|
SimpleDateFormat dateFormat = new SimpleDateFormat("yyyyMMddHHmm");
|
|
d = dateFormat.parse(dateFormat.format(new Date()).substring(0, 8) + action).getTime();
|
|
if (d < System.currentTimeMillis()) d += day;
|
|
} catch (final ParseException e) {} else {
|
|
row.put(WorkTables.TABLE_API_COL_DATE_NEXT_EXEC, "");
|
|
return;
|
|
}
|
|
}
|
|
row.put(WorkTables.TABLE_API_COL_DATE_NEXT_EXEC, new Date(d));
|
|
}
|
|
|
|
public void failURLsRegisterMissingWord(IndexCell<WordReference> indexCell, final DigestURL url, HandleSet queryHashes) {
|
|
|
|
// remove words from index
|
|
if (indexCell != null) {
|
|
for (final byte[] word: queryHashes) {
|
|
indexCell.removeDelayed(word, url.hash());
|
|
}
|
|
}
|
|
}
|
|
|
|
public static Map<byte[], String> commentCache(Switchboard sb) {
|
|
Map<byte[], String> comments = new TreeMap<byte[], String>(Base64Order.enhancedCoder);
|
|
Iterator<Tables.Row> i;
|
|
try {
|
|
i = sb.tables.iterator(WorkTables.TABLE_API_NAME);
|
|
Tables.Row row;
|
|
while (i.hasNext()) {
|
|
row = i.next();
|
|
comments.put(row.getPK(), UTF8.String(row.get(WorkTables.TABLE_API_COL_COMMENT)));
|
|
}
|
|
} catch (final IOException e) {
|
|
ConcurrentLog.logException(e);
|
|
}
|
|
return comments;
|
|
}
|
|
}
|