/**
* Licensed to the Apache Software Foundation (ASF) under one
* or more contributor license agreements. See the NOTICE file
* distributed with this work for additional information
* regarding copyright ownership. The ASF licenses this file
* to you 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 com.datastax.brisk.demo.pricer.util;
import java.io.IOException;
import java.math.BigInteger;
import java.security.MessageDigest;
import java.util.ArrayList;
import java.util.List;
import java.util.Random;
import com.datastax.brisk.demo.pricer.Pricer;
import com.datastax.brisk.demo.pricer.Session;
import org.apache.cassandra.thrift.Cassandra;
import org.apache.cassandra.thrift.InvalidRequestException;
import org.apache.cassandra.utils.FBUtilities;
public abstract class Operation
{
public static String[] tickers = {"AEA","ASP","AIT","ATV","ACM","ACH","AVA","AEG","ASF","ARO","AMG","ASA","AHD","ALZ","AA","ATU","ARG","AEB","ASG","AEO","ADY","APL","AKT","AMP","AXE","AFG","AGD","AFB","AVT","AGM","APD","ATT","ADI","ASI","AWH","ABB","ARK","ALV","AVK","ARM","ATE","AHS","ARD","ABK","ABM","AMX","AKP","APF","AHT","AOL","AVB","APH","AM","AYN","ADM","ANH","AP","AZN","ATR","AKF","ALE","AAV","AU","AB","ANW","AEL","AWK","AMR","APC","ALL","ACC","ALQ","ACO","AVD","ACI","ALK","AWF","AHL","ACE","ANN","AFE","ART","ABX","ACF","APB","ATO","AIN","AVP","AIZ","AAP","AHC","ADX","ALD","ANF","AIB","ARE","AOS","AIG","AOD","AEE","ABG","ABV","AFF","AAI","ANR","ASH","AAN","AXP","AEM","AN","ARJ","AIQ","AFN","AKS","ALU","ABA","APX","ACG","AGC","AXR","ATI","AOI","ARB","ALJ","AGP","ASX","AXS","AOB","ALX","AES","ADS","ALEX","AMN","ALC","AEH","ALG","ACN","AFL","ADC","AGCO","AZO","AAR","ARL","AEC","AON","ALB","AMD","ABD","APA","AIV","AGU","AKR","AGO","ARI","AVY","ATW","ALF","ADP","ACL","AUY","AME","ATK","AMT","AWR","AER","AET","AIR","AYR","AVF","AJG","ASR","AMB","APU","AEP","AYE","AWI","AEF","ABVT","AWC","AUO","AEV","AFC","ACS","AED","AXA","ABT","AF","AV","ABR","AGN","AVX","AI","ALY","AXL","ARP","AZZ","ARW","AGL","AWP","ACV","ALM","ABC","AYI","BGY","BPL","BDJ","BXC","BRE","BKI","BX","BRO","BXP","BME","BPP","BFK","BTE","BKN","BXS","BG","BT","BYD","BIG","BBVA","BBF","BEC","BSC","BGR","BAF","BGG","BDN","BK","BWA","BDT","BGC","BRFS","BHD","BTA","BBX","BHP","BBV","BMO","BPZ","BC","BFS","BMT","BHL","BGS","BOH","BNJ","BID","BA","BWS","BCR","BSBR","BCS","BGP","BWP","BZH","BSP","BLW","BRY","BIE","BPI","BMC","BAM","BBW","BRF","BHE","BCE","BPK","BEP","BCF","BMR","BBY","BEN","BAK","BAP","BDF","BKS","BPO","BR","BP","BCK","BTZ","BSD","BIF","BKD","BXG","BEO","BNE","BNI","BVF","BKK","BKC","BKE","BCH","BSX","BMA","BZ","BBK","BGT","BLL","BTU","BBD","BCO","BSE","BJS","BPT","BFO","BFR","BSI","BBG","BE","BLX","BNY","BTO","BHK","BSY","BZA","BTF","BHY","BAC","BAS","BMS","BFZ","BTH","BGH","BDC","BMI","BZMD","BDK","BRC","BIO","BOE","BW","BQH","BLT","BVN","BRT","BNS","BCA","BRS","BIP","BNA","BAX","BIN","BHI","BLC","BLH","BEE","BJZ","BEZ","BBI","BDX","BYI","BWF","BDV","BKH","BMY","BQR","BLK","BBL","BYM","BKT","BWY","BJ","BBT","BUD","BHS","BTM","BLU","CLI","CSL","CMP","CVH","CUK","CAT","CSV","CQB","CME","CTB","CHT","CAP","CMS","CUZ","CYT","CLU","CHU","CRP","CVS","CJS","CVX","CSP","CY","COG","CSS","CBY","CHSP","CLW","CMM","CSR","CMN","CAJ","CJB","CRE","CA","CAH","CPL","CYD","CBE","CSA","CCS","CEC","CII","CBM","CBL","CPX","CHI","CXS","CVE","CI","CLD","CNX","CHP","CML","CW","CNK","CPF","CIF","CGI","CTC","CRA","CMC","CPE","CHH","CLC","CCT","CIR","CAE","CCC","CFT","CHN","CNS","CGO","CFR","CKP","CGX","CBG","CBT","CNH","CYN","CIG","CCI","CBR","CTS","CMU","CHS","CGA","CLF","CFN","CL","CCU","CNA","CRK","CBI","CAF","CHW","CAB","CCH","CHG","CTL","CVB","CRH","CCZ","CXH","CXE","CLR","CSJ","CLNY","CHA","CBS","CNI","CTV","CSU","CM","CSE","CJR","CRN","CSC","CP","CDE","CIX","CYH","CSQ","CIB","CPT","CRY","CPO","CBU","CCK","CZZ","CMO","CBK","CSK","CLP","CHC","CR","CIE","CWF","CRR","CLB","COY","COL","CFX","CBB","CIU","CPY","CDR","CE","CWT","CLX","CX","CPP","CVC","CMA","CIT","CPV","CHY","CGV","CS","CJA","CRL","CCO","CV","CBD","CEA","CO","COH","CVO","CXO","CSX","CVG","CNC","CJT","CBC","CWZ","CVI","CMK","CSH","COF","COT","CMG","CVD","CEG","CASC","CNN","CNL","CNQ","CMI","COP","CRM","CKR","CYS","CPN","CHL","CLH","CHK","COO","CACI","CATO","CB","CAG","CPC","CNW","CCW","CLS","CPB","CCL","CIA","CYE","CHE","CUB","CCJ","CEE","CFL","CCM","CCE","CKH","CT","CXW","CRI","CBZ","CN","CF","CEO","COV","CIM","CAS","CPK","CFI","CRS","CPA","CEL","CHD","CAM","CMZ","CAL","CDI","CXG","CNP","CNO","CHB","CRT","CVA","DEW","DKS","DSW","DGI","DUC","DRU","DCS","DOW","DV","DEO","DKW","DRL","DUA","DHT","DHR","DFT","DLN","DCT","DVN","DTK","DK","DTE","DTT","DKT","DAI","DFP","DG","DKQ","DFS","DPZ","DCW","DPD","DWA","DBD","DEXO","DHF","DHG","DEP","DIS","DYN","DF","DLM","DGX","DLR","DKC","DTF","DVD","DTN","DUF","DLX","DE","DHI","DRH","DTG","DNB","DAN","DPM","DEL","DFY","DCE","DJP","DKR","DTV","DIN","DVY","DCM","DKY","DRE","DKL","DAL","DDS","DCP","DES","DGF","DUK","DHX","DM","DKM","DXB","DDE","DKI","DKP","DEB","DVF","DVA","DEX","DBN","DVM","DSX","DGW","DOX","DKK","DPC","DCO","DLB","DNP","DPO","DKX","DO","DB","DAC","DRP","DVR","DOLE","DST","DD","DNY","DL","DRI","DT","DW","DCA","DRQ","DEG","DCI","DDF","DX","DEI","DRC","DSF","DON","DOV","DHM","DSM","DDT","DNR","DPS","DYP","DDR","DY","DKF","DAR","DSU","DFR","DPL","DOM","DFG","EXI","EWT","EOD","ELX","EMN","EWM","ENH","ERF","ESV","EPD","EAC","EWI","EL","EDS","EOT","ENR","EAT","EWJ","EWN","ETG","ETP","ETJ","ELN","ELS","EMD","EMO","EPP","EQY","EGY","ERJ","ETO","EVR","EPE","ENI","EFR","EGO","ENL","EEQ","EXG","EGP","ESI","ENB","EWY","EPR","EXM","EEM","EMS","EQT","EP","EEH","EDT","EMF","EWZ","EBR","ESC","EDE","EOG","EXC","ERO","EGF","EOC","ENS","EIG","EOI","EDN","ETW","EWK","EOE","EHL","EVC","EEP","EWQ","ESL","EK","EVN","EBS","ED","EJ","EMQ","ECA","EXH","EME","EWH","EVT","EIX","EWS","EE","ESD","ETH","ED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public final int index;
protected final Session session;
protected static volatile Double nextGaussian = null;
public Operation(int idx)
{
index = idx;
session = Pricer.session;
}
/**
* Run operation
* @param client Cassandra Thrift client connection
* @throws IOException on any I/O error.
*/
public abstract void run(Cassandra.Client client) throws IOException;
// Utility methods
/**
* Generate values of average size specified by -S, up to cardinality specified by -C
* @return Collection of the values
*/
protected List<String> generateValues()
{
List<String> values = new ArrayList<String>();
int limit = 2 * session.getColumnSize();
for (int i = 0; i < session.getCardinality(); i++)
{
byte[] value = new byte[Pricer.randomizer.nextInt(limit)];
Pricer.randomizer.nextBytes(value);
values.add(FBUtilities.bytesToHex(value));
}
return values;
}
protected String[] generatePortfolio(int limit)
{
String[] portfolio = new String[Pricer.randomizer.nextInt(limit)+1];
for(int i=0; i<portfolio.length; i++)
{
portfolio[i] = pickStock();
}
return portfolio;
}
protected String pickStock()
{
return tickers[Pricer.randomizer.nextInt(tickers.length)];
}
/**
* key generator using Gauss or Random algorithm
* @return byte[] representation of the key string
*/
protected static byte[] generateKey()
{
return (Pricer.session.useRandomGenerator()) ? generateRandomKey() : generateGaussKey();
}
/**
* Random key generator
* @return byte[] representation of the key string
*/
private static byte[] generateRandomKey()
{
String format = "%0" + Pricer.session.getTotalKeysLength() + "d";
return String.format(format, Pricer.randomizer.nextInt(Pricer.session.getNumKeys() - 1)).getBytes();
}
/**
* Gauss key generator
* @return byte[] representation of the key string
*/
private static byte[] generateGaussKey()
{
Session session = Pricer.session;
String format = "%0" + session.getTotalKeysLength() + "d";
for (;;)
{
double token = nextGaussian(session.getMean(), session.getSigma());
if (0 <= token && token < session.getNumKeys())
{
return String.format(format, (int) token).getBytes();
}
}
}
/**
* Gaussian distribution.
* @param mu is the mean
* @param sigma is the standard deviation
*
* @return next Gaussian distribution number
*/
private static double nextGaussian(int mu, float sigma)
{
Random random = Pricer.randomizer;
Double currentState = nextGaussian;
nextGaussian = null;
if (currentState == null)
{
double x2pi = random.nextDouble() * 2 * Math.PI;
double g2rad = Math.sqrt(-2.0 * Math.log(1.0 - random.nextDouble()));
currentState = Math.cos(x2pi) * g2rad;
nextGaussian = Math.sin(x2pi) * g2rad;
}
return mu + currentState * sigma;
}
/**
* MD5 string generation
* @param input String
* @return md5 representation of the string
*/
private String getMD5(String input)
{
MessageDigest md = FBUtilities.threadLocalMD5Digest();
byte[] messageDigest = md.digest(input.getBytes());
StringBuilder hash = new StringBuilder(new BigInteger(1, messageDigest).toString(16));
while (hash.length() < 32)
hash.append("0").append(hash);
return hash.toString();
}
/**
* Equal to python/ruby - 's' * times
* @param str String to multiple
* @param times multiplication times
* @return multiplied string
*/
private String multiplyString(String str, int times)
{
StringBuilder result = new StringBuilder();
for (int i = 0; i < times; i++)
result.append(str);
return result.toString();
}
protected String getExceptionMessage(Exception e)
{
String className = e.getClass().getSimpleName();
String message = (e instanceof InvalidRequestException) ? ((InvalidRequestException) e).getWhy() : e.getMessage();
return (message == null) ? "(" + className + ")" : String.format("(%s): %s", className, message);
}
protected void error(String message) throws IOException
{
if (!session.ignoreErrors())
throw new IOException(message);
else
System.err.println(message);
}
}