first commit
This commit is contained in:
commit
9ea6a1eecb
|
|
@ -0,0 +1,9 @@
|
|||
#
|
||||
# https://help.github.com/articles/dealing-with-line-endings/
|
||||
#
|
||||
# Linux start script should use lf
|
||||
/gradlew text eol=lf
|
||||
|
||||
# These are Windows script files and should use crlf
|
||||
*.bat text eol=crlf
|
||||
|
||||
|
|
@ -0,0 +1,6 @@
|
|||
.gradle
|
||||
.vscode
|
||||
.idea
|
||||
|
||||
bin
|
||||
build
|
||||
|
|
@ -0,0 +1,95 @@
|
|||
plugins {
|
||||
id 'groovy'
|
||||
id 'application'
|
||||
id "net.nemerosa.versioning" version "2.15.1"
|
||||
id "com.netflix.nebula.ospackage" version "11.2.0"
|
||||
id 'com.github.johnrengelman.shadow' version '8.1.1'
|
||||
}
|
||||
|
||||
repositories {
|
||||
mavenCentral()
|
||||
}
|
||||
|
||||
dependencies {
|
||||
testImplementation 'org.codehaus.groovy:groovy:3.0.13'
|
||||
testImplementation 'org.spockframework:spock-core:2.2-groovy-3.0'
|
||||
testImplementation 'junit:junit:4.13.2'
|
||||
|
||||
annotationProcessor 'info.picocli:picocli-codegen:4.7.4'
|
||||
implementation 'info.picocli:picocli:4.7.4'
|
||||
implementation 'org.slf4j:slf4j-api:2.0.7'
|
||||
implementation 'ch.qos.logback:logback-classic:1.3.8'
|
||||
}
|
||||
|
||||
java {
|
||||
toolchain {
|
||||
languageVersion = JavaLanguageVersion.of(8)
|
||||
}
|
||||
sourceCompatibility = JavaVersion.VERSION_1_8
|
||||
targetCompatibility = JavaVersion.VERSION_1_8
|
||||
}
|
||||
|
||||
application {
|
||||
mainClass = 'biz.nellemann.memstress.Application'
|
||||
}
|
||||
|
||||
tasks.named('test') {
|
||||
useJUnitPlatform()
|
||||
}
|
||||
|
||||
|
||||
group = projectGroup
|
||||
version = projectVersion
|
||||
|
||||
|
||||
jar {
|
||||
manifest {
|
||||
attributes(
|
||||
'Created-By' : "Gradle ${gradle.gradleVersion}",
|
||||
'Build-OS' : "${System.properties['os.name']} ${System.properties['os.arch']} ${System.properties['os.version']}",
|
||||
'Build-Jdk' : "${System.properties['java.version']} (${System.properties['java.vendor']} ${System.properties['java.vm.version']})",
|
||||
'Build-User' : System.properties['user.name'],
|
||||
'Build-Version' : versioning.info.tag ?: (versioning.info.branch + "-" + versioning.info.build),
|
||||
'Build-Revision' : versioning.info.commit,
|
||||
'Build-Timestamp': new Date().format("yyyy-MM-dd'T'HH:mm:ss.SSSZ").toString(),
|
||||
)
|
||||
}
|
||||
}
|
||||
|
||||
apply plugin: 'com.netflix.nebula.ospackage'
|
||||
ospackage {
|
||||
packageName = 'memstress'
|
||||
release = '1'
|
||||
user = 'root'
|
||||
packager = "Mark Nellemann <mark.nellemann@gmail.com>"
|
||||
|
||||
into '/opt/memstress'
|
||||
|
||||
from(shadowJar.outputs.files) {
|
||||
into 'lib'
|
||||
}
|
||||
|
||||
from('build/scriptsShadow') {
|
||||
into 'bin'
|
||||
}
|
||||
|
||||
from(['README.md', 'LICENSE']) {
|
||||
into 'doc'
|
||||
}
|
||||
|
||||
}
|
||||
|
||||
buildDeb {
|
||||
dependsOn build, startShadowScripts
|
||||
}
|
||||
|
||||
buildRpm {
|
||||
dependsOn build, startShadowScripts
|
||||
os = org.redline_rpm.header.Os.LINUX
|
||||
}
|
||||
|
||||
tasks.register("packages") {
|
||||
group "build"
|
||||
dependsOn ":buildDeb"
|
||||
dependsOn ":buildRpm"
|
||||
}
|
||||
|
|
@ -0,0 +1,3 @@
|
|||
projectId = memstress
|
||||
projectGroup = biz.nellemann.memstress
|
||||
projectVersion = 0.0.1
|
||||
Binary file not shown.
|
|
@ -0,0 +1,6 @@
|
|||
distributionBase=GRADLE_USER_HOME
|
||||
distributionPath=wrapper/dists
|
||||
distributionUrl=https\://services.gradle.org/distributions/gradle-8.1.1-bin.zip
|
||||
networkTimeout=10000
|
||||
zipStoreBase=GRADLE_USER_HOME
|
||||
zipStorePath=wrapper/dists
|
||||
|
|
@ -0,0 +1,245 @@
|
|||
#!/bin/sh
|
||||
|
||||
#
|
||||
# Copyright © 2015-2021 the original authors.
|
||||
#
|
||||
# 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
|
||||
#
|
||||
# https://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.
|
||||
#
|
||||
|
||||
##############################################################################
|
||||
#
|
||||
# Gradle start up script for POSIX generated by Gradle.
|
||||
#
|
||||
# Important for running:
|
||||
#
|
||||
# (1) You need a POSIX-compliant shell to run this script. If your /bin/sh is
|
||||
# noncompliant, but you have some other compliant shell such as ksh or
|
||||
# bash, then to run this script, type that shell name before the whole
|
||||
# command line, like:
|
||||
#
|
||||
# ksh Gradle
|
||||
#
|
||||
# Busybox and similar reduced shells will NOT work, because this script
|
||||
# requires all of these POSIX shell features:
|
||||
# * functions;
|
||||
# * expansions «$var», «${var}», «${var:-default}», «${var+SET}»,
|
||||
# «${var#prefix}», «${var%suffix}», and «$( cmd )»;
|
||||
# * compound commands having a testable exit status, especially «case»;
|
||||
# * various built-in commands including «command», «set», and «ulimit».
|
||||
#
|
||||
# Important for patching:
|
||||
#
|
||||
# (2) This script targets any POSIX shell, so it avoids extensions provided
|
||||
# by Bash, Ksh, etc; in particular arrays are avoided.
|
||||
#
|
||||
# The "traditional" practice of packing multiple parameters into a
|
||||
# space-separated string is a well documented source of bugs and security
|
||||
# problems, so this is (mostly) avoided, by progressively accumulating
|
||||
# options in "$@", and eventually passing that to Java.
|
||||
#
|
||||
# Where the inherited environment variables (DEFAULT_JVM_OPTS, JAVA_OPTS,
|
||||
# and GRADLE_OPTS) rely on word-splitting, this is performed explicitly;
|
||||
# see the in-line comments for details.
|
||||
#
|
||||
# There are tweaks for specific operating systems such as AIX, CygWin,
|
||||
# Darwin, MinGW, and NonStop.
|
||||
#
|
||||
# (3) This script is generated from the Groovy template
|
||||
# https://github.com/gradle/gradle/blob/HEAD/subprojects/plugins/src/main/resources/org/gradle/api/internal/plugins/unixStartScript.txt
|
||||
# within the Gradle project.
|
||||
#
|
||||
# You can find Gradle at https://github.com/gradle/gradle/.
|
||||
#
|
||||
##############################################################################
|
||||
|
||||
# Attempt to set APP_HOME
|
||||
|
||||
# Resolve links: $0 may be a link
|
||||
app_path=$0
|
||||
|
||||
# Need this for daisy-chained symlinks.
|
||||
while
|
||||
APP_HOME=${app_path%"${app_path##*/}"} # leaves a trailing /; empty if no leading path
|
||||
[ -h "$app_path" ]
|
||||
do
|
||||
ls=$( ls -ld "$app_path" )
|
||||
link=${ls#*' -> '}
|
||||
case $link in #(
|
||||
/*) app_path=$link ;; #(
|
||||
*) app_path=$APP_HOME$link ;;
|
||||
esac
|
||||
done
|
||||
|
||||
# This is normally unused
|
||||
# shellcheck disable=SC2034
|
||||
APP_BASE_NAME=${0##*/}
|
||||
APP_HOME=$( cd "${APP_HOME:-./}" && pwd -P ) || exit
|
||||
|
||||
# Use the maximum available, or set MAX_FD != -1 to use that value.
|
||||
MAX_FD=maximum
|
||||
|
||||
warn () {
|
||||
echo "$*"
|
||||
} >&2
|
||||
|
||||
die () {
|
||||
echo
|
||||
echo "$*"
|
||||
echo
|
||||
exit 1
|
||||
} >&2
|
||||
|
||||
# OS specific support (must be 'true' or 'false').
|
||||
cygwin=false
|
||||
msys=false
|
||||
darwin=false
|
||||
nonstop=false
|
||||
case "$( uname )" in #(
|
||||
CYGWIN* ) cygwin=true ;; #(
|
||||
Darwin* ) darwin=true ;; #(
|
||||
MSYS* | MINGW* ) msys=true ;; #(
|
||||
NONSTOP* ) nonstop=true ;;
|
||||
esac
|
||||
|
||||
CLASSPATH=$APP_HOME/gradle/wrapper/gradle-wrapper.jar
|
||||
|
||||
|
||||
# Determine the Java command to use to start the JVM.
|
||||
if [ -n "$JAVA_HOME" ] ; then
|
||||
if [ -x "$JAVA_HOME/jre/sh/java" ] ; then
|
||||
# IBM's JDK on AIX uses strange locations for the executables
|
||||
JAVACMD=$JAVA_HOME/jre/sh/java
|
||||
else
|
||||
JAVACMD=$JAVA_HOME/bin/java
|
||||
fi
|
||||
if [ ! -x "$JAVACMD" ] ; then
|
||||
die "ERROR: JAVA_HOME is set to an invalid directory: $JAVA_HOME
|
||||
|
||||
Please set the JAVA_HOME variable in your environment to match the
|
||||
location of your Java installation."
|
||||
fi
|
||||
else
|
||||
JAVACMD=java
|
||||
which java >/dev/null 2>&1 || die "ERROR: JAVA_HOME is not set and no 'java' command could be found in your PATH.
|
||||
|
||||
Please set the JAVA_HOME variable in your environment to match the
|
||||
location of your Java installation."
|
||||
fi
|
||||
|
||||
# Increase the maximum file descriptors if we can.
|
||||
if ! "$cygwin" && ! "$darwin" && ! "$nonstop" ; then
|
||||
case $MAX_FD in #(
|
||||
max*)
|
||||
# In POSIX sh, ulimit -H is undefined. That's why the result is checked to see if it worked.
|
||||
# shellcheck disable=SC3045
|
||||
MAX_FD=$( ulimit -H -n ) ||
|
||||
warn "Could not query maximum file descriptor limit"
|
||||
esac
|
||||
case $MAX_FD in #(
|
||||
'' | soft) :;; #(
|
||||
*)
|
||||
# In POSIX sh, ulimit -n is undefined. That's why the result is checked to see if it worked.
|
||||
# shellcheck disable=SC3045
|
||||
ulimit -n "$MAX_FD" ||
|
||||
warn "Could not set maximum file descriptor limit to $MAX_FD"
|
||||
esac
|
||||
fi
|
||||
|
||||
# Collect all arguments for the java command, stacking in reverse order:
|
||||
# * args from the command line
|
||||
# * the main class name
|
||||
# * -classpath
|
||||
# * -D...appname settings
|
||||
# * --module-path (only if needed)
|
||||
# * DEFAULT_JVM_OPTS, JAVA_OPTS, and GRADLE_OPTS environment variables.
|
||||
|
||||
# For Cygwin or MSYS, switch paths to Windows format before running java
|
||||
if "$cygwin" || "$msys" ; then
|
||||
APP_HOME=$( cygpath --path --mixed "$APP_HOME" )
|
||||
CLASSPATH=$( cygpath --path --mixed "$CLASSPATH" )
|
||||
|
||||
JAVACMD=$( cygpath --unix "$JAVACMD" )
|
||||
|
||||
# Now convert the arguments - kludge to limit ourselves to /bin/sh
|
||||
for arg do
|
||||
if
|
||||
case $arg in #(
|
||||
-*) false ;; # don't mess with options #(
|
||||
/?*) t=${arg#/} t=/${t%%/*} # looks like a POSIX filepath
|
||||
[ -e "$t" ] ;; #(
|
||||
*) false ;;
|
||||
esac
|
||||
then
|
||||
arg=$( cygpath --path --ignore --mixed "$arg" )
|
||||
fi
|
||||
# Roll the args list around exactly as many times as the number of
|
||||
# args, so each arg winds up back in the position where it started, but
|
||||
# possibly modified.
|
||||
#
|
||||
# NB: a `for` loop captures its iteration list before it begins, so
|
||||
# changing the positional parameters here affects neither the number of
|
||||
# iterations, nor the values presented in `arg`.
|
||||
shift # remove old arg
|
||||
set -- "$@" "$arg" # push replacement arg
|
||||
done
|
||||
fi
|
||||
|
||||
|
||||
# Add default JVM options here. You can also use JAVA_OPTS and GRADLE_OPTS to pass JVM options to this script.
|
||||
DEFAULT_JVM_OPTS='"-Xmx64m" "-Xms64m"'
|
||||
|
||||
# Collect all arguments for the java command;
|
||||
# * $DEFAULT_JVM_OPTS, $JAVA_OPTS, and $GRADLE_OPTS can contain fragments of
|
||||
# shell script including quotes and variable substitutions, so put them in
|
||||
# double quotes to make sure that they get re-expanded; and
|
||||
# * put everything else in single quotes, so that it's not re-expanded.
|
||||
|
||||
set -- \
|
||||
"-Dorg.gradle.appname=$APP_BASE_NAME" \
|
||||
-classpath "$CLASSPATH" \
|
||||
org.gradle.wrapper.GradleWrapperMain \
|
||||
"$@"
|
||||
|
||||
# Stop when "xargs" is not available.
|
||||
if ! command -v xargs >/dev/null 2>&1
|
||||
then
|
||||
die "xargs is not available"
|
||||
fi
|
||||
|
||||
# Use "xargs" to parse quoted args.
|
||||
#
|
||||
# With -n1 it outputs one arg per line, with the quotes and backslashes removed.
|
||||
#
|
||||
# In Bash we could simply go:
|
||||
#
|
||||
# readarray ARGS < <( xargs -n1 <<<"$var" ) &&
|
||||
# set -- "${ARGS[@]}" "$@"
|
||||
#
|
||||
# but POSIX shell has neither arrays nor command substitution, so instead we
|
||||
# post-process each arg (as a line of input to sed) to backslash-escape any
|
||||
# character that might be a shell metacharacter, then use eval to reverse
|
||||
# that process (while maintaining the separation between arguments), and wrap
|
||||
# the whole thing up as a single "set" statement.
|
||||
#
|
||||
# This will of course break if any of these variables contains a newline or
|
||||
# an unmatched quote.
|
||||
#
|
||||
|
||||
eval "set -- $(
|
||||
printf '%s\n' "$DEFAULT_JVM_OPTS $JAVA_OPTS $GRADLE_OPTS" |
|
||||
xargs -n1 |
|
||||
sed ' s~[^-[:alnum:]+,./:=@_]~\\&~g; ' |
|
||||
tr '\n' ' '
|
||||
)" '"$@"'
|
||||
|
||||
exec "$JAVACMD" "$@"
|
||||
|
|
@ -0,0 +1,92 @@
|
|||
@rem
|
||||
@rem Copyright 2015 the original author or authors.
|
||||
@rem
|
||||
@rem Licensed under the Apache License, Version 2.0 (the "License");
|
||||
@rem you may not use this file except in compliance with the License.
|
||||
@rem You may obtain a copy of the License at
|
||||
@rem
|
||||
@rem https://www.apache.org/licenses/LICENSE-2.0
|
||||
@rem
|
||||
@rem Unless required by applicable law or agreed to in writing, software
|
||||
@rem distributed under the License is distributed on an "AS IS" BASIS,
|
||||
@rem WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
|
||||
@rem See the License for the specific language governing permissions and
|
||||
@rem limitations under the License.
|
||||
@rem
|
||||
|
||||
@if "%DEBUG%"=="" @echo off
|
||||
@rem ##########################################################################
|
||||
@rem
|
||||
@rem Gradle startup script for Windows
|
||||
@rem
|
||||
@rem ##########################################################################
|
||||
|
||||
@rem Set local scope for the variables with windows NT shell
|
||||
if "%OS%"=="Windows_NT" setlocal
|
||||
|
||||
set DIRNAME=%~dp0
|
||||
if "%DIRNAME%"=="" set DIRNAME=.
|
||||
@rem This is normally unused
|
||||
set APP_BASE_NAME=%~n0
|
||||
set APP_HOME=%DIRNAME%
|
||||
|
||||
@rem Resolve any "." and ".." in APP_HOME to make it shorter.
|
||||
for %%i in ("%APP_HOME%") do set APP_HOME=%%~fi
|
||||
|
||||
@rem Add default JVM options here. You can also use JAVA_OPTS and GRADLE_OPTS to pass JVM options to this script.
|
||||
set DEFAULT_JVM_OPTS="-Xmx64m" "-Xms64m"
|
||||
|
||||
@rem Find java.exe
|
||||
if defined JAVA_HOME goto findJavaFromJavaHome
|
||||
|
||||
set JAVA_EXE=java.exe
|
||||
%JAVA_EXE% -version >NUL 2>&1
|
||||
if %ERRORLEVEL% equ 0 goto execute
|
||||
|
||||
echo.
|
||||
echo ERROR: JAVA_HOME is not set and no 'java' command could be found in your PATH.
|
||||
echo.
|
||||
echo Please set the JAVA_HOME variable in your environment to match the
|
||||
echo location of your Java installation.
|
||||
|
||||
goto fail
|
||||
|
||||
:findJavaFromJavaHome
|
||||
set JAVA_HOME=%JAVA_HOME:"=%
|
||||
set JAVA_EXE=%JAVA_HOME%/bin/java.exe
|
||||
|
||||
if exist "%JAVA_EXE%" goto execute
|
||||
|
||||
echo.
|
||||
echo ERROR: JAVA_HOME is set to an invalid directory: %JAVA_HOME%
|
||||
echo.
|
||||
echo Please set the JAVA_HOME variable in your environment to match the
|
||||
echo location of your Java installation.
|
||||
|
||||
goto fail
|
||||
|
||||
:execute
|
||||
@rem Setup the command line
|
||||
|
||||
set CLASSPATH=%APP_HOME%\gradle\wrapper\gradle-wrapper.jar
|
||||
|
||||
|
||||
@rem Execute Gradle
|
||||
"%JAVA_EXE%" %DEFAULT_JVM_OPTS% %JAVA_OPTS% %GRADLE_OPTS% "-Dorg.gradle.appname=%APP_BASE_NAME%" -classpath "%CLASSPATH%" org.gradle.wrapper.GradleWrapperMain %*
|
||||
|
||||
:end
|
||||
@rem End local scope for the variables with windows NT shell
|
||||
if %ERRORLEVEL% equ 0 goto mainEnd
|
||||
|
||||
:fail
|
||||
rem Set variable GRADLE_EXIT_CONSOLE if you need the _script_ return code instead of
|
||||
rem the _cmd.exe /c_ return code!
|
||||
set EXIT_CODE=%ERRORLEVEL%
|
||||
if %EXIT_CODE% equ 0 set EXIT_CODE=1
|
||||
if not ""=="%GRADLE_EXIT_CONSOLE%" exit %EXIT_CODE%
|
||||
exit /b %EXIT_CODE%
|
||||
|
||||
:mainEnd
|
||||
if "%OS%"=="Windows_NT" endlocal
|
||||
|
||||
:omega
|
||||
|
|
@ -0,0 +1,15 @@
|
|||
/*
|
||||
* This file was generated by the Gradle 'init' task.
|
||||
*
|
||||
* The settings file is used to specify which projects to include in your build.
|
||||
*
|
||||
* Detailed information about configuring a multi-project build in Gradle can be found
|
||||
* in the user manual at https://docs.gradle.org/8.1.1/userguide/multi_project_builds.html
|
||||
*/
|
||||
|
||||
plugins {
|
||||
// Apply the foojay-resolver plugin to allow automatic download of JDKs
|
||||
id 'org.gradle.toolchains.foojay-resolver-convention' version '0.4.0'
|
||||
}
|
||||
|
||||
rootProject.name = 'memstress'
|
||||
|
|
@ -0,0 +1,51 @@
|
|||
package biz.nellemann.memstress;
|
||||
|
||||
import org.slf4j.Logger;
|
||||
import org.slf4j.LoggerFactory;
|
||||
import picocli.CommandLine;
|
||||
|
||||
import java.util.Scanner;
|
||||
import java.util.concurrent.Callable;
|
||||
|
||||
@CommandLine.Command(name = "memstress", mixinStandardHelpOptions = true, versionProvider = VersionProvider.class, description = "Memory performance measurement tool.")
|
||||
public class Application implements Callable<Integer> {
|
||||
|
||||
final Logger log = LoggerFactory.getLogger(Application.class);
|
||||
|
||||
|
||||
@CommandLine.Option(names = { "-t", "--tables" }, paramLabel = "NUM", description = "Create this many tables [default: ${DEFAULT-VALUE}]")
|
||||
int maxTables = 4;
|
||||
|
||||
@CommandLine.Option(names = { "-r", "--rows" }, paramLabel = "NUM", description = "Create this many rows pr. table [default: ${DEFAULT-VALUE}]")
|
||||
int maxRowsPerTable = 10;
|
||||
|
||||
@CommandLine.Option(names = { "-d", "--data" }, paramLabel = "NUM", description = "Create this much data (MB) pr. row [default: ${DEFAULT-VALUE}]")
|
||||
int maxDataPerRow = 100;
|
||||
|
||||
|
||||
@Override
|
||||
public Integer call() throws Exception {
|
||||
|
||||
MyDatabase database = new MyDatabase(maxTables, maxRowsPerTable, maxDataPerRow);
|
||||
database.build("testDb");
|
||||
|
||||
System.out.println("TODO: How to search / read from data stored in rows?");
|
||||
|
||||
Scanner scanner = new Scanner(System.in);
|
||||
System.out.println("Press ENTER to stop");
|
||||
String s= scanner.nextLine();
|
||||
scanner.close();
|
||||
|
||||
database.destroy("testDb");
|
||||
|
||||
return 0;
|
||||
}
|
||||
|
||||
|
||||
public static void main(String... args) {
|
||||
int exitCode = new CommandLine(new Application()).execute(args);
|
||||
System.exit(exitCode);
|
||||
}
|
||||
|
||||
|
||||
}
|
||||
|
|
@ -0,0 +1,89 @@
|
|||
package biz.nellemann.memstress;
|
||||
|
||||
import biz.nellemann.memstress.db.Database;
|
||||
import biz.nellemann.memstress.db.DatabaseManager;
|
||||
import biz.nellemann.memstress.db.Table;
|
||||
import org.slf4j.Logger;
|
||||
import org.slf4j.LoggerFactory;
|
||||
|
||||
import java.nio.ByteBuffer;
|
||||
import java.time.Duration;
|
||||
import java.time.Instant;
|
||||
import java.util.ArrayList;
|
||||
import java.util.HashMap;
|
||||
import java.util.Random;
|
||||
|
||||
public class MyDatabase {
|
||||
|
||||
final Logger log = LoggerFactory.getLogger(MyDatabase.class);
|
||||
|
||||
private final int BYTE_SIZE_1MB = 1_000_000;
|
||||
private final int BYTE_SIZE_1GB = 1_000_000_000;
|
||||
|
||||
private final DatabaseManager databaseManager = new DatabaseManager();
|
||||
private final Random random = new Random();
|
||||
|
||||
// Use when searching or using later?
|
||||
private final ArrayList<Table> tables = new ArrayList<Table>();
|
||||
|
||||
private final int maxTables;
|
||||
private final int maxRowsPerTable;
|
||||
private final int maxDataPerRow;
|
||||
|
||||
public MyDatabase(int tables, int rows, int size) {
|
||||
this.maxTables = tables;
|
||||
this.maxRowsPerTable = rows;
|
||||
this.maxDataPerRow = size;
|
||||
}
|
||||
|
||||
|
||||
public Database build(String dbName) {
|
||||
Instant instant1 = Instant.now();
|
||||
Database database = databaseManager.createDatabase(dbName);
|
||||
for(int t = 1; t <= maxTables; t++) {
|
||||
|
||||
String tableName = String.format("table_%d", t);
|
||||
log.info("Creating table \"{}\"", tableName);
|
||||
|
||||
Table table = database.createTable(tableName);
|
||||
|
||||
for(int r = 1; r <= maxRowsPerTable; r++) {
|
||||
String rowIdx = String.format("%d_of_%d", r, maxRowsPerTable);
|
||||
HashMap<String, ByteBuffer> map = new HashMap<String,ByteBuffer>();
|
||||
for(int m = 1; m <= maxDataPerRow; m++) {
|
||||
map.put(randomString(128), ByteBuffer.wrap(randomBytes(BYTE_SIZE_1MB)) );
|
||||
}
|
||||
table.insertEntry(rowIdx, map);
|
||||
}
|
||||
|
||||
tables.add(table);
|
||||
}
|
||||
|
||||
Instant instant2 = Instant.now();
|
||||
log.info("Done building in-memory database \"{}\" in {}", dbName, Duration.between(instant1, instant2));
|
||||
return database;
|
||||
}
|
||||
|
||||
|
||||
String randomString(final int length) {
|
||||
StringBuilder sb = new StringBuilder(length);
|
||||
for(int l = 0; l < length; l++) {
|
||||
sb.append( (char) random.nextInt(65_535));
|
||||
}
|
||||
return sb.toString();
|
||||
}
|
||||
|
||||
|
||||
byte[] randomBytes(final int length) {
|
||||
byte[] randomArray = new byte[length];
|
||||
random.nextBytes(randomArray);
|
||||
return randomArray;
|
||||
}
|
||||
|
||||
|
||||
void destroy(final String dbName) {
|
||||
databaseManager.deleteDatabase(dbName);
|
||||
}
|
||||
|
||||
|
||||
}
|
||||
|
|
@ -0,0 +1,20 @@
|
|||
package biz.nellemann.memstress;
|
||||
|
||||
|
||||
import picocli.CommandLine;
|
||||
|
||||
import java.io.IOException;
|
||||
import java.util.jar.Attributes;
|
||||
import java.util.jar.Manifest;
|
||||
|
||||
class VersionProvider implements CommandLine.IVersionProvider {
|
||||
|
||||
public String[] getVersion() throws IOException {
|
||||
|
||||
Manifest manifest = new Manifest(getClass().getResourceAsStream("/META-INF/MANIFEST.MF"));
|
||||
Attributes attrs = manifest.getMainAttributes();
|
||||
|
||||
return new String[] { "${COMMAND-FULL-NAME} " + attrs.getValue("Build-Version") };
|
||||
}
|
||||
|
||||
}
|
||||
|
|
@ -0,0 +1,65 @@
|
|||
/**
|
||||
* Example taken from: https://medium.com/@mithoonkumar/design-an-in-memory-nosql-database-ood-428d48b68dfa
|
||||
*/
|
||||
package biz.nellemann.memstress.db;
|
||||
|
||||
import org.slf4j.Logger;
|
||||
import org.slf4j.LoggerFactory;
|
||||
|
||||
import java.util.Date;
|
||||
import java.util.HashMap;
|
||||
|
||||
public class Database {
|
||||
|
||||
final Logger log = LoggerFactory.getLogger(Database.class);
|
||||
|
||||
private String name;
|
||||
private HashMap<String, Table> tableHashMap;
|
||||
private Date createdAt;
|
||||
|
||||
public Database(String name) {
|
||||
this.name = name;
|
||||
this.tableHashMap = new HashMap<>();
|
||||
this.createdAt = new Date();
|
||||
}
|
||||
|
||||
public Table createTable(String tableName) {
|
||||
if (tableHashMap.containsKey(tableName)) {
|
||||
log.warn("createTable() - A table already exists with the given name: {}", tableName);
|
||||
} else {
|
||||
Table table = new Table(tableName);
|
||||
tableHashMap.put(tableName, table);
|
||||
log.debug("createTable() - Table successfully created: {}", tableName);
|
||||
}
|
||||
return tableHashMap.get(tableName);
|
||||
}
|
||||
|
||||
public void dropTable(String tableName) {
|
||||
tableHashMap.remove(tableName);
|
||||
log.debug("dropTable() - Table successfully dropped: {}", tableName);
|
||||
}
|
||||
|
||||
public String getName() {
|
||||
return name;
|
||||
}
|
||||
|
||||
public void setName(String name) {
|
||||
this.name = name;
|
||||
}
|
||||
|
||||
public HashMap<String, Table> getTableHashMap() {
|
||||
return tableHashMap;
|
||||
}
|
||||
|
||||
public void setTableHashMap(HashMap<String, Table> tableHashMap) {
|
||||
this.tableHashMap = tableHashMap;
|
||||
}
|
||||
|
||||
public Date getCreatedAt() {
|
||||
return createdAt;
|
||||
}
|
||||
|
||||
public void setCreatedAt(Date createdAt) {
|
||||
this.createdAt = createdAt;
|
||||
}
|
||||
}
|
||||
|
|
@ -0,0 +1,36 @@
|
|||
/**
|
||||
* Example taken from: https://medium.com/@mithoonkumar/design-an-in-memory-nosql-database-ood-428d48b68dfa
|
||||
*/
|
||||
package biz.nellemann.memstress.db;
|
||||
|
||||
import java.util.HashMap;
|
||||
|
||||
public class DatabaseManager {
|
||||
private HashMap<String, Database> databaseHashMap;
|
||||
|
||||
public Database createDatabase(String databaseName) {
|
||||
if (databaseHashMap.containsKey(databaseName)) {
|
||||
System.out.println("A database already exists with this name");
|
||||
} else {
|
||||
databaseHashMap.put(databaseName, new Database(databaseName));
|
||||
}
|
||||
return databaseHashMap.get(databaseName);
|
||||
}
|
||||
|
||||
public void deleteDatabase(String databaseName) {
|
||||
databaseHashMap.remove(databaseName);
|
||||
}
|
||||
|
||||
public DatabaseManager() {
|
||||
this.databaseHashMap = new HashMap<>();
|
||||
}
|
||||
|
||||
public HashMap<String, Database> getDatabaseHashMap() {
|
||||
return databaseHashMap;
|
||||
}
|
||||
|
||||
public void setDatabaseHashMap(HashMap<String, Database> databaseHashMap) {
|
||||
this.databaseHashMap = databaseHashMap;
|
||||
}
|
||||
|
||||
}
|
||||
|
|
@ -0,0 +1,60 @@
|
|||
/**
|
||||
* Example taken from: https://medium.com/@mithoonkumar/design-an-in-memory-nosql-database-ood-428d48b68dfa
|
||||
*/
|
||||
package biz.nellemann.memstress.db;
|
||||
|
||||
import org.slf4j.Logger;
|
||||
import org.slf4j.LoggerFactory;
|
||||
|
||||
import java.nio.ByteBuffer;
|
||||
import java.util.Date;
|
||||
import java.util.HashMap;
|
||||
|
||||
public class Row {
|
||||
|
||||
final Logger log = LoggerFactory.getLogger(Row.class);
|
||||
|
||||
private String rowId;
|
||||
private HashMap<String, ByteBuffer> columnValuesMap;
|
||||
private Date createdAt;
|
||||
private Date UpdatedAt;
|
||||
|
||||
public Row(String rowId, HashMap<String, ByteBuffer> columnsMap, Date createdAt, Date updatedAt) {
|
||||
this.rowId = rowId;
|
||||
this.columnValuesMap = columnsMap;
|
||||
this.createdAt = createdAt;
|
||||
UpdatedAt = updatedAt;
|
||||
}
|
||||
|
||||
public HashMap<String, ByteBuffer> getColumnValuesMap() {
|
||||
return columnValuesMap;
|
||||
}
|
||||
|
||||
public void setColumnValuesMap(HashMap<String, ByteBuffer> columnValuesMap) {
|
||||
this.columnValuesMap = columnValuesMap;
|
||||
}
|
||||
|
||||
public String getRowId() {
|
||||
return rowId;
|
||||
}
|
||||
|
||||
public void setRowId(String rowId) {
|
||||
this.rowId = rowId;
|
||||
}
|
||||
|
||||
public Date getCreatedAt() {
|
||||
return createdAt;
|
||||
}
|
||||
|
||||
public void setCreatedAt(Date createdAt) {
|
||||
this.createdAt = createdAt;
|
||||
}
|
||||
|
||||
public Date getUpdatedAt() {
|
||||
return UpdatedAt;
|
||||
}
|
||||
|
||||
public void setUpdatedAt(Date updatedAt) {
|
||||
UpdatedAt = updatedAt;
|
||||
}
|
||||
}
|
||||
|
|
@ -0,0 +1,79 @@
|
|||
/**
|
||||
* Example taken from: https://medium.com/@mithoonkumar/design-an-in-memory-nosql-database-ood-428d48b68dfa
|
||||
*/
|
||||
package biz.nellemann.memstress.db;
|
||||
|
||||
import org.slf4j.Logger;
|
||||
import org.slf4j.LoggerFactory;
|
||||
|
||||
import java.nio.ByteBuffer;
|
||||
import java.util.Date;
|
||||
import java.util.HashMap;
|
||||
|
||||
public class Table {
|
||||
|
||||
final Logger log = LoggerFactory.getLogger(Table.class);
|
||||
|
||||
private String tableName;
|
||||
private HashMap<String, Row> rows;
|
||||
private Date createdAt;
|
||||
|
||||
public Table(String tableName) {
|
||||
this.tableName = tableName;
|
||||
this.rows = new HashMap<>();
|
||||
this.createdAt = new Date();
|
||||
}
|
||||
|
||||
public void insertEntry(String rowId, HashMap<String, ByteBuffer> columnsMap) {
|
||||
if (rows.containsKey(rowId)) {
|
||||
log.warn("insertEntry() - Insertion failed, duplicate primary key: {}", rowId);
|
||||
} else {
|
||||
Row row = new Row(rowId, columnsMap, new Date(), new Date());
|
||||
rows.put(rowId, row);
|
||||
log.debug("insertEntry() - Row successfully added: {}", rowId);
|
||||
}
|
||||
}
|
||||
|
||||
public void updateEntry(String rowId, HashMap<String, ByteBuffer>valuesMap) {
|
||||
Row row = rows.get(rowId);
|
||||
valuesMap.forEach( (k, v) -> {
|
||||
row.getColumnValuesMap().put(k, v);
|
||||
});
|
||||
log.debug("updateEntry() - Row successfully updated: {}", rowId);
|
||||
row.setUpdatedAt(new Date());
|
||||
}
|
||||
|
||||
public void deleteEntry(String rowId) {
|
||||
log.debug("updateEntry() - Row successfully deleted: {}", rowId);
|
||||
rows.remove(rowId);
|
||||
}
|
||||
|
||||
public HashMap<String, ByteBuffer> readEntry(String rowId) {
|
||||
return rows.get(rowId).getColumnValuesMap();
|
||||
}
|
||||
|
||||
|
||||
public HashMap<String, Row> getRows() {
|
||||
return rows;
|
||||
}
|
||||
|
||||
public void setRows(HashMap<String, Row> rows) {
|
||||
this.rows = rows;
|
||||
}
|
||||
|
||||
public String getTableName() {
|
||||
return tableName;
|
||||
}
|
||||
|
||||
public void setTableName(String tableName) {
|
||||
this.tableName = tableName;
|
||||
}
|
||||
|
||||
public Date getCreatedAt() {
|
||||
return createdAt;
|
||||
}
|
||||
|
||||
public void setCreatedAt(Date createdAt) {
|
||||
this.createdAt = createdAt;
|
||||
}
|
||||
}
|
||||
|
|
@ -0,0 +1,14 @@
|
|||
<configuration>
|
||||
|
||||
<appender name="STDOUT" class="ch.qos.logback.core.ConsoleAppender">
|
||||
<withJansi>false</withJansi>
|
||||
<encoder>
|
||||
<pattern>%cyan(%d{yyyy-MM-dd HH:mm:ss.SSS}) %gray([%-10thread]) %highlight(%-5level) %magenta(%logger{12}) - %msg%n</pattern>
|
||||
</encoder>
|
||||
</appender>
|
||||
|
||||
<root level="INFO">
|
||||
<appender-ref ref="STDOUT" />
|
||||
</root>
|
||||
|
||||
</configuration>
|
||||
|
|
@ -0,0 +1,10 @@
|
|||
/*
|
||||
* This Spock specification was generated by the Gradle 'init' task.
|
||||
*/
|
||||
package biz.nellemann.memstress
|
||||
|
||||
import spock.lang.Specification
|
||||
|
||||
class ApplicationTest extends Specification {
|
||||
|
||||
}
|
||||
Loading…
Reference in New Issue