Object Oriented Wrapper of AWS DynamoDB SDK
Home Page: https://dynamo.jcabi.com/
License: Other
This project is just a parent POM for all other Java projects in "jcabi family".
See www.jcabi.com website for more details.
![renovate[bot] avatar](https://avatars.githubusercontent.com/in/2740?v=4 "renovate[bot]")
let's use com.jcabi:jcabi:1.4 as a parent pom
MkData#update method is not covered by H2DataTest unit test, and it should be.
Let's add a collection of classes that retry AWS operations
Fix for issue #7 only dealt with table names. The same Base32 encoding should be done for column names. This is needed for yegor/s3auth#90
@dmarkov Looks like we need to add .gitattributes to force EOL of the repo.
Subticket of #8 (comment)
Remove puzzle at ReTable#101
Let's use Base32 encoding on column names, just like we do for table names. See #7 for reference to table names encoding. When finished, please remove @todo from H2DataTest line 143.
Note I had to append the suffix "Test" to the file name so that mvn test would execute it.
iteratesItems(com.jcabi.dynamo.AwsIteratorITCaseTest) Time elapsed: 0.008 sec <<< ERROR!
java.lang.NoClassDefFoundError: Could not initialize class com.jcabi.dynamo.RegionMock
at com.jcabi.dynamo.AwsIteratorITCaseTest.iteratesItems(AwsIteratorITCaseTest.java:57)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.lang.reflect.Method.invoke(Method.java:497)
at org.junit.runners.model.FrameworkMethod$1.runReflectiveCall(FrameworkMethod.java:50)
at org.junit.internal.runners.model.ReflectiveCallable.run(ReflectiveCallable.java:12)
at org.junit.runners.model.FrameworkMethod.invokeExplosively(FrameworkMethod.java:47)
at org.junit.internal.runners.statements.InvokeMethod.evaluate(InvokeMethod.java:17)
at org.junit.runners.ParentRunner.runLeaf(ParentRunner.java:325)
at org.junit.runners.BlockJUnit4ClassRunner.runChild(BlockJUnit4ClassRunner.java:78)
at org.junit.runners.BlockJUnit4ClassRunner.runChild(BlockJUnit4ClassRunner.java:57)
at org.junit.runners.ParentRunner$3.run(ParentRunner.java:290)
at org.apache.maven.surefire.junitcore.pc.Scheduler$1.run(Scheduler.java:318)
at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511)
at java.util.concurrent.FutureTask.run(FutureTask.java:266)
at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142)
at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617)
at java.lang.Thread.run(Thread.java:745)
MkData represents data of a table. Conceptually it is wrong to require table's name to search for data in an object that represents the data of a table, because table name should not matter. But each of MkData methods requires a table name as a parameter. Clients of MkData are not supposed to know the name of the table, because there is no table — only its records.
Now, I see why that parameter is in the methods' signatures in the first place: it is the implementation of H2Data leaking into the MkData interface's signature. H2Data does need the name of a table. But nevertheless the name of a table should not be a parameter of MkData methods, but instead a constructor parameter in H2Data.
There are many classes that contain methods whose arguments are annotated with @NotNull, and also some methods that don't have those annotations. I'm speaking strictly about methods whose parameters are descendants of Object.
For example, AttributeUpdates#with(String,AttributeValue) and AttributeUpdates#with(String,Object) methods lack @NotNull validation for their arguments. Other AttributeUpdates#with methods have those annotations for their arguments.
Also, I'm not sure if methods inherited from Map that have proper implementations, like AttributeUpdates#containsKey(Object) and unlike AttributeUpdates#remove(Object), should have their parameters annotated with @NotNull as well.
Other examples of inconsistent @NotNull usage are: QueryValve#withSelect(Select), QueryValve#withIndexName(String).
As subticket of #8 (comment)
Remove puzzle at MkTable#106
AwsTable#print is a pubilc static method that operates on public methods of its argument ConsumedCapacity. It could be made into an instance method of PrintableConsumedCapacity class, so we have one less public static method in our codebase.
There is no estimate in the project yet. We have to create one as explained here
Puzzle 10-d74a245f in src/main/java/com/jcabi/dynamo/Throughput.java:76-76 has to be resolved: The exact algorithm for figuring out read and write... The puzzle was created by Suseika on 16-Jun-2015.
If you have any technical questions, don't ask me, submit new tickets instead
Puzzle 8-81cf3845 in src/main/java/com/jcabi/dynamo/retry/ReTable.java:101-102 has to be resolved: Implement ReTable.delete() operation. delete() method added to Table interface and implemented in AwsTable class so far.... The puzzle was created by Nikolay Popov on 28-Jan-2015.
If you have any technical questions, don't ask me, submit new tickets instead
I'm currently looking at migrating a class in S3Auth from using Amazon AWS S3 SDK to JCabi-Dynamo (see yegor256/s3auth#90). I'd like to implement unit tests before I push the new code changes.
There are instructions on how to set up an integration tests with JCabi-Dynamo, but I don't see anything regarding unit tests. Do we have a way to mock Region and Table for unit testing? If not, can we have one implemented?
Copyright sections still feature 2014 as a year.
Without this upgrade jcabi-dynamo can't be used in proejcts that depend on jcabi-aspects >= 0.18 (missing @Immutable.Array on arrays).
At page http://dynamo.jcabi.com/ there is a paragraph
Since version 0.9, it is strongly recommended to use wrappers from com.jcabi.dynamo.retry package
and "com.jcabi.dynamo.retry" there is a link to http://dynamo.jcabi.com/apidocs-0.18.1/com/jcabi/dynamo/retry/index.html But when I open it I get 404 page.
Puzzle 56-9ee1f8fe in src/test/java/com/jcabi/dynamo/RegionITCase.java:53-56 has to be resolved: integration test fails when adding @NotNull to constraints this needs to be fixed in methods RegionITCase.worksWithAmazon() and RegionITCase.retrievesAttributesFromDynamo(). Also see AwsIteratorITCase.... The puzzle was created by tkjee on 5-Oct-2015.
If you have any technical questions, don't ask me, submit new tickets instead
During maven build following warning reported:
[ERROR] JSR-303 validator failed to initialize: Unable to create a Configuration, because no Bean Validation provider could be found. Add a provider like Hibernate Validator (RI) to your classpath. (see http://www.jcabi.com/jcabi-aspects/jsr-303.html)
While we are at com.jcabi.dynamo.mock.MkFrame.through(Valve),
shouldn't we return this.through(valve); instead of the implementedreturn this;?
Puzzle 8-abdd4627 in src/main/java/com/jcabi/dynamo/mock/MkTable.java:106-107 has to be resolved: Implement MkTable.delete() operation. delete() method added to Table interface and implemented in AwsTable class so far.... The puzzle was created by Nikolay Popov on 28-Jan-2015.
If you have any technical questions, don't ask me, submit new tickets instead
Since dynamodb attribute names are case sensitive, what is the reason to convert all attribute name to lowercase in AwsItem and Conditions classes? This makes it impossible to retrieve attributes with uppercase letters in their names. Thanks.
Travis configuration doesn't have PDD check while rultor config has it.
Please add pdd --source=$(pwd) --verbose --file=/dev/null to .travis.yml.
Methods #get() and #has() in AwsItem use all attributes as keys, which leads to exception from AWS. We should filter out those that are not keys
Its put() and update() methods have nearly identical description in the javadoc. It is not clear what is the keys parameter in the update() method for.
The javadoc text for the methods should tell what is the difference between them and what excaclty the keys parameter is for.
Why are there duplicate validations on both an Interface and it's implementation.
I encountered this issue while working on yegor256/s3auth#90.
In S3Auth, the table and attribute names contain . characters, e.g. domain.name. However, H2 does not allow this, but [http://docs.aws.amazon.com/amazondynamodb/latest/developerguide/Limits.html](Amazon Dynamo DB) does; Dynamo DB allows - characters and digits 0-9 for table names, and attributes can be any UTF-8 character.
This is something that we should take into account, as other users of this library may also be using names that are not allowed by H2Data but allowed by Dynamo DB.
Waiting time is too short in ReRegion, should be at least a few seconds.
There are plenty of non-trivial methods that are actively used across our codebase, but none of them are tested.
We're looking to migrate the S3Auth project to jcabi-dynamo (yegor256/s3auth#90). In jcabi-dynamo, there doesn't appear to be any support for deleting items:
final AmazonDynamoDB amazon = this.client.get();
amazon.deleteItem(
new DeleteItemRequest(
this.table,
new ImmutableMap.Builder<String, AttributeValue>()
.put(DefaultDynamo.NAME, new AttributeValue(domain.name()))
.build()
)
);What I end up doing is that I get the AmazonDynamoDB instance from Region. Can we add support for it in jcabi-dynamo?
mvn qulice:check -PquliceLine does not match expected header line of ' * BSD License'. (HeaderCheck) messages.This is a known bug of qulice configuration in parent-0.31 (jcabi/jcabi-parent#19), accessed via jcabi-0.16. Suggested action is waiting until jcabi/jcabi#297 fix is released and upgrading jcabi version.
migrated from jcabi/jcabi#276
Let's implement a class com.jcabi.dynamo.Throughput, which would be able to change throughput of a table according to certain parameters of elasticity/scalability. For example:
final Region region = //...
final Table table = region.table("my-users");
new Throughput(table).adjust();The class is intended to be executed regularly (every few minutes). It has to use the same AWS credentials to access CloudWatch metrics.
If you use H2Data with column names with dots such as user.urn, domain.name, domain.key etc. in a unit test like com.s3auth.hosts.DefaultDynamoTest#loadsDynamoConfiguration
public void loadsDynamoConfiguration() throws Exception {
final H2Data data = new H2Data().with(
TABLE,
new String[]
{
DefaultDynamo.USER,
},
new String[]
{
DefaultDynamo.NAME,
DefaultDynamo.KEY,
DefaultDynamo.SECRET,
DefaultDynamo.REGION,
DefaultDynamo.BUCKET,
DefaultDynamo.SYSLOG,
}
);
for (int num = 0; num < Tv.TWENTY; ++num) {
data.put(
TABLE,
new Attributes(
this.item()
)
);
}
final Region region = new MkRegion(data);
final RegionCreator regionCreator = Mockito.mock(RegionCreator.class);
Mockito.when(regionCreator.createRegion()).thenReturn(region);
final DefaultDynamo dynamo = new DefaultDynamo(
regionCreator, TABLE
);
final int size = dynamo.load().size();
MatcherAssert.assertThat(
dynamo.load().size(),
Matchers.is(size)
);
dynamo.add(new URN("urn:test:alpha"), new DomainMocker().mock());
MatcherAssert.assertThat(
dynamo.load().size(),
Matchers.is(size + 1)
);
dynamo.close();
}
then during the test run you get an exception like this:
[[0;31mERROR[m] com.jcabi.jdbc.JdbcSession: #execute(): thrown java.sql.SQLException(org.h2.jdbc.JdbcSQLException: Unbekannter Datentyp: "."
Unknown data type: "."; SQL statement:
CREATE TABLE table (user.urn VARCHAR PRIMARY KEY,domain.name CLOB,domain.key CLOB,domain.secret CLOB,domain.region CLOB,domain.bucket CLOB,domain.syslog CLOB) [50004-176]) out of com.jcabi.jdbc.JdbcSession#run[418] in 732ms
java.io.IOException: java.sql.SQLException: org.h2.jdbc.JdbcSQLException: Unbekannter Datentyp: "."
Unknown data type: "."; SQL statement:
CREATE TABLE table (user.urn VARCHAR PRIMARY KEY,domain.name CLOB,domain.key CLOB,domain.secret CLOB,domain.region CLOB,domain.bucket CLOB,domain.syslog CLOB) [50004-176]
at com.jcabi.dynamo.mock.H2Data.with_aroundBody6(H2Data.java:291)
at com.jcabi.dynamo.mock.H2Data$AjcClosure7.run(H2Data.java:1)
at org.aspectj.runtime.reflect.JoinPointImpl.proceed(JoinPointImpl.java:149)
at com.jcabi.aspects.aj.MethodLogger.wrap(MethodLogger.java:212)
at com.jcabi.aspects.aj.MethodLogger.ajc$inlineAccessMethod$com_jcabi_aspects_aj_MethodLogger$com_jcabi_aspects_aj_MethodLogger$wrap(MethodLogger.java:1)
at com.jcabi.aspects.aj.MethodLogger.wrapClass(MethodLogger.java:136)
at com.jcabi.dynamo.mock.H2Data.with(H2Data.java:269)
at com.s3auth.hosts.DefaultDynamoTest.loadsDynamoConfiguration(DefaultDynamoTest.java:68)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at org.junit.runners.model.FrameworkMethod$1.runReflectiveCall(FrameworkMethod.java:50)
at org.junit.internal.runners.model.ReflectiveCallable.run(ReflectiveCallable.java:12)
at org.junit.runners.model.FrameworkMethod.invokeExplosively(FrameworkMethod.java:47)
at org.junit.internal.runners.statements.InvokeMethod.evaluate(InvokeMethod.java:17)
at org.junit.runners.ParentRunner.runLeaf(ParentRunner.java:325)
at org.junit.runners.BlockJUnit4ClassRunner.runChild(BlockJUnit4ClassRunner.java:78)
at org.junit.runners.BlockJUnit4ClassRunner.runChild(BlockJUnit4ClassRunner.java:57)
at org.junit.runners.ParentRunner$3.run(ParentRunner.java:290)
at org.junit.runners.ParentRunner$1.schedule(ParentRunner.java:71)
at org.junit.runners.ParentRunner.runChildren(ParentRunner.java:288)
at org.junit.runners.ParentRunner.access$000(ParentRunner.java:58)
at org.junit.runners.ParentRunner$2.evaluate(ParentRunner.java:268)
at org.junit.runners.ParentRunner.run(ParentRunner.java:363)
at org.junit.runner.JUnitCore.run(JUnitCore.java:137)
at com.intellij.junit4.JUnit4IdeaTestRunner.startRunnerWithArgs(JUnit4IdeaTestRunner.java:74)
at com.intellij.rt.execution.junit.JUnitStarter.prepareStreamsAndStart(JUnitStarter.java:202)
at com.intellij.rt.execution.junit.JUnitStarter.main(JUnitStarter.java:65)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
at com.intellij.rt.execution.application.AppMain.main(AppMain.java:120)
Caused by: java.sql.SQLException: org.h2.jdbc.JdbcSQLException: Unbekannter Datentyp: "."
Unknown data type: "."; SQL statement:
CREATE TABLE table (user.urn VARCHAR PRIMARY KEY,domain.name CLOB,domain.key CLOB,domain.secret CLOB,domain.region CLOB,domain.bucket CLOB,domain.syslog CLOB) [50004-176]
at com.jcabi.jdbc.JdbcSession.run(JdbcSession.java:418)
at com.jcabi.jdbc.JdbcSession.execute_aroundBody12(JdbcSession.java:329)
at com.jcabi.jdbc.JdbcSession$AjcClosure13.run(JdbcSession.java:1)
at org.aspectj.runtime.reflect.JoinPointImpl.proceed(JoinPointImpl.java:149)
at com.jcabi.aspects.aj.MethodLogger.wrap(MethodLogger.java:212)
at com.jcabi.aspects.aj.MethodLogger.ajc$inlineAccessMethod$com_jcabi_aspects_aj_MethodLogger$com_jcabi_aspects_aj_MethodLogger$wrap(MethodLogger.java:1)
at com.jcabi.aspects.aj.MethodLogger.wrapClass(MethodLogger.java:136)
at com.jcabi.jdbc.JdbcSession.execute(JdbcSession.java:329)
at com.jcabi.dynamo.mock.H2Data.with_aroundBody6(H2Data.java:289)
... 33 more
Caused by: org.h2.jdbc.JdbcSQLException: Unbekannter Datentyp: "."
Unknown data type: "."; SQL statement:
CREATE TABLE table (user.urn VARCHAR PRIMARY KEY,domain.name CLOB,domain.key CLOB,domain.secret CLOB,domain.region CLOB,domain.bucket CLOB,domain.syslog CLOB) [50004-176]
at org.h2.message.DbException.getJdbcSQLException(DbException.java:344)
at org.h2.message.DbException.get(DbException.java:178)
at org.h2.message.DbException.get(DbException.java:154)
at org.h2.command.Parser.parseColumnWithType(Parser.java:3963)
at org.h2.command.Parser.parseColumnForTable(Parser.java:3826)
at org.h2.command.Parser.parseCreateTable(Parser.java:5723)
at org.h2.command.Parser.parseCreate(Parser.java:4122)
at org.h2.command.Parser.parsePrepared(Parser.java:351)
at org.h2.command.Parser.parse(Parser.java:306)
at org.h2.command.Parser.parse(Parser.java:278)
at org.h2.command.Parser.prepareCommand(Parser.java:243)
at org.h2.engine.Session.prepareLocal(Session.java:442)
at org.h2.engine.Session.prepareCommand(Session.java:384)
at org.h2.jdbc.JdbcConnection.prepareCommand(JdbcConnection.java:1188)
at org.h2.jdbc.JdbcPreparedStatement.<init>(JdbcPreparedStatement.java:73)
at org.h2.jdbc.JdbcConnection.prepareStatement(JdbcConnection.java:276)
at com.jcabi.jdbc.JdbcSession$3.statement(JdbcSession.java:341)
at com.jcabi.jdbc.JdbcSession.run(JdbcSession.java:398)
... 41 more
[[0;31mERROR[m] com.jcabi.dynamo.mock.H2Data: #with('table', ['user.urn'], ['domain.name', 'domain.key', 'domain.secret', 'domain.region', 'domain.bucket', 'domain.syslog']): thrown java.io.IOException(java.sql.SQLException: org.h2.jdbc.JdbcSQLException: Unbekannter Datentyp: "."
Unknown data type: "."; SQL statement:
CREATE TABLE table (user.urn VARCHAR PRIMARY KEY,domain.name CLOB,domain.key CLOB,domain.secret CLOB,domain.region CLOB,domain.bucket CLOB,domain.syslog CLOB) [50004-176]) out of com.jcabi.dynamo.mock.H2Data#with_aroundBody6[291] in 5s
Please make sure that jcabi-dynamo can work with column names that contain periods (e. g. by replacing the periods by dots transparently to the user).
Hi Yergor,
I am trying with storing log files into Dynamodb. what I did:
I created one class 'DynamoAppender' which extends 'AppenderSkeleton' and added jar 'jcabi-dynamo-0.8.jar' into it. and then I created a jar file of this class. then I created a new application and added the newly created jar file into it. and added a log4j property file into the application. these are the errors I am getting when I am trying with the given java file and log4j.properties.
please tell me a solution for this.
Thanks....
Nimms
ERRORS
---------------
javax.servlet.ServletException: Servlet execution threw an exception
root cause
java.lang.NoClassDefFoundError: javax/validation/ConstraintViolationException
com.jcabi.dynamo.Credentials$Simple.<init>(Credentials.java:99)
com.Vehicle.dynamodbAppender.DynamoAppender.append(DynamoAppender.java:36)
org.apache.log4j.AppenderSkeleton.doAppend(AppenderSkeleton.java:251)
org.apache.log4j.helpers.AppenderAttachableImpl.appendLoopOnAppenders(AppenderAttachableImpl.java:66)
org.apache.log4j.Category.callAppenders(Category.java:206)
org.apache.log4j.Category.forcedLog(Category.java:391)
org.apache.log4j.Category.info(Category.java:666)
com.Vehicle.web.FrontController.doGet(FrontController.java:42)
javax.servlet.http.HttpServlet.service(HttpServlet.java:617)
javax.servlet.http.HttpServlet.service(HttpServlet.java:717)
root cause
java.lang.ClassNotFoundException: javax.validation.ConstraintViolationException
org.apache.catalina.loader.WebappClassLoader.loadClass(WebappClassLoader.java:1680)
org.apache.catalina.loader.WebappClassLoader.loadClass(WebappClassLoader.java:1526)
com.jcabi.dynamo.Credentials$Simple.<init>(Credentials.java:99)
com.Vehicle.dynamodbAppender.DynamoAppender.append(DynamoAppender.java:36)
org.apache.log4j.AppenderSkeleton.doAppend(AppenderSkeleton.java:251)
org.apache.log4j.helpers.AppenderAttachableImpl.appendLoopOnAppenders(AppenderAttachableImpl.java:66)
org.apache.log4j.Category.callAppenders(Category.java:206)
org.apache.log4j.Category.forcedLog(Category.java:391)
org.apache.log4j.Category.info(Category.java:666)
com.mindtree.web.FrontController.doGet(FrontController.java:42)
javax.servlet.http.HttpServlet.service(HttpServlet.java:617)
javax.servlet.http.HttpServlet.service(HttpServlet.java:717)
_____________________________________________________________________________________
Sep 25, 2013 12:06:02 PM org.apache.catalina.core.AprLifecycleListener init
INFO: The APR based Apache Tomcat Native library which allows optimal performance in production environments was not found on the java.library.path: C:\Program Files\Java\jre6\bin;.;C:\windows\Sun\Java\bin;C:\windows\system32;C:\windows;C:/Program Files/Java/jre6/bin/client;C:/Program Files/Java/jre6/bin;C:/Program Files/Java/jre6/lib/i386;%M2%;C:\windows\system32;C:\windows;C:\windows\System32\Wbem;C:\windows\System32\WindowsPowerShell\v1.0\;C:\Program Files\TortoiseSVN\bin;%JAVA_HOME%\bin;C:\TC\BIN;C:\Program Files\Apache Software Foundation\apache-maven-3.0.4\bin;C:\Program Files\Java\jdk1.6.0_25\bin;D:\Temp\SOFTWARES\eclipse-jee-juno-win32\eclipse;
Sep 25, 2013 12:06:03 PM org.apache.tomcat.util.digester.SetPropertiesRule begin
WARNING: [SetPropertiesRule]{Server/Service/Engine/Host/Context} Setting property 'source' to 'org.eclipse.jst.jee.server:VehicleRental' did not find a matching property.
Sep 25, 2013 12:06:03 PM org.apache.coyote.http11.Http11Protocol init
INFO: Initializing Coyote HTTP/1.1 on http-8080
Sep 25, 2013 12:06:03 PM org.apache.catalina.startup.Catalina load
INFO: Initialization processed in 983 ms
Sep 25, 2013 12:06:03 PM org.apache.catalina.core.StandardService start
INFO: Starting service Catalina
Sep 25, 2013 12:06:03 PM org.apache.catalina.core.StandardEngine start
INFO: Starting Servlet Engine: Apache Tomcat/6.0.33
Sep 25, 2013 12:06:03 PM org.apache.coyote.http11.Http11Protocol start
INFO: Starting Coyote HTTP/1.1 on http-8080
Sep 25, 2013 12:06:03 PM org.apache.jk.common.ChannelSocket init
INFO: JK: ajp13 listening on /0.0.0.0:8009
Sep 25, 2013 12:06:03 PM org.apache.jk.server.JkMain start
INFO: Jk running ID=0 time=0/48 config=null
Sep 25, 2013 12:06:03 PM org.apache.catalina.startup.Catalina start
INFO: Server startup in 651 ms
log4j:WARN No such property [file] in com.Vehicle.dynamodbAppender.DynamoAppender.
log4j:WARN No such property [maxBackupIndex] in com.mindtree.dynamodbAppender.DynamoAppender.
log4j:WARN No such property [maxFileSize] in com.Vehicle.dynamodbAppender.DynamoAppender.
SLF4J: The requested version 1.6 by your slf4j binding is not compatible with [1.5.5, 1.5.6, 1.5.7, 1.5.8]
SLF4J: See http://www.slf4j.org/codes.html#version_mismatch for further details.
Sep 25, 2013 12:06:06 PM org.apache.catalina.core.StandardWrapperValve invoke
SEVERE: Servlet.service() for servlet FrontController threw exception
java.lang.ClassNotFoundException: javax.validation.ConstraintViolationException
at org.apache.catalina.loader.WebappClassLoader.loadClass(WebappClassLoader.java:1680)
at org.apache.catalina.loader.WebappClassLoader.loadClass(WebappClassLoader.java:1526)
at com.jcabi.dynamo.Credentials$Simple.<init>(Credentials.java:99)
at com.Vehicle.dynamodbAppender.DynamoAppender.append(DynamoAppender.java:36)
at org.apache.log4j.AppenderSkeleton.doAppend(AppenderSkeleton.java:251)
at org.apache.log4j.helpers.AppenderAttachableImpl.appendLoopOnAppenders(AppenderAttachableImpl.java:66)
at org.apache.log4j.Category.callAppenders(Category.java:206)
at org.apache.log4j.Category.forcedLog(Category.java:391)
at org.apache.log4j.Category.info(Category.java:666)
at com.Vehicle.web.FrontController.doGet(FrontController.java:42)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:617)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:717)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:290)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)
at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:233)
at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:191)
at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:127)
at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:102)
at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:109)
at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:291)
at org.apache.coyote.http11.Http11Processor.process(Http11Processor.java:859)
at org.apache.coyote.http11.Http11Protocol$Http11ConnectionHandler.process(Http11Protocol.java:602)
at org.apache.tomcat.util.net.JIoEndpoint$Worker.run(JIoEndpoint.java:489)
at java.lang.Thread.run(Unknown Source)
DynamoAppender.Java:
/**
*
*/
package com.vehicle.dynamodbAppender;
import org.apache.log4j.AppenderSkeleton;
import org.apache.log4j.helpers.LogLog;
import org.apache.log4j.spi.LoggingEvent;
import com.jcabi.dynamo.Attributes;
import com.jcabi.dynamo.Credentials;
import com.jcabi.dynamo.Region;
import com.jcabi.dynamo.Table;
/**
* @author Nimms
*
*/
public class DynamoAppender extends AppenderSkeleton{
@Override
public void close() {
// TODO Auto-generated method stub
}
@Override
public boolean requiresLayout() {
// TODO Auto-generated method stub
return true;
}
@Override
protected void append(LoggingEvent event) {
Credentials credentials = new Credentials.Simple("My-Accesskey", "My-Secretkey");
Region region = new Region.Simple(credentials);
LogLog.debug("Putting Into dynamoDb");
Table table = region.table("AppLog");
LogLog.debug("Putting into db table");
table.put( new Attributes()
.with("time", System.currentTimeMillis())
.with("message", this.layout.format(event))
);
}
}log4j.properties:
# Root logger option
log4j.rootLogger=DEBUG, file
# Direct log messages to a log file
log4j.appender.file=org.apache.log4j.RollingFileAppender
log4j.appender.file=com.vehicle.dynamodbAppender.DynamoAppender
log4j.appender.file.File=d:/122.log
log4j.appender.file.MaxFileSize=1MB
log4j.appender.file.MaxBackupIndex=1
log4j.appender.file.layout=org.apache.log4j.PatternLayout
log4j.appender.file.layout.ConversionPattern=%d{yyyy-MM-dd HH:mm:ss} %-5p %c{1}:%L - %m%n
# Direct log messages to stdout
log4j.appender.stdout=org.apache.log4j.ConsoleAppender
log4j.appender.stdout.Target=System.out
log4j.appender.stdout.layout=org.apache.log4j.PatternLayout
log4j.appender.stdout.layout.ConversionPattern=%d{yyyy-MM-dd HH:mm:ss} %-5p %c{1}:%L - %m%n
The current documentation of the Region interface is not complete as it doesn't specify whether or not the region must be shut down after all operations are finished.
How to fix
In the header comments of the com.jcabi.dynamo.Region describe whether or not code similar to one shown below must be called after all operations have been completed.
protected void shutdownAws(final Region region) {
final AmazonDynamoDB aws = region.aws();
if (aws != null)
{
aws.shutdown();
}
}
Suppose I want to create two tables that somehow relate to each other. Current H2Data implementation only allows one table to be created using the with method:
new H2Data().with("users", new String[] {"name"}, new String[0])I believe that a good fit would be something like:
new H2Data()
.with("users", new String[] {"name"}, new String[0])
.with("tenants", new String[] {"id"}, new String[0])
.get() // or done() or build() or something elseReIterator shouldn't retry on java.util.NoSuchElementException
I don't know whether this framework born earlier than the official ORM class.
So can you give more introductions compare to the official ORM class as below:
http://docs.aws.amazon.com/amazondynamodb/latest/developerguide/JavaORMDynamoDBMapper.html
Thanks a lot
Review our existing source code and all other technical artifacts and report at least 8 bugs. More about such reviews you can read here. The task will be closed once we have that bugs reported and classified. Don't forget to add itr tag to each of them.
Please, publish a new release 0.19 (or higher). Don't forget to update us here regularly (at least once a week), as explained in this article.
Hi,
I forked, cloned and ran all mvn tests in the project. As result there were no failing tests.
After I commented out @ignore annotation for iteratesItems() and iteratesItemsAndDeletes() in src/test/java/com/jcabi/dynamo/AwsIteratorITCase.java
and run: mvn test -Dtest=com.jcabi.dynamo.AwsIteratorITCase
they failed with a NumberFormatException wrapped into ExceptionInInitializerError:
ava.lang.ExceptionInInitializerError
at com.jcabi.dynamo.AwsIteratorITCase.iteratesItems(AwsIteratorITCase.java:62)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:57)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.lang.reflect.Method.invoke(Method.java:606)
at org.junit.runners.model.FrameworkMethod$1.runReflectiveCall(FrameworkMethod.java:50)
at org.junit.internal.runners.model.ReflectiveCallable.run(ReflectiveCallable.java:12)
at org.junit.runners.model.FrameworkMethod.invokeExplosively(FrameworkMethod.java:47)
at org.junit.internal.runners.statements.InvokeMethod.evaluate(InvokeMethod.java:17)
at org.junit.runners.ParentRunner.runLeaf(ParentRunner.java:325)
at org.junit.runners.BlockJUnit4ClassRunner.runChild(BlockJUnit4ClassRunner.java:78)
at org.junit.runners.BlockJUnit4ClassRunner.runChild(BlockJUnit4ClassRunner.java:57)
at org.junit.runners.ParentRunner$3.run(ParentRunner.java:290)
at org.apache.maven.surefire.junitcore.pc.Scheduler$1.run(Scheduler.java:318)
at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:471)
at java.util.concurrent.FutureTask.run(FutureTask.java:262)
at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1145)
at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:615)
at java.lang.Thread.run(Thread.java:745)
Caused by: java.lang.NumberFormatException: null
at java.lang.Integer.parseInt(Integer.java:454)
at java.lang.Integer.parseInt(Integer.java:527)
at com.jcabi.dynamo.RegionMock.<clinit>(RegionMock.java:63)
... 19 more
It looks like failsafe.port environment variable is missing. Where can I find this variable? Or may be I'm doing something wrong?
Puzzle 56-be65f863 in src/test/java/com/jcabi/dynamo/AwsIteratorITCase.java:51-53 has to be resolved: Integration test fail when adding @NotNull constraint this should be fixed in methods AwsIteratorITCase.iteratesItems() and AwsIteratorITCase.iteratesItemsAndDeletes(). Also see RegionITCase... The puzzle was created by tkjee on 5-Oct-2015.
If you have any technical questions, don't ask me, submit new tickets instead
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