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authorTschaen, Brendan (bt054f) <bt054f@att.com>2018-06-26 16:32:37 -0400
committerTschaen, Brendan (bt054f) <bt054f@att.com>2018-06-26 16:44:59 -0400
commit5a28a331688c5578fef9c64d462d07cbae6797da (patch)
tree038fd0c1bb56bf652d574778504f1bf4cb0f4ccf
parent5e5d6ed9badebfbc1cc65a90e3de8dad232f9e42 (diff)
Add voting app exampleHEADmaster
Change-Id: Ife1e6ea10cf74e3495ed72bc14a77179665ca327 Issue-ID: MUSIC-82 Signed-off-by: Tschaen, Brendan (bt054f) <bt054f@att.com>
-rw-r--r--examples/VotingApp/README.md31
-rw-r--r--examples/VotingApp/pom.xml92
-rw-r--r--examples/VotingApp/src/main/java/main/JsonDelete.java61
-rw-r--r--examples/VotingApp/src/main/java/main/JsonInsert.java67
-rw-r--r--examples/VotingApp/src/main/java/main/JsonKeySpace.java58
-rw-r--r--examples/VotingApp/src/main/java/main/JsonTable.java55
-rw-r--r--examples/VotingApp/src/main/java/main/MusicConnector.java76
-rw-r--r--examples/VotingApp/src/main/java/main/Util.java6
-rw-r--r--examples/VotingApp/src/main/java/main/VotingApp.java513
9 files changed, 959 insertions, 0 deletions
diff --git a/examples/VotingApp/README.md b/examples/VotingApp/README.md
new file mode 100644
index 0000000..bcd37b9
--- /dev/null
+++ b/examples/VotingApp/README.md
@@ -0,0 +1,31 @@
+
+The voting app for MUSIC illustrates the features of MUSIC as a
+multi-site state management
+service. It is a program that
+maintains state in MUSIC in the form of a vote-count table that has two columns, the candidateName
+and his voteCount. To the external client that is using the voting app to update votes, the
+votingApp provides a simple function to update the
+votecount of the candidate in an exclusive manner. This is possible because of the locking service
+in MUSIC. Since each candidate is a key in MUSIC, the votingapp simply acquires the geo-distributed
+lock and only then upates the count. This guarantees correctness even when clients access different
+end-points across data centers. Further since state is replicated correctly across data-centers,
+even when one of the data centers fail, functioning can continue simply by using the MUSIC end point
+in the other data center.
+
+The main function in the VotingApp.java is emulating clients from different data centers by randomly
+chosing MUSIC end points. By updating vote counts
+randomly using different MUSIC end points and still receiving the correct total count when doing a
+read, the main function indicates the multi-site capability of MUSIC.
+
+
+To run the application, make sure you have onboarded the application using music's admin api.
+A curl call using the default values would be:
+curl -X POST \
+ http://localhost:8080/MUSIC/rest/v2/admin/onboardAppWithMusic \
+ -H 'Content-Type: application/json' \
+ -d '{
+"appname" : "votingapp",
+"userId" : "abc123d",
+"password" : "password",
+"isAAF" : false
+}'
diff --git a/examples/VotingApp/pom.xml b/examples/VotingApp/pom.xml
new file mode 100644
index 0000000..87cac6c
--- /dev/null
+++ b/examples/VotingApp/pom.xml
@@ -0,0 +1,92 @@
+<!--
+/*
+ *
+This licence applies to all files in this repository unless otherwise specifically
+stated inside of the file.
+
+ Copyright (c) 2016 AT&T Intellectual Property
+
+ Licensed under the Apache License, Version 2.0 (the "License");
+ you may not use this file except in compliance with the License.
+ You may obtain a copy of the License at:
+
+ http://www.apache.org/licenses/LICENSE-2.0
+
+ Unless required by applicable law or agreed to in writing, software
+ distributed under the License is distributed on an "AS IS" BASIS,
+ WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ See the License for the specific language governing permissions and
+ limitations under the License.
+
+ */
+-->
+<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
+ <modelVersion>4.0.0</modelVersion>
+ <groupId>com.att.reserarch.VoteAppForMUSIC</groupId>
+ <artifactId>VoteAppForMUSIC</artifactId>
+ <version>0.0.1-SNAPSHOT</version>
+
+
+ <repositories>
+ <repository>
+ <id>maven2-repository.java.net</id>
+ <name>Java.net Repository for Maven</name>
+ <url>http://download.java.net/maven/2/</url>
+ <layout>default</layout>
+ </repository>
+ </repositories>
+
+ <dependencies>
+
+ <dependency>
+ <groupId>com.sun.jersey</groupId>
+ <artifactId>jersey-server</artifactId>
+ <version>1.9</version>
+ </dependency>
+ <dependency>
+ <groupId>com.sun.jersey</groupId>
+ <artifactId>jersey-json</artifactId>
+ <version>1.18.1</version>
+</dependency>
+<dependency>
+ <groupId>com.owlike</groupId>
+ <artifactId>genson</artifactId>
+ <version>0.99</version>
+</dependency>
+ <dependency>
+ <groupId>com.sun.jersey</groupId>
+ <artifactId>jersey-client</artifactId>
+ <version>1.9</version>
+ </dependency>
+
+ <dependency>
+ <groupId>com.sun.jersey</groupId>
+ <artifactId>jersey-json</artifactId>
+ <version>1.9</version>
+ </dependency>
+
+ <dependency>
+ <groupId>com.sun.jersey</groupId>
+ <artifactId>jersey-bundle</artifactId>
+ <version>1.18</version>
+ </dependency>
+
+ <dependency>
+ <groupId>com.googlecode.json-simple</groupId>
+ <artifactId>json-simple</artifactId>
+ <version>1.1</version>
+ </dependency>
+ <dependency>
+ <groupId>com.datastax.cassandra</groupId>
+ <artifactId>cassandra-driver-core</artifactId>
+ <version>3.0.0</version>
+ </dependency>
+ <dependency>
+ <groupId>org.apache.zookeeper</groupId>
+ <artifactId>zookeeper</artifactId>
+ <version>3.4.6</version>
+ </dependency>
+
+ </dependencies>
+
+</project> \ No newline at end of file
diff --git a/examples/VotingApp/src/main/java/main/JsonDelete.java b/examples/VotingApp/src/main/java/main/JsonDelete.java
new file mode 100644
index 0000000..9b75f87
--- /dev/null
+++ b/examples/VotingApp/src/main/java/main/JsonDelete.java
@@ -0,0 +1,61 @@
+/*
+ *
+This licence applies to all files in this repository unless otherwise specifically
+stated inside of the file.
+
+ ---------------------------------------------------------------------------
+ Copyright (c) 2016 AT&T Intellectual Property
+
+ Licensed under the Apache License, Version 2.0 (the "License");
+ you may not use this file except in compliance with the License.
+ You may obtain a copy of the License at:
+
+ http://www.apache.org/licenses/LICENSE-2.0
+
+ Unless required by applicable law or agreed to in writing, software
+ distributed under the License is distributed on an "AS IS" BASIS,
+ WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ See the License for the specific language governing permissions and
+ limitations under the License.
+ ---------------------------------------------------------------------------
+
+ */
+package main;
+
+import java.util.ArrayList;
+import java.util.Map;
+
+public class JsonDelete {
+
+ private ArrayList<String> columns = null;
+ private Map<String,String> consistencyInfo;
+
+ public Map<String, String> getConsistencyInfo() {
+ return consistencyInfo;
+ }
+
+ public void setConsistencyInfo(Map<String, String> consistencyInfo) {
+ this.consistencyInfo = consistencyInfo;
+ }
+
+ public ArrayList<String> getColumns() {
+ return columns;
+ }
+ public void setColumns(ArrayList<String> columns) {
+ this.columns = columns;
+ }
+ String ttl, timestamp;
+
+ public String getTtl() {
+ return ttl;
+ }
+ public void setTtl(String ttl) {
+ this.ttl = ttl;
+ }
+ public String getTimestamp() {
+ return timestamp;
+ }
+ public void setTimestamp(String timestamp) {
+ this.timestamp = timestamp;
+ }
+}
diff --git a/examples/VotingApp/src/main/java/main/JsonInsert.java b/examples/VotingApp/src/main/java/main/JsonInsert.java
new file mode 100644
index 0000000..a2099c1
--- /dev/null
+++ b/examples/VotingApp/src/main/java/main/JsonInsert.java
@@ -0,0 +1,67 @@
+/*
+ *
+This licence applies to all files in this repository unless otherwise specifically
+stated inside of the file.
+
+ ---------------------------------------------------------------------------
+ Copyright (c) 2016 AT&T Intellectual Property
+
+ Licensed under the Apache License, Version 2.0 (the "License");
+ you may not use this file except in compliance with the License.
+ You may obtain a copy of the License at:
+
+ http://www.apache.org/licenses/LICENSE-2.0
+
+ Unless required by applicable law or agreed to in writing, software
+ distributed under the License is distributed on an "AS IS" BASIS,
+ WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ See the License for the specific language governing permissions and
+ limitations under the License.
+ ---------------------------------------------------------------------------
+
+ */
+package main;
+
+import java.util.Map;
+
+import org.codehaus.jackson.annotate.JsonIgnoreProperties;
+public class JsonInsert {
+
+ private Map<String,Object> values;
+ String ttl, timestamp;
+ private Map<String,Object> row_specification;
+ private Map<String,String> consistencyInfo;
+
+ public Map<String, String> getConsistencyInfo() {
+ return consistencyInfo;
+ }
+
+ public void setConsistencyInfo(Map<String, String> consistencyInfo) {
+ this.consistencyInfo = consistencyInfo;
+ }
+
+ public String getTtl() {
+ return ttl;
+ }
+ public void setTtl(String ttl) {
+ this.ttl = ttl;
+ }
+ public String getTimestamp() {
+ return timestamp;
+ }
+ public void setTimestamp(String timestamp) {
+ this.timestamp = timestamp;
+ }
+ public Map<String, Object> getValues() {
+ return values;
+ }
+ public void setValues(Map<String, Object> values) {
+ this.values = values;
+ }
+ public Map<String, Object> getRow_specification() {
+ return row_specification;
+ }
+ public void setRow_specification(Map<String, Object> row_specification) {
+ this.row_specification = row_specification;
+ }
+}
diff --git a/examples/VotingApp/src/main/java/main/JsonKeySpace.java b/examples/VotingApp/src/main/java/main/JsonKeySpace.java
new file mode 100644
index 0000000..ff7b6c6
--- /dev/null
+++ b/examples/VotingApp/src/main/java/main/JsonKeySpace.java
@@ -0,0 +1,58 @@
+/*
+ *
+This licence applies to all files in this repository unless otherwise specifically
+stated inside of the file.
+
+ ---------------------------------------------------------------------------
+ Copyright (c) 2016 AT&T Intellectual Property
+
+ Licensed under the Apache License, Version 2.0 (the "License");
+ you may not use this file except in compliance with the License.
+ You may obtain a copy of the License at:
+
+ http://www.apache.org/licenses/LICENSE-2.0
+
+ Unless required by applicable law or agreed to in writing, software
+ distributed under the License is distributed on an "AS IS" BASIS,
+ WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ See the License for the specific language governing permissions and
+ limitations under the License.
+ ---------------------------------------------------------------------------
+
+ */
+package main;
+
+import java.util.Map;
+
+
+public class JsonKeySpace {
+ private Map<String,Object> replicationInfo;
+ private String durabilityOfWrites;
+ private Map<String,String> consistencyInfo;
+
+ public Map<String, String> getConsistencyInfo() {
+ return consistencyInfo;
+ }
+
+ public void setConsistencyInfo(Map<String, String> consistencyInfo) {
+ this.consistencyInfo = consistencyInfo;
+ }
+
+ public Map<String, Object> getReplicationInfo() {
+ return replicationInfo;
+ }
+
+ public void setReplicationInfo(Map<String, Object> replicationInfo) {
+ this.replicationInfo = replicationInfo;
+ }
+
+ public String getDurabilityOfWrites() {
+ return durabilityOfWrites;
+ }
+ public void setDurabilityOfWrites(String durabilityOfWrites) {
+ this.durabilityOfWrites = durabilityOfWrites;
+ }
+
+
+
+}
diff --git a/examples/VotingApp/src/main/java/main/JsonTable.java b/examples/VotingApp/src/main/java/main/JsonTable.java
new file mode 100644
index 0000000..66171af
--- /dev/null
+++ b/examples/VotingApp/src/main/java/main/JsonTable.java
@@ -0,0 +1,55 @@
+/*
+ *
+This licence applies to all files in this repository unless otherwise specifically
+stated inside of the file.
+
+ ---------------------------------------------------------------------------
+ Copyright (c) 2016 AT&T Intellectual Property
+
+ Licensed under the Apache License, Version 2.0 (the "License");
+ you may not use this file except in compliance with the License.
+ You may obtain a copy of the License at:
+
+ http://www.apache.org/licenses/LICENSE-2.0
+
+ Unless required by applicable law or agreed to in writing, software
+ distributed under the License is distributed on an "AS IS" BASIS,
+ WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ See the License for the specific language governing permissions and
+ limitations under the License.
+ ---------------------------------------------------------------------------
+
+ */
+package main;
+import java.util.Map;
+
+public class JsonTable {
+ private Map<String,String> fields;
+ private Map<String, Object> properties;
+ private Map<String,String> consistencyInfo;
+
+
+ public Map<String, String> getConsistencyInfo() {
+ return consistencyInfo;
+ }
+
+ public void setConsistencyInfo(Map<String, String> consistencyInfo) {
+ this.consistencyInfo = consistencyInfo;
+ }
+
+ public Map<String, Object> getProperties() {
+ return properties;
+ }
+
+ public void setProperties(Map<String, Object> properties) {
+ this.properties = properties;
+ }
+
+ public Map<String, String> getFields() {
+ return fields;
+ }
+
+ public void setFields(Map<String, String> fields) {
+ this.fields = fields;
+ }
+}
diff --git a/examples/VotingApp/src/main/java/main/MusicConnector.java b/examples/VotingApp/src/main/java/main/MusicConnector.java
new file mode 100644
index 0000000..d6ed20b
--- /dev/null
+++ b/examples/VotingApp/src/main/java/main/MusicConnector.java
@@ -0,0 +1,76 @@
+/*
+ *
+This licence applies to all files in this repository unless otherwise specifically
+stated inside of the file.
+
+ ---------------------------------------------------------------------------
+ Copyright (c) 2016 AT&T Intellectual Property
+
+ Licensed under the Apache License, Version 2.0 (the "License");
+ you may not use this file except in compliance with the License.
+ You may obtain a copy of the License at:
+
+ http://www.apache.org/licenses/LICENSE-2.0
+
+ Unless required by applicable law or agreed to in writing, software
+ distributed under the License is distributed on an "AS IS" BASIS,
+ WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ See the License for the specific language governing permissions and
+ limitations under the License.
+ ---------------------------------------------------------------------------
+
+ */
+package main;
+
+import java.io.IOException;
+import java.net.InetAddress;
+import java.net.UnknownHostException;
+import java.util.Random;
+
+public class MusicConnector {
+
+ //change this to point to relevant cluster
+ public String[] musicNodes;
+
+ public MusicConnector(String[] musicNodes){
+ this.musicNodes = musicNodes;
+ }
+
+ private String getMusicNodeIp(){
+ Random r = new Random();
+ int index = r.nextInt(musicNodes.length);
+ return musicNodes[index];
+ }
+
+ public String getMusicNodeURL(){
+ String musicurl = "http://"+getMusicNodeIp()+":8080/MUSIC/rest/v2";
+ return musicurl;
+ }
+
+ public boolean isHostUp(String serverAddress) {
+ Boolean isUp = false;
+ try {
+ InetAddress inet = InetAddress.getByName(serverAddress);
+ isUp = inet.isReachable(1000);
+ } catch (UnknownHostException e) {
+ // TODO Auto-generated catch block
+ e.printStackTrace();
+ } catch (IOException e) {
+ // TODO Auto-generated catch block
+ e.printStackTrace();
+ }
+ return isUp;
+ }
+
+ /*
+ private static String getMusicNodeIp(){
+
+ //return "54.224.168.13";
+ return bigSiteMusicNode;
+ String serverAddress;
+ serverAddress = agaveMusicNode;
+ while(isHostUp(serverAddress) != true)
+ serverAddress = toggle(serverAddress);
+ return serverAddress;
+ }*/
+}
diff --git a/examples/VotingApp/src/main/java/main/Util.java b/examples/VotingApp/src/main/java/main/Util.java
new file mode 100644
index 0000000..aefa9a3
--- /dev/null
+++ b/examples/VotingApp/src/main/java/main/Util.java
@@ -0,0 +1,6 @@
+package main;
+
+public class Util {
+ public static final String version="1.0.0";
+
+}
diff --git a/examples/VotingApp/src/main/java/main/VotingApp.java b/examples/VotingApp/src/main/java/main/VotingApp.java
new file mode 100644
index 0000000..e58c324
--- /dev/null
+++ b/examples/VotingApp/src/main/java/main/VotingApp.java
@@ -0,0 +1,513 @@
+/*
+ *
+This licence applies to all files in this repository unless otherwise specifically
+stated inside of the file.
+
+ ---------------------------------------------------------------------------
+ Copyright (c) 2016 AT&T Intellectual Property
+
+ Licensed under the Apache License, Version 2.0 (the "License");
+ you may not use this file except in compliance with the License.
+ You may obtain a copy of the License at:
+
+ http://www.apache.org/licenses/LICENSE-2.0
+
+ Unless required by applicable law or agreed to in writing, software
+ distributed under the License is distributed on an "AS IS" BASIS,
+ WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ See the License for the specific language governing permissions and
+ limitations under the License.
+ ---------------------------------------------------------------------------
+
+ */
+package main;
+import java.io.BufferedReader;
+import java.io.IOException;
+import java.io.InputStream;
+import java.io.InputStreamReader;
+import java.util.ArrayList;
+import java.util.HashMap;
+import java.util.Map;
+
+import javax.ws.rs.core.MediaType;
+
+import com.sun.jersey.api.client.Client;
+import com.sun.jersey.api.client.ClientResponse;
+import com.sun.jersey.api.client.WebResource;
+import com.sun.jersey.api.client.WebResource.Builder;
+import com.sun.jersey.api.client.config.ClientConfig;
+import com.sun.jersey.api.client.config.DefaultClientConfig;
+import com.sun.jersey.api.json.JSONConfiguration;
+
+public class VotingApp {
+ String keyspaceName;
+ ArrayList<String> lockNames;
+ MusicConnector musicHandle;
+ private final String version="1.0.0";
+
+ //UPDATE your onboarding information here
+ String namespace = "votingapp";
+ String userId = "abc123d";
+ String password = "password";
+
+ public VotingApp(String[] musicIps){
+ lockNames = new ArrayList<String>();
+ musicHandle = new MusicConnector(musicIps);
+ bootStrap();
+ }
+
+ /**
+ * Adds MUSIC's authentication headers into the webresource
+ * @param webResource
+ */
+ private Builder addMusicHeaders(WebResource webResource) {
+ Builder builder = webResource.accept(MediaType.APPLICATION_JSON).type(MediaType.APPLICATION_JSON);
+ if (!namespace.equals("")) {
+ builder.header("ns", namespace);
+ }
+ if (!userId.equals("")) {
+ builder.header("userId", userId);
+ }
+ if (!password.equals("")) {
+ builder.header("password", password);
+ }
+
+ return builder;
+ }
+
+ public void createVotingKeyspace(){
+ keyspaceName = "VotingAppForMusic";
+ System.out.println("Voting app version "+ version+" .....");
+ Map<String,Object> replicationInfo = new HashMap<String, Object>();
+ replicationInfo.put("class", "SimpleStrategy");
+ replicationInfo.put("replication_factor", 1);
+ String durabilityOfWrites="false";
+ Map<String,String> consistencyInfo= new HashMap<String, String>();
+ consistencyInfo.put("type", "eventual");
+ JsonKeySpace jsonKp = new JsonKeySpace();
+ jsonKp.setConsistencyInfo(consistencyInfo);
+ jsonKp.setDurabilityOfWrites(durabilityOfWrites);
+ jsonKp.setReplicationInfo(replicationInfo);
+
+ ClientConfig clientConfig = new DefaultClientConfig();
+
+ clientConfig.getFeatures().put(
+ JSONConfiguration.FEATURE_POJO_MAPPING, Boolean.TRUE);
+
+ Client client = Client.create(clientConfig);
+
+ WebResource webResource = client
+ .resource(musicHandle.getMusicNodeURL()+"/keyspaces/"+keyspaceName);
+
+ ClientResponse response = addMusicHeaders(webResource).accept("application/json")
+ .type("application/json").post(ClientResponse.class, jsonKp);
+ if (response.getStatus() < 200 || (response.getStatus() > 299 && response.getStatus()!=400)) { //supress keyspace already exists
+ Map<String, String> map = response.getEntity(Map.class);
+ throw new RuntimeException("Failed : HTTP error code : "+ response.getStatus() + "- " + map);
+ }
+
+ }
+
+ public void createVotingTable(){
+ Map<String,String> fields = new HashMap<String,String>();
+ fields.put("name", "text");
+ fields.put("count", "varint");
+ fields.put("PRIMARY KEY", "(name)");
+
+
+ Map<String,String> consistencyInfo= new HashMap<String, String>();
+ consistencyInfo.put("type", "eventual");
+
+ JsonTable jtab = new JsonTable();
+ jtab.setFields(fields);
+ jtab.setConsistencyInfo(consistencyInfo);
+
+ ClientConfig clientConfig = new DefaultClientConfig();
+
+ clientConfig.getFeatures().put(
+ JSONConfiguration.FEATURE_POJO_MAPPING, Boolean.TRUE);
+
+ Client client = Client.create(clientConfig);
+ String url = musicHandle.getMusicNodeURL()+"/keyspaces/"+keyspaceName+"/tables/votecount";
+ System.out.println("create url:"+url);
+ WebResource webResource = client
+ .resource(url);
+
+ ClientResponse response = addMusicHeaders(webResource).accept("application/json")
+ .type("application/json").post(ClientResponse.class, jtab);
+
+ System.out.println(response.getEntity(Map.class));
+ if (response.getStatus() < 200 || (response.getStatus() > 299 && response.getStatus()!=400))
+ throw new RuntimeException("Failed : HTTP error code : "+ response.getStatus());
+
+ }
+ private void checkMusicVersion(){
+ Client client = Client.create();
+ System.out.println(musicHandle.getMusicNodeURL()+"/version");
+
+
+// System.setProperty("sun.net.http.allowRestrictedHeaders", "true");
+ WebResource webResource = client
+ .resource(musicHandle.getMusicNodeURL()+"/version");
+
+
+ ClientResponse response = addMusicHeaders(webResource)
+ .accept(MediaType.APPLICATION_JSON).header("Connection", "close").get(ClientResponse.class);
+
+ if (response.getStatus() != 200) {
+ throw new RuntimeException("Failed : HTTP error code : "
+ + response.getStatus());
+ }
+
+ String output = response.getEntity(Map.class).toString();
+
+ System.out.println(output);
+
+ }
+
+ private void createEntryForCandidate(String candidateName){
+ Map<String,Object> values = new HashMap<String,Object>();
+ values.put("name",candidateName );
+ values.put("count",0);
+
+ Map<String,String> consistencyInfo= new HashMap<String, String>();
+ consistencyInfo.put("type", "eventual");
+
+ JsonInsert jIns = new JsonInsert();
+ jIns.setValues(values);
+ jIns.setConsistencyInfo(consistencyInfo);
+ ClientConfig clientConfig = new DefaultClientConfig();
+
+ clientConfig.getFeatures().put(
+ JSONConfiguration.FEATURE_POJO_MAPPING, Boolean.TRUE);
+
+ Client client = Client.create(clientConfig);
+
+ String url = musicHandle.getMusicNodeURL()+"/keyspaces/"+keyspaceName+"/tables/votecount/rows";
+ WebResource webResource = client
+ .resource(url);
+
+ ClientResponse response = addMusicHeaders(webResource).accept("application/json")
+ .type("application/json").post(ClientResponse.class, jIns);
+
+ if (response.getStatus() < 200 || response.getStatus() > 299)
+ throw new RuntimeException("Failed : HTTP error code : "+ response.getStatus()+"url:"+url+" candidate name:"+ candidateName);
+
+
+ }
+
+ private String createLock(String lockName){
+ Client client = Client.create();
+ String msg = musicHandle.getMusicNodeURL()+"/locks/create/"+lockName;
+ WebResource webResource = client.resource(msg);
+ System.out.println(msg);
+ WebResource.Builder wb = addMusicHeaders(webResource).accept(MediaType.APPLICATION_JSON);
+
+ ClientResponse response = wb.post(ClientResponse.class);
+
+ if (response.getStatus() != 200) {
+ throw new RuntimeException("Failed : HTTP error code : "+ response.getStatus()+"url:"+msg);
+ }
+
+ Map<String,Object> responseMap = response.getEntity(Map.class);
+
+ String lockid = ((Map<String,String>) responseMap.get("lock")).get("lock");
+// System.out.println("Server response .... \n");
+// System.out.println(output);
+ return lockid;
+ }
+
+ private boolean acquireLock(String lockId){
+ Client client = Client.create();
+ String msg = musicHandle.getMusicNodeURL()+"/locks/acquire/"+lockId;
+ System.out.println(msg);
+ WebResource webResource = client.resource(msg);
+
+
+ WebResource.Builder wb = addMusicHeaders(webResource).accept(MediaType.APPLICATION_JSON);
+
+ ClientResponse response = wb.get(ClientResponse.class);
+
+ Map<String, Object> responseMap = response.getEntity(Map.class);
+
+ if (response.getStatus() != 200) {
+ throw new RuntimeException("Failed : HTTP error code : "+ response.getStatus()+ ":" + responseMap);
+ }
+
+ System.out.println(responseMap);
+ Boolean status = responseMap.get("status").equals("SUCCESS");
+ System.out.println("Server response .... " + status);
+ return status;
+ }
+
+ private void unlock(String lockId){
+ Client client = Client.create();
+ WebResource webResource = client.resource(musicHandle.getMusicNodeURL()+"/locks/release/"+lockId);
+
+ ClientResponse response = addMusicHeaders(webResource).delete(ClientResponse.class);
+
+
+ if (response.getStatus() < 200 || response.getStatus()>299) {
+ throw new RuntimeException("Failed : HTTP error code : "
+ + response.getStatus());
+ }
+ }
+
+ private void updateVoteCountAtomically(String candidateName,int count){
+ /*create lock for the candidate. The music API dictates that
+ * the lock name must be of the form keyspacename.tableName.primaryKeyName
+ * */
+ System.out.println("trying to acquire lock!");
+
+ String lockName = keyspaceName+".votecount."+candidateName;
+ lockNames.add(lockName);
+ String lockId = createLock(lockName);
+ while(acquireLock(lockId) != true);
+
+ System.out.println("acquired lock!");
+ //update candidate entry if you have the lock
+ Map<String,Object> values = new HashMap<String,Object>();
+ values.put("count",count);
+
+ Map<String,String> consistencyInfo= new HashMap<String, String>();
+ consistencyInfo.put("type", "critical");
+ consistencyInfo.put("lockId", lockId);
+
+ JsonInsert jIns = new JsonInsert();
+ jIns.setValues(values);
+ jIns.setConsistencyInfo(consistencyInfo);
+ ClientConfig clientConfig = new DefaultClientConfig();
+
+ clientConfig.getFeatures().put(
+ JSONConfiguration.FEATURE_POJO_MAPPING, Boolean.TRUE);
+
+ Client client = Client.create(clientConfig);
+ String url = musicHandle.getMusicNodeURL()+"/keyspaces/"+keyspaceName+"/tables/votecount/rows?name="+candidateName;
+ System.out.println(url);
+ WebResource webResource = client
+ .resource(url);
+
+ ClientResponse response = addMusicHeaders(webResource).accept("application/json")
+ .type("application/json").put(ClientResponse.class, jIns);
+
+ Map<String,String> map = response.getEntity(Map.class);
+
+ if (response.getStatus() < 200 || response.getStatus() > 299)
+ throw new RuntimeException("Failed : HTTP error code : "+ response.getStatus()+":"+map);
+
+ //release lock now that the operation is done
+ unlock(lockId);
+
+ }
+
+ private void deleteCandidateEntryEventually(String candidateName){
+ Map<String,String> consistencyInfo= new HashMap<String, String>();
+ consistencyInfo.put("type", "eventual");
+
+ JsonDelete jDel = new JsonDelete();
+ jDel.setConsistencyInfo(consistencyInfo);
+ ClientConfig clientConfig = new DefaultClientConfig();
+
+ clientConfig.getFeatures().put(
+ JSONConfiguration.FEATURE_POJO_MAPPING, Boolean.TRUE);
+
+ Client client = Client.create(clientConfig);
+ String url = musicHandle.getMusicNodeURL()+"/keyspaces/"+keyspaceName+"/tables/votecount/rows?name="+candidateName;
+ System.out.println(url);
+ WebResource webResource = client
+ .resource(url);
+
+ ClientResponse response = addMusicHeaders(webResource).accept("application/json")
+ .type("application/json").delete(ClientResponse.class, jDel);
+
+ if (response.getStatus() < 200 || response.getStatus() > 299)
+ throw new RuntimeException("Failed : HTTP error code : "+ response.getStatus()+"url:"+url);
+
+ }
+
+ public Map<String,Object> readVoteCountForCandidate(String candidateName){
+ ClientConfig clientConfig = new DefaultClientConfig();
+
+ clientConfig.getFeatures().put(
+ JSONConfiguration.FEATURE_POJO_MAPPING, Boolean.TRUE);
+
+ Client client = Client.create(clientConfig);
+ String url = musicHandle.getMusicNodeURL()+"/keyspaces/"+keyspaceName+"/tables/votecount/rows?name="+candidateName;
+ WebResource webResource = client
+ .resource(url);
+
+ ClientResponse response = addMusicHeaders(webResource).accept("application/json").get(ClientResponse.class);
+
+ if (response.getStatus() < 200 || response.getStatus() > 299)
+ throw new RuntimeException("Failed : HTTP error code : "+ response.getStatus());
+
+ Map<String,Object> output = response.getEntity(Map.class);
+ return output;
+ }
+
+ public Map<String,Object> readAllVotes(){
+ ClientConfig clientConfig = new DefaultClientConfig();
+
+ clientConfig.getFeatures().put(
+ JSONConfiguration.FEATURE_POJO_MAPPING, Boolean.TRUE);
+
+ Client client = Client.create(clientConfig);
+ String url = musicHandle.getMusicNodeURL()+"/keyspaces/"+keyspaceName+"/tables/votecount/rows";
+ WebResource webResource = client
+ .resource(url);
+
+ ClientResponse response = addMusicHeaders(webResource).accept("application/json").get(ClientResponse.class);
+
+ if (response.getStatus() < 200 || response.getStatus() > 299)
+ throw new RuntimeException("Failed : HTTP error code : "+ response.getStatus());
+
+ Map<String,Object> output = response.getEntity(Map.class);
+ return output;
+ }
+
+
+ /*
+ * Unable to use this because of the error:
+ * Exception in thread "main" com.sun.jersey.api.client.ClientHandlerException: java.net.ProtocolException:
+ * HTTP method DELETE doesn't support output. Seems to be a error in the rest java combination according to the interwebs
+ */
+ private void dropKeySpace(){
+ Map<String,String> consistencyInfo= new HashMap<String, String>();
+ consistencyInfo.put("type", "eventual");
+
+ JsonKeySpace jsonKp = new JsonKeySpace();
+ jsonKp.setConsistencyInfo(consistencyInfo);
+
+ ClientConfig clientConfig = new DefaultClientConfig();
+
+ clientConfig.getFeatures().put(
+ JSONConfiguration.FEATURE_POJO_MAPPING, Boolean.TRUE);
+
+ Client client = Client.create(clientConfig);
+
+ WebResource webResource = client
+ .resource(musicHandle.getMusicNodeURL()+"/keyspaces/"+keyspaceName);
+
+ ClientResponse response = addMusicHeaders(webResource).type("application/json")
+ .delete(ClientResponse.class, jsonKp);
+
+ if (response.getStatus() < 200 || response.getStatus() > 299)
+ throw new RuntimeException("Failed : HTTP error code : "+ response.getStatus());
+ }
+
+ private void deleteLock(String lockName){
+ Client client = Client.create();
+ WebResource webResource = client.resource(musicHandle.getMusicNodeURL()+"/locks/delete/"+lockName);
+
+ ClientResponse response = addMusicHeaders(webResource).delete(ClientResponse.class);
+
+
+ if (response.getStatus() <200 || response.getStatus()>299) {
+ throw new RuntimeException("Failed : HTTP error code : "
+ + response.getStatus());
+ }
+ }
+
+ private void resetMusic(){
+ Client client = Client.create();
+ WebResource webResource = client.resource(musicHandle.getMusicNodeURL()+"/reset");
+
+ ClientResponse response = addMusicHeaders(webResource).delete(ClientResponse.class);
+
+
+ if (response.getStatus() != 204) {
+ throw new RuntimeException("Failed : HTTP error code : "
+ + response.getStatus());
+ }
+
+ }
+ public void deleteAllLocks(){
+ for (String lockName : lockNames) {
+ deleteLock(lockName);
+ }
+ }
+
+
+ public void bootStrap(){
+ checkMusicVersion();
+ createVotingKeyspace();
+
+
+ createVotingTable();
+
+
+ //the next few lines just create an entry in the voting table for all these candidates with vote count as 0
+ createEntryForCandidate("Popeye");
+
+ createEntryForCandidate("Judy");
+
+ createEntryForCandidate("Flash");
+
+ createEntryForCandidate("Mickey");
+
+ }
+
+ public void overAllTests(){
+ //update the count atomically
+ updateVoteCountAtomically("Popeye",5);
+
+ updateVoteCountAtomically("Judy",7);
+
+ updateVoteCountAtomically("Mickey",8);
+
+ updateVoteCountAtomically("Flash",2);
+
+
+ //read votecount
+ System.out.println(readAllVotes());
+
+ System.out.println(readVoteCountForCandidate("Popeye"));
+
+ System.out.println(readVoteCountForCandidate("Flash"));
+
+ deleteCandidateEntryEventually("Mickey");
+
+ System.out.println(readAllVotes());
+
+// dropKeySpace();
+
+ deleteAllLocks();
+ }
+
+ public void flipTest(){
+ checkMusicVersion();
+ }
+
+ public static String executeBashScript(String pathToScript, String arg1, String arg2){
+ try {
+ ProcessBuilder pb = new ProcessBuilder(pathToScript,arg1, arg2);
+ final Process process = pb.start();
+ InputStream is = process.getInputStream();
+ InputStreamReader isr = new InputStreamReader(is);
+ BufferedReader br = new BufferedReader(isr);
+ return br.readLine();
+ } catch (IOException e) {
+ e.printStackTrace();
+ }
+ return null;
+ }
+
+ public static void main(String[] args) {
+ long start = System.currentTimeMillis();
+
+ if (args.length==0) {
+ args = new String[]{"localhost"};
+ }
+ for(int i =0; i < 2;++i){
+ VotingApp vHandle = new VotingApp(args);
+ vHandle.overAllTests();
+
+ System.out.println("=====================================");
+ System.out.println("Test no."+i+" completed:");
+ }
+ long diff = System.currentTimeMillis() - start;
+ System.out.println(diff);
+ }
+
+
+} \ No newline at end of file