Move files from main app to api project

.gitignore

@@ -21,3 +21,7 @@
 
 # virtual machine crash logs, see http://www.java.com/en/download/help/error_hotspot.xml
 hs_err_pid*
+
+.idea/
+
+target/

pom.xml

@@ -0,0 +1,74 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<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>blockchains.iaas.uni.stuttgart.de</groupId>
+    <artifactId>blockchain-access-layer-api</artifactId>
+    <version>1.0.1-SNAPSHOT</version>
+
+    <properties>
+        <maven.compiler.source>8</maven.compiler.source>
+        <maven.compiler.target>8</maven.compiler.target>
+        <jsonrpc.version>0.10</jsonrpc.version>
+        <org.slf4j>1.7.25</org.slf4j>
+        <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
+    </properties>
+
+    <dependencies>
+        <dependency>
+            <groupId>org.pf4j</groupId>
+            <artifactId>pf4j</artifactId>
+            <version>3.6.0</version>
+        </dependency>
+        <dependency>
+            <groupId>com.github.arteam</groupId>
+            <artifactId>simple-json-rpc-server</artifactId>
+            <version>${jsonrpc.version}</version>
+            <exclusions>
+                <exclusion>
+                    <groupId>org.slf4j</groupId>
+                    <artifactId>slf4j-api</artifactId>
+                </exclusion>
+                <exclusion>
+                    <groupId>com.google.guava</groupId>
+                    <artifactId>guava</artifactId>
+                </exclusion>
+            </exclusions>
+        </dependency>
+        <dependency>
+            <groupId>com.github.arteam</groupId>
+            <artifactId>simple-json-rpc-client</artifactId>
+            <version>${jsonrpc.version}</version>
+            <exclusions>
+                <exclusion>
+                    <groupId>org.slf4j</groupId>
+                    <artifactId>slf4j-api</artifactId>
+                </exclusion>
+            </exclusions>
+        </dependency>
+        <dependency>
+            <groupId>org.projectlombok</groupId>
+            <artifactId>lombok</artifactId>
+            <version>1.18.8</version>
+            <scope>provided</scope>
+        </dependency>
+        <dependency>
+            <groupId>com.google.guava</groupId>
+            <artifactId>guava</artifactId>
+            <version>26.0-android</version>
+        </dependency>
+        <!-- https://mvnrepository.com/artifact/javax.json/javax.json-api -->
+        <dependency>
+            <groupId>javax.json</groupId>
+            <artifactId>javax.json-api</artifactId>
+            <version>1.1.4</version>
+        </dependency>
+        <dependency>
+            <groupId>io.reactivex.rxjava2</groupId>
+            <artifactId>rxjava</artifactId>
+            <version>2.2.21</version>
+        </dependency>
+    </dependencies>
+</project>

src/main/java/blockchains/iaas/uni/stuttgart/de/api/IAdapterExtenstion.java

@@ -0,0 +1,23 @@
+/*******************************************************************************
+ * Copyright (c) 2022 Institute for the Architecture of Application System - University of Stuttgart
+ * Author: Akshay Patel
+ *
+ * This program and the accompanying materials are made available under the
+ * terms the Apache Software License 2.0
+ * which is available at https://www.apache.org/licenses/LICENSE-2.0.
+ *
+ * SPDX-License-Identifier: Apache-2.0
+ *******************************************************************************/
+
+package blockchains.iaas.uni.stuttgart.de.api;
+
+import blockchains.iaas.uni.stuttgart.de.api.interfaces.BlockchainAdapter;
+import org.pf4j.ExtensionPoint;
+
+import java.util.Map;
+
+public interface IAdapterExtenstion extends ExtensionPoint {
+    BlockchainAdapter getAdapter(Map<String, String> parameters);
+
+    String getBlockChainId();
+}

src/main/java/blockchains/iaas/uni/stuttgart/de/api/connectionprofiles/AbstractConnectionProfile.java

@@ -0,0 +1,59 @@
+/********************************************************************************
+ * Copyright (c) 2019 Institute for the Architecture of Application System -
+ * University of Stuttgart
+ * Author: Ghareeb Falazi
+ *
+ * This program and the accompanying materials are made available under the
+ * terms the Apache Software License 2.0
+ * which is available at https://www.apache.org/licenses/LICENSE-2.0.
+ *
+ * SPDX-License-Identifier: Apache-2.0
+ ********************************************************************************/
+
+package blockchains.iaas.uni.stuttgart.de.api.connectionprofiles;
+
+import com.fasterxml.jackson.annotation.JsonIgnoreProperties;
+import com.fasterxml.jackson.annotation.JsonTypeInfo;
+
+import java.util.Properties;
+
+@JsonIgnoreProperties(ignoreUnknown = true)
+@JsonTypeInfo(use = JsonTypeInfo.Id.NAME)
+public abstract class AbstractConnectionProfile {
+    private static final String PREFIX = "common.";
+    private static final String ADVERSARY_VOTING_RATIO = PREFIX + "adversaryVotingRatio";
+    private double adversaryVotingRatio;
+
+    public double getAdversaryVotingRatio() {
+        return adversaryVotingRatio;
+    }
+
+    public void setAdversaryVotingRatio(double adversaryVotingRatio) {
+        if (adversaryVotingRatio < 0 || adversaryVotingRatio > 1.0) {
+            throw new IllegalArgumentException("Voting power of adversary should be between 0.0 and 1.0, but (" +
+                    adversaryVotingRatio + ") is passed!");
+        }
+
+        this.adversaryVotingRatio = adversaryVotingRatio;
+    }
+
+    public Properties getAsProperties() {
+        Properties result = new Properties();
+        result.put(ADVERSARY_VOTING_RATIO, String.valueOf(adversaryVotingRatio));
+
+        return  result;
+    }
+
+    @Override
+    public boolean equals(Object o) {
+        if (this == o) return true;
+        if (o == null || getClass() != o.getClass()) return false;
+        AbstractConnectionProfile that = (AbstractConnectionProfile) o;
+        return this.getAsProperties().equals(that.getAsProperties());
+    }
+
+    @Override
+    public int hashCode() {
+        return this.getAsProperties().hashCode();
+    }
+}

src/main/java/blockchains/iaas/uni/stuttgart/de/api/exceptions/BalException.java

@@ -0,0 +1,31 @@
+/*******************************************************************************
+ * Copyright (c) 2019 Institute for the Architecture of Application System - University of Stuttgart
+ * Author: Ghareeb Falazi
+ *
+ * This program and the accompanying materials are made available under the
+ * terms the Apache Software License 2.0
+ * which is available at https://www.apache.org/licenses/LICENSE-2.0.
+ *
+ * SPDX-License-Identifier: Apache-2.0
+ *******************************************************************************/
+package blockchains.iaas.uni.stuttgart.de.api.exceptions;
+
+public abstract class BalException extends RuntimeException {
+
+    public BalException() {
+    }
+
+    public BalException(String message) {
+        super(message);
+    }
+
+    public BalException(String message, Throwable cause) {
+        super(message, cause);
+    }
+
+    public BalException(Throwable cause) {
+        super(cause);
+    }
+
+    public abstract int getCode();
+}

src/main/java/blockchains/iaas/uni/stuttgart/de/api/exceptions/BlockchainIdNotFoundException.java

@@ -0,0 +1,31 @@
+/********************************************************************************
+ * Copyright (c) 2018-2019 Institute for the Architecture of Application System -
+ * University of Stuttgart
+ * Author: Ghareeb Falazi
+ *
+ * This program and the accompanying materials are made available under the
+ * terms the Apache Software License 2.0
+ * which is available at https://www.apache.org/licenses/LICENSE-2.0.
+ *
+ * SPDX-License-Identifier: Apache-2.0
+ ********************************************************************************/
+package blockchains.iaas.uni.stuttgart.de.api.exceptions;
+
+import com.github.arteam.simplejsonrpc.core.annotation.JsonRpcError;
+
+@JsonRpcError(code = ExceptionCode.NotFound, message = "The specified blockchain-id cannot be found")
+public class BlockchainIdNotFoundException extends BalException {
+
+    public BlockchainIdNotFoundException() {
+        super();
+    }
+
+    public BlockchainIdNotFoundException(String message) {
+        super(message);
+    }
+
+    @Override
+    public int getCode() {
+        return ExceptionCode.NotFound;
+    }
+}

src/main/java/blockchains/iaas/uni/stuttgart/de/api/exceptions/BlockchainNodeUnreachableException.java

@@ -0,0 +1,30 @@
+/********************************************************************************
+ * Copyright (c) 2018-2019 Institute for the Architecture of Application System -
+ * University of Stuttgart
+ * Author: Ghareeb Falazi
+ *
+ * This program and the accompanying materials are made available under the
+ * terms the Apache Software License 2.0
+ * which is available at https://www.apache.org/licenses/LICENSE-2.0.
+ *
+ * SPDX-License-Identifier: Apache-2.0
+ ********************************************************************************/
+package blockchains.iaas.uni.stuttgart.de.api.exceptions;
+
+import com.github.arteam.simplejsonrpc.core.annotation.JsonRpcError;
+
+@JsonRpcError(code = ExceptionCode.ConnectionException, message = "The blockchain node cannot be reached.")
+public class BlockchainNodeUnreachableException extends BalException {
+
+    public BlockchainNodeUnreachableException() {
+    }
+
+    public BlockchainNodeUnreachableException(String message) {
+        super(message);
+    }
+
+    @Override
+    public int getCode() {
+        return ExceptionCode.ConnectionException;
+    }
+}

src/main/java/blockchains/iaas/uni/stuttgart/de/api/exceptions/ExceptionCode.java

@@ -0,0 +1,76 @@
+/*******************************************************************************
+ * Copyright (c) 2019 Institute for the Architecture of Application System - University of Stuttgart
+ * Author: Ghareeb Falazi
+ *
+ * This program and the accompanying materials are made available under the
+ * terms the Apache Software License 2.0
+ * which is available at https://www.apache.org/licenses/LICENSE-2.0.
+ *
+ * SPDX-License-Identifier: Apache-2.0
+ *******************************************************************************/
+
+package blockchains.iaas.uni.stuttgart.de.api.exceptions;
+
+public class ExceptionCode {
+    public static final int UnknownError = 0;
+
+    /**
+     * The blockchain instance, smart contract, event or function are not found
+     */
+    public static final int NotFound = -32000;
+    /**
+     * Input parameter types, names, or order mismatch the designated function or event.
+     * This also indicates inability to map a parameter's abstract type to a native type.
+     */
+    public static final int InvalidParameters = -32001;
+    /**
+     * Client certificate is missing
+     */
+    public static final int MissingCertificate = -32002;
+    /**
+     * The client application is not authorized to perform the requested task.
+     * Gateway-side authorization.
+     */
+    public static final int NotAuthorized = -32003;
+    /**
+     * The specified blockchain instance does not support the requested operation.
+     */
+    public static final int NotSupported = -32004;
+    /**
+     * Connection to the underlying blockchain node is not possible.
+     */
+    public static final int ConnectionException = -32005;
+    /**
+     * The transaction associated with an function invocation is invalidated after it was mined.
+     */
+    public static final int TransactionInvalidatedException = -32006;
+
+    /**
+     * A scip method parameter has an invalid value
+     */
+    public static final int InvalidScipParam = -32007;
+
+    /**
+     * A general error occurred when trying to invoke a smart contract function
+     * This error is used when the specific cause of the error cannot be deteremined.
+     */
+    public static final int InvocationError = -32100;
+    /**
+     * The smart contract function threw an exception
+     */
+    public static final int ExecutionError = -32101;
+    /**
+     * Not enough funds to invoke the state-changing smart contract funciton.
+     */
+    public static final int InsufficientFunds = -32102;
+    /**
+     * The BAL instance is not authorized to performed the requested operation on the underlying blockchain.
+     */
+    public static final int BalNotAuthorized = -32103;
+
+    /**
+     * Timeout is reached before fulfilling the desired degree of confidence.
+     * This is an asynchronous error.
+     */
+    public static final int Timeout = -32201;
+}

src/main/java/blockchains/iaas/uni/stuttgart/de/api/exceptions/InvalidScipParameterException.java

@@ -0,0 +1,29 @@
+/*******************************************************************************
+ * Copyright (c) 2019 Institute for the Architecture of Application System - University of Stuttgart
+ * Author: Ghareeb Falazi
+ *
+ * This program and the accompanying materials are made available under the
+ * terms the Apache Software License 2.0
+ * which is available at https://www.apache.org/licenses/LICENSE-2.0.
+ *
+ * SPDX-License-Identifier: Apache-2.0
+ *******************************************************************************/
+
+package blockchains.iaas.uni.stuttgart.de.api.exceptions;
+
+import com.github.arteam.simplejsonrpc.core.annotation.JsonRpcError;
+
+@JsonRpcError(code = ExceptionCode.InvalidScipParam, message = "A scip method parameter has an invalid value.")
+public class InvalidScipParameterException extends BalException {
+    @Override
+    public int getCode() {
+        return ExceptionCode.InvalidScipParam;
+    }
+
+    public InvalidScipParameterException() {
+    }
+
+    public InvalidScipParameterException(String message) {
+        super(message);
+    }
+}