Remove Guava from JDBC module (#401)

* Remove Guava from JDBC module

Author: bsideup

CHANGELOG.md

@@ -5,6 +5,7 @@ All notable changes to this project will be documented in this file.
 ### Fixed
 
 ### Changed
+- Removed Guava usage from `jdbc` module (#401)
 
 ## [1.4.1] - 2017-07-10
 ### Fixed

modules/jdbc/pom.xml

@@ -18,57 +18,6 @@
             <artifactId>testcontainers</artifactId>
             <version>${project.version}</version>
         </dependency>
-        <dependency>
-            <groupId>com.google.guava</groupId>
-            <artifactId>guava</artifactId>
-            <version>18.0</version>
-        </dependency>
     </dependencies>
 
-    <build>
-        <plugins>
-            <plugin>
-                <artifactId>maven-shade-plugin</artifactId>
-                <version>3.0.0</version>
-                <executions>
-                    <execution>
-                        <phase>package</phase>
-                        <goals>
-                            <goal>shade</goal>
-                        </goals>
-                    </execution>
-                </executions>
-                <configuration>
-                    <relocations>
-                        <relocation>
-                            <pattern>com.google</pattern>
-                            <shadedPattern>org.testcontainers.shaded.com.google</shadedPattern>
-                        </relocation>
-                    </relocations>
-                    <artifactSet>
-                        <includes>
-                            <include>com.google.guava:*</include>
-                        </includes>
-                    </artifactSet>
-                    <promoteTransitiveDependencies>false</promoteTransitiveDependencies>
-                    <shadedArtifactAttached>false</shadedArtifactAttached>
-                    <filters>
-                        <filter>
-                            <artifact>*:*</artifact>
-                            <excludes>
-                                <exclude>META-INF/NOTICE</exclude>
-                                <exclude>META-INF/LICENSE</exclude>
-                                <exclude>META-INF/DEPENDENCIES</exclude>
-                                <exclude>META-INF/maven/</exclude>
-                                <exclude>META-INF/*.SF</exclude>
-                                <exclude>META-INF/*.DSA</exclude>
-                                <exclude>META-INF/*.RSA</exclude>
-                            </excludes>
-                        </filter>
-                    </filters>
-                </configuration>
-            </plugin>
-        </plugins>
-    </build>
-
 </project>

modules/jdbc/src/main/java/org/testcontainers/jdbc/ContainerDatabaseDriver.java

@@ -1,8 +1,6 @@
 package org.testcontainers.jdbc;
 
-import com.google.common.annotations.VisibleForTesting;
-import com.google.common.base.Charsets;
-import com.google.common.io.Resources;
+import org.apache.commons.io.IOUtils;
 import org.slf4j.LoggerFactory;
 import org.testcontainers.containers.JdbcDatabaseContainer;
 import org.testcontainers.containers.JdbcDatabaseContainerProvider;
@@ -13,6 +11,7 @@
 import java.lang.reflect.InvocationTargetException;
 import java.lang.reflect.Method;
 import java.net.URL;
+import java.nio.charset.StandardCharsets;
 import java.sql.*;
 import java.util.*;
 import java.util.logging.Logger;
@@ -223,10 +222,16 @@ private void runInitScriptIfRequired(String url, Connection connection) throws S
         if (matcher.matches()) {
             String initScriptPath = matcher.group(2);
             try {
-                URL resource = Resources.getResource(initScriptPath);
-                String sql = Resources.toString(resource, Charsets.UTF_8);
+                URL resource = Thread.currentThread().getContextClassLoader().getResource(initScriptPath);
+
+                if (resource == null) {
+                    LOGGER.warn("Could not load classpath init script: {}", initScriptPath);
+                    throw new SQLException("Could not load classpath init script: " + initScriptPath + ". Resource not found.");
+                }
+
+                String sql = IOUtils.toString(resource, StandardCharsets.UTF_8);
                 ScriptUtils.executeSqlScript(connection, initScriptPath, sql);
-            } catch (IOException | IllegalArgumentException e) {
+            } catch (IOException e) {
                 LOGGER.warn("Could not load classpath init script: {}", initScriptPath);
                 throw new SQLException("Could not load classpath init script: " + initScriptPath, e);
             } catch (ScriptException e) {
@@ -324,7 +329,6 @@ public static void killContainer(String jdbcUrl) {
      * @param jdbcUrl the JDBC URL of the container instance to get
      * @return an instance of database container or <code>null</code> if no container associated with JDBC URL
      */
-    @VisibleForTesting
     static JdbcDatabaseContainer getContainer(String jdbcUrl) {
         synchronized (jdbcUrlContainerCache) {
             return jdbcUrlContainerCache.get(jdbcUrl);

modules/jdbc/src/main/java/org/testcontainers/jdbc/ext/ScriptUtils.java

@@ -16,8 +16,7 @@
 
 package org.testcontainers.jdbc.ext;
 
-import com.google.common.base.Preconditions;
-import com.google.common.base.Strings;
+import org.apache.commons.lang.StringUtils;
 import org.slf4j.Logger;
 import org.slf4j.LoggerFactory;
 
@@ -110,11 +109,11 @@ private ScriptUtils() {
 	public static void splitSqlScript(String resource, String script, String separator, String commentPrefix,
                                       String blockCommentStartDelimiter, String blockCommentEndDelimiter, List<String> statements) {
 
-		Preconditions.checkArgument(!Strings.isNullOrEmpty(script), "script must not be null or empty");
-		Preconditions.checkArgument(separator != null, "separator must not be null");
-		Preconditions.checkArgument(!Strings.isNullOrEmpty(commentPrefix), "commentPrefix must not be null or empty");
-		Preconditions.checkArgument(!Strings.isNullOrEmpty(blockCommentStartDelimiter), "blockCommentStartDelimiter must not be null or empty");
-		Preconditions.checkArgument(!Strings.isNullOrEmpty(blockCommentEndDelimiter), "blockCommentEndDelimiter must not be null or empty");
+		checkArgument(StringUtils.isNotEmpty(script), "script must not be null or empty");
+		checkArgument(separator != null, "separator must not be null");
+		checkArgument(StringUtils.isNotEmpty(commentPrefix), "commentPrefix must not be null or empty");
+		checkArgument(StringUtils.isNotEmpty(blockCommentStartDelimiter), "blockCommentStartDelimiter must not be null or empty");
+		checkArgument(StringUtils.isNotEmpty(blockCommentEndDelimiter), "blockCommentEndDelimiter must not be null or empty");
 
 		StringBuilder sb = new StringBuilder();
 		boolean inLiteral = false;
@@ -183,11 +182,17 @@ else if (c == ' ' || c == '\n' || c == '\t') {
 			}
 			sb.append(c);
 		}
-		if (!Strings.isNullOrEmpty(sb.toString())) {
+		if (StringUtils.isNotEmpty(sb.toString())) {
 			statements.add(sb.toString());
 		}
 	}
 
+	private static void checkArgument(boolean expression, String errorMessage) {
+		if (!expression) {
+			throw new IllegalArgumentException(errorMessage);
+		}
+	}
+
     /**
 	 * Does the provided SQL script contain the specified delimiter?
 	 * @param script the SQL script