Add S3Handle

.travis.yml

@@ -10,7 +10,12 @@ cache:
 jdk:
   - oraclejdk11
   - oraclejdk8
-  - openjdk7
+
+before_script:
+  - cd location-server && ./start-location.sh && cd ..
+
+script:
+  - mvn test -B -Dtestng.runHttpRemoteTests=1 -Dtestng.runS3RemoteTests=1
 
 matrix:
   fast_finish: true

location-server/.gitignore

@@ -0,0 +1,5 @@
+bioformats.test.private
+bioformats.test.public
+mc
+minio
+.minio.sys

location-server/start-location.sh

@@ -0,0 +1,34 @@
+#!/bin/sh
+set -eux
+
+PORT=31836
+PLATFORM=`uname | tr '[:upper:]' '[:lower:]'`
+
+[ -f minio ] || \
+    curl -sfSo minio "https://dl.minio.io/server/minio/release/$PLATFORM-amd64/minio"
+[ -f mc ] || \
+    curl -sfSo mc "https://dl.minio.io/client/mc/release/$PLATFORM-amd64/mc"
+chmod +x minio mc
+./minio version
+./mc version
+
+export MINIO_ACCESS_KEY=accesskey MINIO_SECRET_KEY=secretkey
+./minio server --address localhost:$PORT . &
+sleep 2;
+
+./mc config host add ome-common-java-minio-test http://localhost:$PORT ${MINIO_ACCESS_KEY} ${MINIO_SECRET_KEY}
+
+set +x
+
+for SUFFIX in public private; do
+    ./mc ls ome-common-java-minio-test/bioformats.test.$SUFFIX || \
+        ./mc mb ome-common-java-minio-test/bioformats.test.$SUFFIX
+    ./mc ls ome-common-java-minio-test/bioformats.test.$SUFFIX/single-channel.ome.tiff || \
+        curl -sfS https://downloads.openmicroscopy.org/images/OME-TIFF/2016-06/bioformats-artificial/single-channel.ome.tiff | \
+            ./mc pipe ome-common-java-minio-test/bioformats.test.$SUFFIX/single-channel.ome.tiff
+    # 2MB file for testing seek
+    for n in `seq 65536`; do printf '.% 30d\n' $n; done | \
+        ./mc pipe ome-common-java-minio-test/bioformats.test.$SUFFIX/2MBfile.txt
+done
+
+./mc policy public ome-common-java-minio-test/bioformats.test.public

pom.xml

@@ -101,6 +101,11 @@
   </distributionManagement>
 
   <dependencies>
+    <dependency>
+     <groupId>io.minio</groupId>
+     <artifactId>minio</artifactId>
+     <version>5.0.2</version>
+    </dependency>
     <dependency>
      <groupId>com.esotericsoftware.kryo</groupId>
      <artifactId>kryo</artifactId>
@@ -233,6 +238,10 @@
           <suiteXmlFiles>
             <suiteXmlFile>src/test/java/loci/common/utests/testng-template.xml</suiteXmlFile>
           </suiteXmlFiles>
+          <systemPropertyVariables>
+            <testng.runHttpRemoteTests>0</testng.runHttpRemoteTests>
+            <testng.runS3RemoteTests>0</testng.runS3RemoteTests>
+          </systemPropertyVariables>
         </configuration>
       </plugin>
 

src/main/java/loci/common/AbstractNIOHandle.java

@@ -56,6 +56,12 @@ public abstract class AbstractNIOHandle implements IRandomAccess {
 
   // -- AbstractNIOHandle methods --
 
+  /* @see IRandomAccess#exists() */
+  @Override
+  public boolean exists() throws IOException {
+    return length() >= 0;
+  }
+
   /**
    * Ensures that the file mode is either "r" or "rw".
    * @param mode Mode to validate.

src/main/java/loci/common/FileHandle.java

@@ -101,6 +101,12 @@ public long getFilePointer() throws IOException {
     return raf.getFilePointer();
   }
 
+  /* @see IRandomAccess#exists() */
+  @Override
+  public boolean exists() throws IOException {
+    return length() >= 0;
+  }
+
   /* @see IRandomAccess.length() */
   @Override
   public long length() throws IOException {

src/main/java/loci/common/IRandomAccess.java

@@ -61,6 +61,14 @@ public interface IRandomAccess extends DataInput, DataOutput {
    */
   long getFilePointer() throws IOException;
 
+  /**
+   * Returns whether this refers to a valid object
+   *
+   * @return true if this refers to a valid object
+   * @throws IOException if unable to determine whether the object is valid
+   */
+  boolean exists() throws IOException;
+
   /**
    * Returns the length of this stream.
    *