--- /dev/null
+/**
+ * ============LICENSE_START====================================================
+ * org.onap.aaf
+ * ===========================================================================
+ * Copyright (c) 2018 AT&T Intellectual Property. All rights reserved.
+ * ===========================================================================
+ * 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.
+ * ============LICENSE_END====================================================
+ *
+ */
+
+package org.onap.aaf.auth.local;
+
+import java.io.File;
+import java.io.FileNotFoundException;
+import java.io.IOException;
+import java.io.RandomAccessFile;
+import java.util.Iterator;
+
+import org.onap.aaf.auth.env.AuthzTrans;
+import org.onap.aaf.auth.local.DataFile.Token;
+import org.onap.aaf.auth.local.DataFile.Token.Field;
+import org.onap.aaf.misc.env.Env;
+import org.onap.aaf.misc.env.TimeTaken;
+
+public abstract class AbsData implements Iterable<String> {
+ protected DataFile data;
+ protected TextIndex ti;
+ private File dataf,idxf,lockf;
+ private String name;
+ private char delim;
+ private int maxLineSize;
+ private int fieldOffset;
+ private int skipLines;
+
+ public AbsData(File dataf,char sepChar, int maxLineSize, int fieldOffset) {
+ File dir = dataf.getParentFile();
+ int dot = dataf.getName().lastIndexOf('.');
+ name = dataf.getName().substring(0,dot);
+
+ this.dataf=dataf;
+ this.delim = sepChar;
+ this.maxLineSize = maxLineSize;
+ this.fieldOffset = fieldOffset;
+ idxf = new File(dir,name.concat(".idx"));
+ lockf = new File(dir,name.concat(".lock"));
+
+
+ data = new DataFile(dataf,"r");
+ ti = new TextIndex(idxf);
+ skipLines=0;
+ }
+
+ public void skipLines(int lines) {
+ skipLines=lines;
+ }
+
+ public String name() {
+ return name;
+ }
+
+ public void open(AuthzTrans trans, long timeout) throws IOException {
+ TimeTaken tt = trans.start("Open Data File", Env.SUB);
+ boolean opened = false, first = true;
+ try {
+ if(!dataf.exists()) {
+ throw new FileNotFoundException("Data File Missing:" + dataf.getCanonicalPath());
+ }
+ long begin = System.currentTimeMillis();
+ long end = begin+timeout;
+ boolean exists;
+ while((exists=lockf.exists()) && begin<end) {
+ if(first) {
+ trans.warn().log("Waiting for",lockf.getCanonicalPath(),"to close");
+ first = false;
+ }
+ try {
+ Thread.sleep(200);
+ } catch (InterruptedException e) {
+ break;
+ }
+ begin = System.currentTimeMillis();
+ }
+ if(exists) {
+ throw new IOException(lockf.getCanonicalPath() + "exists. May not open Datafile");
+ }
+ data.open();
+ try {
+ ensureIdxGood(trans);
+ } catch (IOException e) {
+ data.close();
+ throw e;
+ }
+ ti.open();
+ opened = true;
+
+ } finally {
+ tt.done();
+ }
+ if(!opened) {
+ throw new IOException("DataFile pair for " + name + " was not able to be opened in " + timeout + "ms");
+ }
+ }
+
+ private synchronized void ensureIdxGood(AuthzTrans trans) throws IOException {
+ if(!idxf.exists() || idxf.length()==0 || dataf.lastModified()>idxf.lastModified()) {
+ trans.warn().log(idxf.getAbsolutePath(),"is missing, empty or out of date, creating");
+ RandomAccessFile raf = new RandomAccessFile(lockf, "rw");
+ try {
+ ti.create(trans, data, maxLineSize, delim, fieldOffset, skipLines);
+ if(!idxf.exists() || (idxf.length()==0 && dataf.length()!=0)) {
+ throw new IOException("Data Index File did not create correctly");
+ }
+ } finally {
+ raf.close();
+ lockf.delete();
+ }
+ }
+ }
+
+ public void close(AuthzTrans trans) throws IOException {
+ ti.close();
+ data.close();
+ }
+
+ public class Reuse {
+ public Token tokenData;
+ private Field fieldData;
+
+ private Reuse(int size,char delim) {
+ tokenData = data.new Token(size);
+ fieldData = tokenData.new Field(delim);
+ }
+
+ public void reset() {
+ getFieldData().reset();
+ }
+
+ public void pos(int rec) {
+ getFieldData().reset();
+ tokenData.pos(rec);
+ }
+
+ public String next() {
+ return getFieldData().next();
+ }
+
+ public String at(int field) {
+ return getFieldData().at(field);
+ }
+
+ public String atToEnd(int field) {
+ return getFieldData().atToEnd(field);
+ }
+
+ public Field getFieldData() {
+ return fieldData;
+ }
+ }
+
+ public Reuse reuse() {
+ return new Reuse(maxLineSize,delim);
+ }
+
+ public Iter iterator() {
+ return new Iter();
+ }
+
+ public class Iter implements Iterator<String> {
+ private Reuse reuse;
+ private org.onap.aaf.auth.local.TextIndex.Iter tii;
+
+ public Iter() {
+ reuse = reuse();
+ tii = ti.new Iter();
+ }
+
+ @Override
+ public boolean hasNext() {
+ return tii.hasNext();
+ }
+
+ @Override
+ public String next() {
+ reuse.reset();
+ int rec = tii.next();
+ reuse.pos(rec);
+ return reuse.at(0);
+ }
+
+ @Override
+ public void remove() {
+ // read only
+ }
+ }
+}
Code Review / aaf / authz.git / blobdiff