pt 1 in reviving the android build (copied from pm 28a1, wish me luck)

mobile/android/thirdparty/ch/boye/httpclientandroidlib/pool/PoolStats.java

@@ -0,0 +1,114 @@
+/*
+ * ====================================================================
+ * Licensed to the Apache Software Foundation (ASF) under one
+ * or more contributor license agreements.  See the NOTICE file
+ * distributed with this work for additional information
+ * regarding copyright ownership.  The ASF licenses this file
+ * to you 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.
+ * ====================================================================
+ *
+ * This software consists of voluntary contributions made by many
+ * individuals on behalf of the Apache Software Foundation.  For more
+ * information on the Apache Software Foundation, please see
+ * <http://www.apache.org/>.
+ *
+ */
+package ch.boye.httpclientandroidlib.pool;
+
+import ch.boye.httpclientandroidlib.annotation.Immutable;
+
+/**
+ * Pool statistics.
+ * <p>
+ * The total number of connections in the pool is equal to {@code available} plus {@code leased}.
+ * </p>
+ *
+ * @since 4.2
+ */
+@Immutable
+public class PoolStats {
+
+    private final int leased;
+    private final int pending;
+    private final int available;
+    private final int max;
+
+    public PoolStats(final int leased, final int pending, final int free, final int max) {
+        super();
+        this.leased = leased;
+        this.pending = pending;
+        this.available = free;
+        this.max = max;
+    }
+
+    /**
+     * Gets the number of persistent connections tracked by the connection manager currently being used to execute
+     * requests.
+     * <p>
+     * The total number of connections in the pool is equal to {@code available} plus {@code leased}.
+     * </p>
+     *
+     * @return the number of persistent connections.
+     */
+    public int getLeased() {
+        return this.leased;
+    }
+
+    /**
+     * Gets the number of connection requests being blocked awaiting a free connection. This can happen only if there
+     * are more worker threads contending for fewer connections.
+     *
+     * @return the number of connection requests being blocked awaiting a free connection.
+     */
+    public int getPending() {
+        return this.pending;
+    }
+
+    /**
+     * Gets the number idle persistent connections.
+     * <p>
+     * The total number of connections in the pool is equal to {@code available} plus {@code leased}.
+     * </p>
+     *
+     * @return number idle persistent connections.
+     */
+    public int getAvailable() {
+        return this.available;
+    }
+
+    /**
+     * Gets the maximum number of allowed persistent connections.
+     *
+     * @return the maximum number of allowed persistent connections.
+     */
+    public int getMax() {
+        return this.max;
+    }
+
+    @Override
+    public String toString() {
+        final StringBuilder buffer = new StringBuilder();
+        buffer.append("[leased: ");
+        buffer.append(this.leased);
+        buffer.append("; pending: ");
+        buffer.append(this.pending);
+        buffer.append("; available: ");
+        buffer.append(this.available);
+        buffer.append("; max: ");
+        buffer.append(this.max);
+        buffer.append("]");
+        return buffer.toString();
+    }
+
+}