X-Git-Url: https://git.argeo.org/?a=blobdiff_plain;ds=sidebyside;f=org.argeo.util%2Fsrc%2Forg%2Fargeo%2Futil%2FThroughput.java;fp=org.argeo.util%2Fsrc%2Forg%2Fargeo%2Futil%2FThroughput.java;h=d081189e2c51e520fb9bedab0f274328477dd17e;hb=eebaa683a3c470ad22a5eaa5c32f816a2ea2cbbb;hp=0000000000000000000000000000000000000000;hpb=d08dc639576f693e0a88de2b6e012298baec2936;p=lgpl%2Fargeo-commons.git

diff --git a/org.argeo.util/src/org/argeo/util/Throughput.java b/org.argeo.util/src/org/argeo/util/Throughput.java
new file mode 100644
index 000000000..d081189e2
--- /dev/null
+++ b/org.argeo.util/src/org/argeo/util/Throughput.java
@@ -0,0 +1,100 @@
+/*
+ * Copyright (C) 2007-2012 Argeo GmbH
+ *
+ * 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.
+ */
+package org.argeo.util;
+
+import java.text.NumberFormat;
+import java.text.ParseException;
+import java.util.Locale;
+
+import org.argeo.ArgeoException;
+
+public class Throughput {
+	private final static NumberFormat usNumberFormat = NumberFormat
+			.getInstance(Locale.US);
+
+	public enum Unit {
+		s, m, h, d
+	}
+
+	private final Double value;
+	private final Unit unit;
+
+	public Throughput(Double value, Unit unit) {
+		this.value = value;
+		this.unit = unit;
+	}
+
+	public Throughput(Long periodMs, Long count, Unit unit) {
+		if (unit.equals(Unit.s))
+			value = ((double) count * 1000d) / periodMs;
+		else if (unit.equals(Unit.m))
+			value = ((double) count * 60d * 1000d) / periodMs;
+		else if (unit.equals(Unit.h))
+			value = ((double) count * 60d * 60d * 1000d) / periodMs;
+		else if (unit.equals(Unit.d))
+			value = ((double) count * 24d * 60d * 60d * 1000d) / periodMs;
+		else
+			throw new ArgeoException("Unsupported unit " + unit);
+		this.unit = unit;
+	}
+
+	public Throughput(Double value, String unitStr) {
+		this(value, Unit.valueOf(unitStr));
+	}
+
+	public Throughput(String def) {
+		int index = def.indexOf('/');
+		if (def.length() < 3 || index <= 0 || index != def.length() - 2)
+			throw new ArgeoException(def + " no a proper throughput definition"
+					+ " (should be <value>/<unit>, e.g. 3.54/s or 1500/h");
+		String valueStr = def.substring(0, index);
+		String unitStr = def.substring(index + 1);
+		try {
+			this.value = usNumberFormat.parse(valueStr).doubleValue();
+		} catch (ParseException e) {
+			throw new ArgeoException("Cannot parse " + valueStr
+					+ " as a number.", e);
+		}
+		this.unit = Unit.valueOf(unitStr);
+	}
+
+	public Long asMsPeriod() {
+		if (unit.equals(Unit.s))
+			return Math.round(1000d / value);
+		else if (unit.equals(Unit.m))
+			return Math.round((60d * 1000d) / value);
+		else if (unit.equals(Unit.h))
+			return Math.round((60d * 60d * 1000d) / value);
+		else if (unit.equals(Unit.d))
+			return Math.round((24d * 60d * 60d * 1000d) / value);
+		else
+			throw new ArgeoException("Unsupported unit " + unit);
+	}
+
+	@Override
+	public String toString() {
+		return usNumberFormat.format(value) + '/' + unit;
+	}
+
+	public Double getValue() {
+		return value;
+	}
+
+	public Unit getUnit() {
+		return unit;
+	}
+
+}