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ARTEMIS-4743 Split lines on ./artemis queue stat for large names
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78 changes: 78 additions & 0 deletions
78
artemis-commons/src/main/java/org/apache/activemq/artemis/utils/TableOut.java
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,78 @@ | ||
| /* | ||
| * 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. | ||
| */ | ||
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| package org.apache.activemq.artemis.utils; | ||
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| import java.io.PrintStream; | ||
| import java.util.ArrayList; | ||
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| public class TableOut { | ||
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| String separator; | ||
| int[] columnSizes; | ||
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| public TableOut(String separator, int... columnSizes) { | ||
| this.separator = separator; | ||
| this.columnSizes = columnSizes; | ||
| } | ||
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| public void print(PrintStream stream, String... columns) { | ||
| ArrayList<String>[] splitColumns = new ArrayList[columns.length]; | ||
| for (int i = 0; i < columns.length; i++) { | ||
| splitColumns[i] = splitLine(columns[i], columnSizes[i]); | ||
| } | ||
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| boolean hasMoreLines; | ||
| int lineNumber = 0; | ||
| do { | ||
| hasMoreLines = false; | ||
| stream.print(separator); | ||
| for (int column = 0; column < columns.length; column++) { | ||
| StringBuilder cell = new StringBuilder(); | ||
| if (lineNumber < splitColumns[column].size()) { | ||
| cell.append(splitColumns[column].get(lineNumber)); | ||
| } | ||
| if (lineNumber + 1 < splitColumns[column].size()) { | ||
| hasMoreLines = true; | ||
| } | ||
| while (cell.length() < columnSizes[column]) { | ||
| cell.append(" "); | ||
| } | ||
| stream.print(cell); | ||
| stream.print(separator); | ||
| } | ||
| stream.println(); | ||
| lineNumber++; | ||
| } while (hasMoreLines); | ||
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| } | ||
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| public static ArrayList<String> splitLine(final String column, int size) { | ||
| ArrayList<String> cells = new ArrayList<>(); | ||
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| for (int position = 0; position < column.length();) { | ||
| int maxPosition = Math.min(size, column.length() - position); | ||
| cells.add(column.substring(position, position + maxPosition)); | ||
| position += maxPosition; | ||
| } | ||
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| return cells; | ||
| } | ||
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| } |
45 changes: 45 additions & 0 deletions
45
artemis-commons/src/test/java/org/apache/activemq/artemis/utils/TableOutTest.java
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,45 @@ | ||
| /* | ||
| * 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. | ||
| */ | ||
|
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| package org.apache.activemq.artemis.utils; | ||
|
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| import java.util.ArrayList; | ||
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| import org.junit.Assert; | ||
| import org.junit.Test; | ||
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| public class TableOutTest { | ||
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| @Test | ||
| public void testSplitString() { | ||
| String bigCell = "1234554321321"; | ||
| ArrayList<String> lines = TableOut.splitLine(bigCell, 5); | ||
| Assert.assertEquals(3, lines.size()); | ||
| Assert.assertEquals("12345", lines.get(0)); | ||
| Assert.assertEquals("54321", lines.get(1)); | ||
| Assert.assertEquals("321", lines.get(2)); | ||
| } | ||
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| @Test | ||
| public void testOutLine() { | ||
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| // the output is visual, however this test is good to make sure the output at least works without any issues | ||
| TableOut tableOut = new TableOut("|", 10, 3, 3); | ||
| tableOut.print(System.out, "This is a big title", "1234567", "1234"); | ||
| } | ||
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| } |