| /* |
| * 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. |
| */ |
| package org.apache.camel.commands; |
| |
| import java.io.PrintStream; |
| import java.util.HashMap; |
| import java.util.Hashtable; |
| import java.util.List; |
| import java.util.Map; |
| |
| /** |
| * List the Camel validators available in the JVM. |
| */ |
| public class ValidatorListCommand extends AbstractCamelCommand { |
| |
| private static final String CONTEXT_NAME_COLUMN_LABEL = "Context"; |
| private static final String TYPE_COLUMN_LABEL = "Type"; |
| private static final String STATE_COLUMN_LABEL = "State"; |
| private static final String DESCRIPTION_COLUMN_LABEL = "Description"; |
| |
| private static final int DEFAULT_COLUMN_WIDTH_INCREMENT = 0; |
| private static final String DEFAULT_FIELD_PREAMBLE = " "; |
| private static final String DEFAULT_FIELD_POSTAMBLE = " "; |
| private static final String DEFAULT_HEADER_PREAMBLE = " "; |
| private static final String DEFAULT_HEADER_POSTAMBLE = " "; |
| private static final int DEFAULT_FORMAT_BUFFER_LENGTH = 24; |
| // endpoint uris can be very long so clip by default after 120 chars |
| private static final int MAX_COLUMN_WIDTH = 120; |
| private static final int MIN_COLUMN_WIDTH = 12; |
| |
| boolean decode = true; |
| boolean verbose; |
| boolean explain; |
| private final String context; |
| |
| public ValidatorListCommand(String context, boolean decode, boolean verbose, boolean explain) { |
| this.decode = decode; |
| this.verbose = verbose; |
| this.explain = explain; |
| this.context = context; |
| } |
| |
| @Override |
| public Object execute(CamelController camelController, PrintStream out, PrintStream err) throws Exception { |
| final List<Map<String, String>> camelContextInfos = camelController.getCamelContexts(this.context); |
| final Map<String, List<Map<String, String>>> contextsToValidators = new HashMap<>(); |
| |
| for (Map<String, String> camelContextInfo : camelContextInfos) { |
| String camelContextName = camelContextInfo.get("name"); |
| final List<Map<String, String>> validators = camelController.getValidators(camelContextName); |
| if (validators.isEmpty()) { |
| continue; |
| } |
| contextsToValidators.put(camelContextName, validators); |
| } |
| |
| final Map<String, Integer> columnWidths = computeColumnWidths(contextsToValidators); |
| final String headerFormat = buildFormatString(columnWidths, true); |
| final String rowFormat = buildFormatString(columnWidths, false); |
| |
| for (Map.Entry<String, List<Map<String, String>>> stringListEntry : contextsToValidators.entrySet()) { |
| final String camelContextName = stringListEntry.getKey(); |
| final List<Map<String, String>> validators = stringListEntry.getValue(); |
| |
| if (verbose) { |
| out.println(String.format(headerFormat, CONTEXT_NAME_COLUMN_LABEL, TYPE_COLUMN_LABEL, STATE_COLUMN_LABEL, DESCRIPTION_COLUMN_LABEL)); |
| out.println(String.format(headerFormat, "-------", "----", "-----", "-----------")); |
| } else { |
| out.println(String.format(headerFormat, CONTEXT_NAME_COLUMN_LABEL, TYPE_COLUMN_LABEL, STATE_COLUMN_LABEL)); |
| out.println(String.format(headerFormat, "-------", "----", "-----")); |
| } |
| for (Map<String, String> row : validators) { |
| String type = row.get("type"); |
| String state = row.get("state"); |
| if (verbose) { |
| String desc = row.get("description"); |
| out.println(String.format(rowFormat, camelContextName, type, state, desc)); |
| } else { |
| out.println(String.format(rowFormat, camelContextName, type, state)); |
| } |
| } |
| } |
| return null; |
| } |
| |
| private Map<String, Integer> computeColumnWidths(final Map<String, List<Map<String, String>>> contextsToValidators) throws Exception { |
| int maxCamelContextLen = 0; |
| int maxTypeLen = 0; |
| int maxStatusLen = 0; |
| int maxDescLen = 0; |
| |
| for (Map.Entry<String, List<Map<String, String>>> stringListEntry : contextsToValidators.entrySet()) { |
| final String camelContextName = stringListEntry.getKey(); |
| |
| maxCamelContextLen = java.lang.Math.max(maxCamelContextLen, camelContextName.length()); |
| |
| final List<Map<String, String>> validators = stringListEntry.getValue(); |
| |
| |
| for (Map<String, String> row : validators) { |
| String type = row.get("type"); |
| maxTypeLen = java.lang.Math.max(maxTypeLen, type == null ? 0 : type.length()); |
| String status = row.get("state"); |
| maxStatusLen = java.lang.Math.max(maxStatusLen, status == null ? 0 : status.length()); |
| if (verbose) { |
| String desc = row.get("description"); |
| maxDescLen = java.lang.Math.max(maxDescLen, desc == null ? 0 : desc.length()); |
| } |
| } |
| } |
| |
| final Map<String, Integer> retval = new Hashtable<>(); |
| retval.put(CONTEXT_NAME_COLUMN_LABEL, maxCamelContextLen); |
| retval.put(TYPE_COLUMN_LABEL, maxTypeLen); |
| retval.put(STATE_COLUMN_LABEL, maxStatusLen); |
| if (verbose) { |
| retval.put(DESCRIPTION_COLUMN_LABEL, maxDescLen); |
| } |
| |
| return retval; |
| } |
| |
| private String buildFormatString(final Map<String, Integer> columnWidths, final boolean isHeader) { |
| final String fieldPreamble; |
| final String fieldPostamble; |
| final int columnWidthIncrement; |
| |
| if (isHeader) { |
| fieldPreamble = DEFAULT_HEADER_PREAMBLE; |
| fieldPostamble = DEFAULT_HEADER_POSTAMBLE; |
| } else { |
| fieldPreamble = DEFAULT_FIELD_PREAMBLE; |
| fieldPostamble = DEFAULT_FIELD_POSTAMBLE; |
| } |
| columnWidthIncrement = DEFAULT_COLUMN_WIDTH_INCREMENT; |
| |
| int ctxLen = java.lang.Math.min(columnWidths.get(CONTEXT_NAME_COLUMN_LABEL) + columnWidthIncrement, getMaxColumnWidth()); |
| ctxLen = Math.max(MIN_COLUMN_WIDTH, ctxLen); |
| int typeLen = java.lang.Math.min(columnWidths.get(TYPE_COLUMN_LABEL) + columnWidthIncrement, getMaxColumnWidth()); |
| typeLen = Math.max(MIN_COLUMN_WIDTH, typeLen); |
| int stateLen = -1; |
| if (verbose) { |
| stateLen = java.lang.Math.min(columnWidths.get(STATE_COLUMN_LABEL) + columnWidthIncrement, getMaxColumnWidth()); |
| stateLen = Math.max(MIN_COLUMN_WIDTH, stateLen); |
| } |
| // last row does not have min width |
| |
| final StringBuilder retval = new StringBuilder(DEFAULT_FORMAT_BUFFER_LENGTH); |
| retval.append(fieldPreamble).append("%-").append(ctxLen).append('.').append(ctxLen).append('s').append(fieldPostamble).append(' '); |
| retval.append(fieldPreamble).append("%-").append(typeLen).append('.').append(typeLen).append('s').append(fieldPostamble).append(' '); |
| if (verbose) { |
| retval.append(fieldPreamble).append("%-").append(stateLen).append('.').append(stateLen).append('s').append(fieldPostamble).append(' '); |
| } |
| retval.append(fieldPreamble).append("%s").append(fieldPostamble).append(' '); |
| |
| return retval.toString(); |
| } |
| |
| private int getMaxColumnWidth() { |
| if (verbose) { |
| return Integer.MAX_VALUE; |
| } else { |
| return MAX_COLUMN_WIDTH; |
| } |
| } |
| } |