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The following commit(s) were added to refs/heads/main by this push:
new 15c67534785 CAMEL-18600: properties component - Allow to turn off
nested placeholders
15c67534785 is described below
commit 15c675347854f3eb1546e0fcd74845af8cca0e4d
Author: Claus Ibsen <claus.ib...@gmail.com>
AuthorDate: Tue Oct 11 10:57:13 2022 +0200
CAMEL-18600: properties component - Allow to turn off nested placeholders
---
.../org/apache/camel/spi/PropertiesComponent.java | 6 +++
.../properties/PropertiesComponentConfigurer.java | 6 +++
.../properties/DefaultPropertiesParser.java | 48 +++++++++++++++---
.../component/properties/PropertiesComponent.java | 18 ++++++-
.../component/properties/PropertiesParser.java | 7 ++-
.../PropertiesComponentNestedFalseTest.java | 57 ++++++++++++++++++++++
.../properties/PropertiesComponentNestedTest.java | 56 +++++++++++++++++++++
7 files changed, 190 insertions(+), 8 deletions(-)
diff --git
a/core/camel-api/src/main/java/org/apache/camel/spi/PropertiesComponent.java
b/core/camel-api/src/main/java/org/apache/camel/spi/PropertiesComponent.java
index 4c284a7618f..a49fbc81bd6 100644
--- a/core/camel-api/src/main/java/org/apache/camel/spi/PropertiesComponent.java
+++ b/core/camel-api/src/main/java/org/apache/camel/spi/PropertiesComponent.java
@@ -204,6 +204,12 @@ public interface PropertiesComponent extends StaticService
{
*/
void setIgnoreMissingLocation(boolean ignoreMissingLocation);
+ /**
+ * Whether to support nested property placeholders. A nested placeholder,
means that a placeholder, has also a
+ * placeholder, that should be resolved (recursively).
+ */
+ void setNestedPlaceholder(boolean nestedPlaceholder);
+
/**
* Sets initial properties which will be added before any property
locations are loaded.
*/
diff --git
a/core/camel-base/src/generated/java/org/apache/camel/component/properties/PropertiesComponentConfigurer.java
b/core/camel-base/src/generated/java/org/apache/camel/component/properties/PropertiesComponentConfigurer.java
index 9da5505251a..a41836deb51 100644
---
a/core/camel-base/src/generated/java/org/apache/camel/component/properties/PropertiesComponentConfigurer.java
+++
b/core/camel-base/src/generated/java/org/apache/camel/component/properties/PropertiesComponentConfigurer.java
@@ -41,6 +41,8 @@ public class PropertiesComponentConfigurer extends
org.apache.camel.support.comp
case "Location": target.setLocation(property(camelContext,
java.lang.String.class, value)); return true;
case "locations":
case "Locations": target.setLocations(property(camelContext,
java.util.List.class, value)); return true;
+ case "nestedplaceholder":
+ case "NestedPlaceholder":
target.setNestedPlaceholder(property(camelContext, boolean.class, value));
return true;
case "overrideproperties":
case "OverrideProperties":
target.setOverrideProperties(property(camelContext, java.util.Properties.class,
value)); return true;
case "propertiesfunctionresolver":
@@ -76,6 +78,8 @@ public class PropertiesComponentConfigurer extends
org.apache.camel.support.comp
case "Location": return java.lang.String.class;
case "locations":
case "Locations": return java.util.List.class;
+ case "nestedplaceholder":
+ case "NestedPlaceholder": return boolean.class;
case "overrideproperties":
case "OverrideProperties": return java.util.Properties.class;
case "propertiesfunctionresolver":
@@ -112,6 +116,8 @@ public class PropertiesComponentConfigurer extends
org.apache.camel.support.comp
case "Location": return target.getLocation();
case "locations":
case "Locations": return target.getLocations();
+ case "nestedplaceholder":
+ case "NestedPlaceholder": return target.isNestedPlaceholder();
case "overrideproperties":
case "OverrideProperties": return target.getOverrideProperties();
case "propertiesfunctionresolver":
diff --git
a/core/camel-base/src/main/java/org/apache/camel/component/properties/DefaultPropertiesParser.java
b/core/camel-base/src/main/java/org/apache/camel/component/properties/DefaultPropertiesParser.java
index aed9f3c6ebc..5f74bf043a3 100644
---
a/core/camel-base/src/main/java/org/apache/camel/component/properties/DefaultPropertiesParser.java
+++
b/core/camel-base/src/main/java/org/apache/camel/component/properties/DefaultPropertiesParser.java
@@ -62,9 +62,11 @@ public class DefaultPropertiesParser implements
PropertiesParser {
@Override
public String parseUri(
- String text, PropertiesLookup properties, boolean
defaultFallbackEnabled, boolean keepUnresolvedOptional)
+ String text, PropertiesLookup properties, boolean
defaultFallbackEnabled, boolean keepUnresolvedOptional,
+ boolean nestedPlaceholder)
throws IllegalArgumentException {
- ParsingContext context = new ParsingContext(properties,
defaultFallbackEnabled, keepUnresolvedOptional);
+ ParsingContext context
+ = new ParsingContext(properties, defaultFallbackEnabled,
keepUnresolvedOptional, nestedPlaceholder);
String answer = context.parse(text);
if (keepUnresolvedOptional && answer != null &&
answer.contains(UNRESOLVED_PREFIX_TOKEN)) {
// replace temporary unresolved keys back to with placeholders so
they are kept as-is
@@ -86,11 +88,14 @@ public class DefaultPropertiesParser implements
PropertiesParser {
private final PropertiesLookup properties;
private final boolean defaultFallbackEnabled;
private final boolean keepUnresolvedOptional;
+ private final boolean nestedPlaceholder;
- ParsingContext(PropertiesLookup properties, boolean
defaultFallbackEnabled, boolean keepUnresolvedOptional) {
+ ParsingContext(PropertiesLookup properties, boolean
defaultFallbackEnabled, boolean keepUnresolvedOptional,
+ boolean nestedPlaceholder) {
this.properties = properties;
this.defaultFallbackEnabled = defaultFallbackEnabled;
this.keepUnresolvedOptional = keepUnresolvedOptional;
+ this.nestedPlaceholder = nestedPlaceholder;
}
/**
@@ -100,7 +105,38 @@ public class DefaultPropertiesParser implements
PropertiesParser {
* @return Evaluated string
*/
public String parse(String input) {
- return doParse(input, new HashSet<String>());
+ if (nestedPlaceholder) {
+ return doParseNested(input, new HashSet<String>());
+ } else {
+ return doParse(input);
+ }
+ }
+
+ /**
+ * Parses the given input string and replaces all properties (not
nested)
+ *
+ * @param input Input string
+ * @return Evaluated string
+ */
+ private String doParse(String input) {
+ if (input == null) {
+ return null;
+ }
+
+ StringBuilder answer = new StringBuilder();
+ Property property;
+ while ((property = readProperty(input)) != null) {
+ String before = input.substring(0, property.getBeginIndex());
+ String after = input.substring(property.getEndIndex());
+ String parsed = property.getValue();
+ if (parsed != null) {
+ answer.append(before);
+ answer.append(parsed);
+ }
+ input = after;
+ }
+ answer.append(input);
+ return answer.toString();
}
/**
@@ -110,7 +146,7 @@ public class DefaultPropertiesParser implements
PropertiesParser {
* @param replacedPropertyKeys Already replaced property keys used
for tracking circular references
* @return Evaluated string
*/
- private String doParse(String input, Set<String> replacedPropertyKeys)
{
+ private String doParseNested(String input, Set<String>
replacedPropertyKeys) {
if (input == null) {
return null;
}
@@ -133,7 +169,7 @@ public class DefaultPropertiesParser implements
PropertiesParser {
String before = answer.substring(0, property.getBeginIndex());
String after = answer.substring(property.getEndIndex());
- String parsed = doParse(property.getValue(), newReplaced);
+ String parsed = doParseNested(property.getValue(),
newReplaced);
if (parsed != null) {
answer = before + parsed + after;
} else {
diff --git
a/core/camel-base/src/main/java/org/apache/camel/component/properties/PropertiesComponent.java
b/core/camel-base/src/main/java/org/apache/camel/component/properties/PropertiesComponent.java
index d7e53a0fed2..da06caa6b2e 100644
---
a/core/camel-base/src/main/java/org/apache/camel/component/properties/PropertiesComponent.java
+++
b/core/camel-base/src/main/java/org/apache/camel/component/properties/PropertiesComponent.java
@@ -114,6 +114,7 @@ public class PropertiesComponent extends ServiceSupport
private List<PropertiesLocation> locations = new ArrayList<>();
private String location;
private boolean ignoreMissingLocation;
+ private boolean nestedPlaceholder = true;
private String encoding;
private boolean defaultFallbackEnabled = true;
private Properties initialProperties;
@@ -310,7 +311,8 @@ public class PropertiesComponent extends ServiceSupport
key = PREFIX_TOKEN + key.substring(NEGATE_PREFIX.length());
}
- String answer = propertiesParser.parseUri(key, properties,
defaultFallbackEnabled, keepUnresolvedOptional);
+ String answer
+ = propertiesParser.parseUri(key, properties,
defaultFallbackEnabled, keepUnresolvedOptional, nestedPlaceholder);
if (negate) {
if ("true".equalsIgnoreCase(answer)) {
answer = "false";
@@ -461,6 +463,20 @@ public class PropertiesComponent extends ServiceSupport
this.ignoreMissingLocation = ignoreMissingLocation;
}
+ @ManagedAttribute(description = "Nested placeholder")
+ public boolean isNestedPlaceholder() {
+ return nestedPlaceholder;
+ }
+
+ /**
+ * Whether to support nested property placeholders. A nested placeholder,
means that a placeholder, has also a
+ * placeholder, that should be resolved (recursively).
+ */
+ @Override
+ public void setNestedPlaceholder(boolean nestedPlaceholder) {
+ this.nestedPlaceholder = nestedPlaceholder;
+ }
+
/**
* @return a list of properties which will be used before any locations
are resolved (can't be null).
*/
diff --git
a/core/camel-base/src/main/java/org/apache/camel/component/properties/PropertiesParser.java
b/core/camel-base/src/main/java/org/apache/camel/component/properties/PropertiesParser.java
index d2516403275..cb9f1cd67f0 100644
---
a/core/camel-base/src/main/java/org/apache/camel/component/properties/PropertiesParser.java
+++
b/core/camel-base/src/main/java/org/apache/camel/component/properties/PropertiesParser.java
@@ -28,10 +28,15 @@ public interface PropertiesParser {
* @param properties the properties resolved which values
should be looked up
* @param fallback whether to support using fallback
values if a property cannot be found
* @param keepUnresolvedOptional whether to keep placeholders that are
optional and was unresolved
+ * @param nestedPlaceholder whether to support nested property
placeholders. A nested placeholder, means
+ * that a placeholder, has also a
placeholder, that should be resolved
+ * (recursively).
* @return the parsed text with replaced
placeholders
* @throws IllegalArgumentException if uri syntax is not valid or a
property is not found
*/
- String parseUri(String text, PropertiesLookup properties, boolean
fallback, boolean keepUnresolvedOptional)
+ String parseUri(
+ String text, PropertiesLookup properties, boolean fallback,
boolean keepUnresolvedOptional,
+ boolean nestedPlaceholder)
throws IllegalArgumentException;
/**
diff --git
a/core/camel-core/src/test/java/org/apache/camel/component/properties/PropertiesComponentNestedFalseTest.java
b/core/camel-core/src/test/java/org/apache/camel/component/properties/PropertiesComponentNestedFalseTest.java
new file mode 100644
index 00000000000..4e5ca7b194a
--- /dev/null
+++
b/core/camel-core/src/test/java/org/apache/camel/component/properties/PropertiesComponentNestedFalseTest.java
@@ -0,0 +1,57 @@
+/*
+ * 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.component.properties;
+
+import org.apache.camel.CamelContext;
+import org.apache.camel.ContextTestSupport;
+import org.apache.camel.builder.RouteBuilder;
+import org.junit.jupiter.api.Test;
+
+public class PropertiesComponentNestedFalseTest extends ContextTestSupport {
+
+ @Test
+ public void testNestedFalse() throws Exception {
+
getMockEndpoint("mock:result").expectedBodiesReceived("mock:{{cool.result}}");
+ getMockEndpoint("mock:result").expectedHeaderReceived("foo", "Hello
mock:{{cool.result}} and Cheese how are you?");
+
+ template.sendBody("direct:start", "Hello World");
+
+ assertMockEndpointsSatisfied();
+ }
+
+ @Override
+ protected RouteBuilder createRouteBuilder() throws Exception {
+ return new RouteBuilder() {
+ @Override
+ public void configure() throws Exception {
+ from("direct:start")
+ .setBody().constant("{{cool.concat}}")
+ .setHeader("foo").constant("Hello {{cool.concat}} and
{{cool.other.name}} how are you?")
+ .to("mock:result");
+ }
+ };
+ }
+
+ @Override
+ protected CamelContext createCamelContext() throws Exception {
+ CamelContext context = super.createCamelContext();
+
context.getPropertiesComponent().setLocation("classpath:org/apache/camel/component/properties/myproperties.properties");
+ context.getPropertiesComponent().setNestedPlaceholder(false);
+ return context;
+ }
+
+}
diff --git
a/core/camel-core/src/test/java/org/apache/camel/component/properties/PropertiesComponentNestedTest.java
b/core/camel-core/src/test/java/org/apache/camel/component/properties/PropertiesComponentNestedTest.java
new file mode 100644
index 00000000000..a1e6a5613fe
--- /dev/null
+++
b/core/camel-core/src/test/java/org/apache/camel/component/properties/PropertiesComponentNestedTest.java
@@ -0,0 +1,56 @@
+/*
+ * 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.component.properties;
+
+import org.apache.camel.CamelContext;
+import org.apache.camel.ContextTestSupport;
+import org.apache.camel.builder.RouteBuilder;
+import org.junit.jupiter.api.Test;
+
+public class PropertiesComponentNestedTest extends ContextTestSupport {
+
+ @Test
+ public void testNested() throws Exception {
+ getMockEndpoint("mock:result").expectedBodiesReceived("mock:result");
+ getMockEndpoint("mock:result").expectedHeaderReceived("foo", "Hello
mock:result and Cheese how are you?");
+
+ template.sendBody("direct:start", "Hello World");
+
+ assertMockEndpointsSatisfied();
+ }
+
+ @Override
+ protected RouteBuilder createRouteBuilder() throws Exception {
+ return new RouteBuilder() {
+ @Override
+ public void configure() throws Exception {
+ from("direct:start")
+ .setBody().constant("{{cool.concat}}")
+ .setHeader("foo").constant("Hello {{cool.concat}} and
{{cool.other.name}} how are you?")
+ .to("mock:result");
+ }
+ };
+ }
+
+ @Override
+ protected CamelContext createCamelContext() throws Exception {
+ CamelContext context = super.createCamelContext();
+
context.getPropertiesComponent().setLocation("classpath:org/apache/camel/component/properties/myproperties.properties");
+ return context;
+ }
+
+}
