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new da9b9290287 CAMEL-20178: camel-jbang - Transform message to support
components
da9b9290287 is described below
commit da9b929028745bb2df923e2f3c8712ad09efbe83
Author: Claus Ibsen <[email protected]>
AuthorDate: Sun Dec 3 17:45:27 2023 +0100
CAMEL-20178: camel-jbang - Transform message to support components
---
.../modules/ROOT/pages/camel-jbang.adoc | 50 ++++++++++++++++++++++
.../camel/cli/connector/LocalCliConnector.java | 18 +++++++-
.../commands/action/TransformMessageAction.java | 16 +++++--
3 files changed, 79 insertions(+), 5 deletions(-)
diff --git a/docs/user-manual/modules/ROOT/pages/camel-jbang.adoc
b/docs/user-manual/modules/ROOT/pages/camel-jbang.adoc
index 6e36e24ba63..fa67359692b 100644
--- a/docs/user-manual/modules/ROOT/pages/camel-jbang.adoc
+++ b/docs/user-manual/modules/ROOT/pages/camel-jbang.adoc
@@ -2386,6 +2386,56 @@ You can also transform the message from JSon to XML as
shown (or any other kind
id: setBody-fa01
----
+=== Transforming message using Components
+
+Some components can also be used for message transformation such as Flatpack,
Velocity, Freemarker, Thymaleaf, and good old XSLT.
+
+TIP: You can use `camel catalog component --filter=transform` to see which
components can be transformation.
+
+Given the below XML in the `sample.xml` file:
+
+[source,xml]
+----
+<hash>
+ <id type="integer">1369</id>
+ <uid>8c946e1a-fdc5-40d3-9098-44271bdfad65</uid>
+ <account-number>8673088731</account-number>
+ <iban>GB38EFUA27474531363797</iban>
+ <bank-name>ABN AMRO MEZZANINE (UK) LIMITED</bank-name>
+ <routing-number>053228004</routing-number>
+ <swift-bic>AACCGB21</swift-bic>
+</hash>
+----
+
+Then you can transform this using an XSLT named `mystyle.xsl`:
+
+[source,xml]
+----
+<?xml version = "1.0"?>
+<xsl:stylesheet version="1.0" xmlns:xsl="http://www.w3.org/1999/XSL/Transform";>
+
+ <xsl:template match="/">
+ <bank>
+ <name><xsl:value-of select="/hash/bank-name/text()"/></name>
+ <bic><xsl:value-of select="/hash/swift-bic/text()"/></bic>
+ </bank>
+ </xsl:template>
+
+</xsl:stylesheet>
+----
+
+Then you can do live changes to the stylesheet and see the output in real-time
with Camel JBang by running:
+
+[source,bash]
+----
+$ camel transform message --body=file:sample.xml --component=xslt
--template=file:mystyle.xsl --pretty --watch
+----
+
+You can then edit the `mystyle.xsl` file, and save the file, and watch the
terminal for updated result.
+
+You can find this example at:
https://github.com/apache/camel-kamelets-examples/tree/main/jbang/xslt-transform
+
+
== Listing what Camel components is available
Camel comes with a lot of artifacts out of the box which comes as:
diff --git
a/dsl/camel-cli-connector/src/main/java/org/apache/camel/cli/connector/LocalCliConnector.java
b/dsl/camel-cli-connector/src/main/java/org/apache/camel/cli/connector/LocalCliConnector.java
index 05871e4d527..df593973039 100644
---
a/dsl/camel-cli-connector/src/main/java/org/apache/camel/cli/connector/LocalCliConnector.java
+++
b/dsl/camel-cli-connector/src/main/java/org/apache/camel/cli/connector/LocalCliConnector.java
@@ -64,6 +64,7 @@ import org.apache.camel.model.language.ExpressionDefinition;
import org.apache.camel.spi.CliConnector;
import org.apache.camel.spi.CliConnectorFactory;
import org.apache.camel.spi.ContextReloadStrategy;
+import org.apache.camel.spi.EndpointUriFactory;
import org.apache.camel.spi.Language;
import org.apache.camel.spi.Resource;
import org.apache.camel.spi.ResourceLoader;
@@ -277,8 +278,9 @@ public class LocalCliConnector extends ServiceSupport
implements CliConnector, C
long timestamp = System.currentTimeMillis();
String source = root.getString("source");
String language = root.getString("language");
+ String component = root.getString("component");
String template = Jsoner.unescape(root.getStringOrDefault("template",
""));
- if (template.startsWith("file:")) {
+ if (component == null && template.startsWith("file:")) {
template = "resource:" + template;
}
String body = Jsoner.unescape(root.getString("body"));
@@ -380,6 +382,20 @@ public class LocalCliConnector extends ServiceSupport
implements CliConnector, C
String result = lastSourceExpression.evaluate(out,
String.class);
out.getMessage().setBody(result);
}
+ } else if (component != null) {
+ // transform via component
+ out.setPattern(ExchangePattern.InOut);
+ out.getMessage().setBody(inputBody);
+ if (inputHeaders != null) {
+ out.getMessage().setHeaders(inputHeaders);
+ }
+ String uri = component + ":" + template;
+ // must disable any kind of content cache on the component, so
template is always reloaded
+ EndpointUriFactory euf =
camelContext.getCamelContextExtension().getEndpointUriFactory(component);
+ if (euf.propertyNames().contains("contentCache")) {
+ uri = uri + "?contentCache=false";
+ }
+ out = producer.send(uri, out);
} else {
// transform via language
Language lan = camelContext.resolveLanguage(language);
diff --git
a/dsl/camel-jbang/camel-jbang-core/src/main/java/org/apache/camel/dsl/jbang/core/commands/action/TransformMessageAction.java
b/dsl/camel-jbang/camel-jbang-core/src/main/java/org/apache/camel/dsl/jbang/core/commands/action/TransformMessageAction.java
index fd07c1c96d4..140d6193a70 100644
---
a/dsl/camel-jbang/camel-jbang-core/src/main/java/org/apache/camel/dsl/jbang/core/commands/action/TransformMessageAction.java
+++
b/dsl/camel-jbang/camel-jbang-core/src/main/java/org/apache/camel/dsl/jbang/core/commands/action/TransformMessageAction.java
@@ -64,6 +64,11 @@ public class TransformMessageAction extends
ActionWatchCommand {
description = "The language to use for message
transformation")
private String language;
+ @CommandLine.Option(names = {
+ "--component" },
+ description = "The component to use for message
transformation")
+ private String component;
+
@CommandLine.Option(names = {
"--template" },
description = "The template to use for message
transformation (prefix with file: to refer to loading message body from file)")
@@ -112,12 +117,12 @@ public class TransformMessageAction extends
ActionWatchCommand {
@Override
public Integer doCall() throws Exception {
// either source or language/template is required
- if (source == null && template == null && language == null) {
- System.err.println("Either source or template and language must be
configured");
+ if (source == null && template == null && language == null &&
component == null) {
+ System.err.println("Either source or template and
language/component must be configured");
return -1;
}
- if (source == null && (template == null || language == null)) {
- System.err.println("Both template and language must be
configured");
+ if (source == null && (template == null || language == null &&
component == null)) {
+ System.err.println("Both template and language/component must be
configured");
return -1;
}
@@ -166,6 +171,9 @@ public class TransformMessageAction extends
ActionWatchCommand {
if (language != null) {
root.put("language", language);
}
+ if (component != null) {
+ root.put("component", component);
+ }
if (template != null) {
root.put("template", Jsoner.escape(template));
}
