From 4f841008c81d56fdabcd78b4a0585de7108c89cf Mon Sep 17 00:00:00 2001
From: Andrew Azores <aazores@redhat.com>
Date: Wed, 3 Nov 2021 13:53:04 -0400
Subject: [PATCH] feat(hotreload): create configuration for hot-reload dev
 server

---
 README.md    | 16 ++++++++++++----
 pom.xml      | 10 ++++++++++
 run-local.sh | 26 ++++++++++++++++----------
 3 files changed, 38 insertions(+), 14 deletions(-)

diff --git a/README.md b/README.md
index 9995b59b72..9153c8a58a 100644
--- a/README.md
+++ b/README.md
@@ -46,13 +46,21 @@ Run Requirements:
 ### Build project locally
 * `mvn compile`
 
+### Build and run project locally in development hot-reload mode
+* `sh run-local.sh` - this will start the Vert.x backend in hot-reload mode, so
+any modifications to files in `src/` will cause a re-compilation and re-deploy.
+This is only intended for use during development. The `web-client` assets will
+not be built and will not be included in the application classpath. To set up
+the `web-client` frontend for hot-reload development, see
+[cryostat-web Development Server](https://github.com/cryostatio/cryostat-web/blob/main/README.md#development-server).
 
 ### Build and push to local podman image registry
 * `mvn package`
-* Run `mvn -Dcryostat.minimal=true clean package` to exclude web-client assets. The
-`clean` phase should always be specified here, or else previously-generated
+* Run `mvn -Dcryostat.minimal=true clean package` to exclude web-client assets.
+The `clean` phase should always be specified here, or else previously-generated
 client assets will still be included into the built image.
-* For other OCI builders, use the `imageBuilder` Maven property. For example, to use docker run: `mvn -DimageBuilder=$(which docker) clean verify`
+* For other OCI builders, use the `imageBuilder` Maven property. For example, to
+use docker, run: `mvn -DimageBuilder=$(which docker) clean verify`
 
 ## TEST
 
@@ -62,7 +70,7 @@ client assets will still be included into the built image.
 ### Integration tests and analysis tools
 * `mvn verify`
 
-### Skipping tests 
+### Skipping tests
 * `-DskipUTs=true` to skip unit tests
 * `-DskipITs=true` to skip integration tests
 * `-DskipTests=true` to skip all tests
diff --git a/pom.xml b/pom.xml
index 3372406eb8..c439a40f19 100644
--- a/pom.xml
+++ b/pom.xml
@@ -43,6 +43,7 @@
   <cryostat.itest.jfr-datasource.imageStream>quay.io/cryostat/jfr-datasource</cryostat.itest.jfr-datasource.imageStream>
   <cryostat.itest.jfr-datasource.version>1.0.0</cryostat.itest.jfr-datasource.version>
 
+  <io.reactiverse.plugin.version>1.0.25</io.reactiverse.plugin.version>
   <org.apache.maven.plugins.compiler.version>3.8.1</org.apache.maven.plugins.compiler.version>
   <org.apache.maven.plugins.surefire.version>2.22.2</org.apache.maven.plugins.surefire.version>
   <org.apache.maven.plugins.failsafe.version>${org.apache.maven.plugins.surefire.version}</org.apache.maven.plugins.failsafe.version>
@@ -217,6 +218,15 @@
 
 <build>
   <plugins>
+    <plugin>
+      <groupId>io.reactiverse</groupId>
+      <artifactId>vertx-maven-plugin</artifactId>
+      <version>${io.reactiverse.plugin.version}</version>
+      <configuration>
+        <redeploy>true</redeploy>
+        <launcher>io.cryostat.Cryostat</launcher>
+      </configuration>
+    </plugin>
     <plugin>
       <groupId>org.apache.maven.plugins</groupId>
       <artifactId>maven-compiler-plugin</artifactId>
diff --git a/run-local.sh b/run-local.sh
index c73366a6b9..04a8079d17 100755
--- a/run-local.sh
+++ b/run-local.sh
@@ -1,18 +1,23 @@
 #!/bin/sh
 
+script_dir="$(dirname $(realpath $0))"
+
 if [ -z $MVN ]; then
     MVN=$(which mvn)
 fi
 
-if [ ! -f target/classes/io/cryostat/Cryostat.class ]; then
-    echo "Ensure you have done 'mvn prepare-package' before running this script"
-    exit 1
-fi
-
-script_dir="$(dirname $(realpath $0))"
+for i in archive clientlib conf templates; do
+    if [ -e $i ]; then
+        if [ ! -d $i ]; then
+            echo "$i already exists but is not a directory"
+            exit 1
+        fi
+    else
+        mkdir $i
+    fi
+done
 
 flags=(
-    "-Dvertxweb.environment=dev"
     "-Dcom.sun.management.jmxremote.autodiscovery=true"
     "-Dcom.sun.management.jmxremote.port=9091"
     "-Dcom.sun.management.jmxremote.rmi.port=9091"
@@ -25,11 +30,12 @@ MAVEN_OPTS="${flags[@]}" \
     CRYOSTAT_PLATFORM=io.cryostat.platform.internal.DefaultPlatformStrategy \
     CRYOSTAT_DISABLE_SSL=true \
     CRYOSTAT_DISABLE_JMX_AUTH=true \
-    CRYOSTAT_WEB_HOST=$(hostname) \
-    CRYOSTAT_WEB_PORT=8080 \
+    CRYOSTAT_WEB_HOST=localhost \
+    CRYOSTAT_WEB_PORT=8181 \
+    CRYOSTAT_CORS_ORIGIN=http://localhost:9000 \
     CRYOSTAT_AUTH_MANAGER=io.cryostat.net.NoopAuthManager \
     CRYOSTAT_ARCHIVE_PATH="$script_dir/archive" \
     CRYOSTAT_CLIENTLIB_PATH="$script_dir/clientlib" \
     CRYOSTAT_CONFIG_PATH="$script_dir/conf" \
     CRYOSTAT_TEMPLATE_PATH="$script_dir/templates" \
-    $MVN exec:java
+    $MVN vertx:run