feat: extract core flagd evaluation and API modules (#1696)

Signed-off-by: Todd Baert <todd.baert@dynatrace.com>

Author: toddbaert

.github/workflows/release-please.yml

@@ -65,11 +65,12 @@ jobs:
         # This means there's no way to skip publishing of a particular module in a multi-module build, so we iterate over each module and publish them individually,
         # letting exists-maven-plugin skip the nexus-staging-maven-plugin's entire deploy goal if the artifact exists.
         run: |
+          FLAGD_CORE_VERSION=$(cat tools/flagd-core/version.txt)
           mvn --non-recursive --batch-mode --settings release/m2-settings.xml -DskipTests -Dcheckstyle.skip clean deploy
           modules=($(cat pom.xml | grep "<module>" | sed 's/\s*<.*>\(.*\)<.*>/\1/'))
           for module in "${modules[@]}"
           do
-              mvn --batch-mode --projects $module --settings release/m2-settings.xml -DskipTests -Dcheckstyle.skip clean deploy
+              mvn --batch-mode --projects $module --settings release/m2-settings.xml -DskipTests -Dcheckstyle.skip -Dflagd-core.version=$FLAGD_CORE_VERSION clean deploy
           done
         env:
           CENTRAL_USERNAME: ${{ secrets.CENTRAL_USERNAME }}

.gitmodules

@@ -11,3 +11,6 @@
 [submodule "providers/go-feature-flag/wasm-releases"]
 	path = providers/go-feature-flag/wasm-releases
 	url = https://github.com/go-feature-flag/wasm-releases.git
+[submodule "tools/flagd-core/schemas"]
+	path = tools/flagd-core/schemas
+	url = https://github.com/open-feature/schemas.git

.release-please-manifest.json

@@ -13,5 +13,7 @@
   "providers/ofrep": "0.0.1",
   "tools/junit-openfeature": "0.2.1",
   "tools/flagd-http-connector": "0.0.4",
+  "tools/flagd-api": "0.0.1",
+  "tools/flagd-core": "0.0.1",
   ".": "1.0.0"
 }

pom.xml

@@ -30,6 +30,8 @@
     <modules>
         <module>hooks/open-telemetry</module>
         <module>tools/junit-openfeature</module>
+        <module>tools/flagd-api</module>
+        <module>tools/flagd-core</module>
         <module>providers/flagd</module>
         <module>providers/flagsmith</module>
         <module>providers/go-feature-flag</module>

providers/flagd/pom.xml

@@ -20,6 +20,8 @@
         <!-- caution - updating this will break compatibility with older protobuf-java versions -->
         <protobuf-java.min.version>3.25.6</protobuf-java.min.version>
         <com.vmlens.version>1.2.24</com.vmlens.version>
+        <!-- Match any core version locally- at release, CI sets exact version: -Dflagd-core.version=$(cat tools/flagd-core/version.txt) -->
+        <flagd-core.version>[0.0.1,)</flagd-core.version>
     </properties>
 
     <name>flagd</name>
@@ -38,6 +40,13 @@
     <dependencies>
         <!-- we inherent dev.openfeature.javasdk and the test dependencies from the parent pom -->
 
+        <!-- flagd core evaluation logic -->
+        <dependency>
+            <groupId>dev.openfeature.contrib.tools</groupId>
+            <artifactId>flagd-core</artifactId>
+            <version>${flagd-core.version}</version>
+        </dependency>
+
         <dependency>
             <groupId>com.google.protobuf</groupId>
             <artifactId>protobuf-java</artifactId>
@@ -63,37 +72,6 @@
 
         <!-- grpc-netty-shaded bundles netty with epoll support for unix sockets -->
 
-        <dependency>
-            <groupId>com.fasterxml.jackson.core</groupId>
-            <artifactId>jackson-databind</artifactId>
-            <version>2.20.1</version>
-        </dependency>
-
-        <dependency>
-            <groupId>io.github.jamsesso</groupId>
-            <artifactId>json-logic-java</artifactId>
-            <version>1.1.0</version>
-        </dependency>
-
-        <!-- Override gson usage of json-logic-java-->
-        <dependency>
-            <groupId>com.google.code.gson</groupId>
-            <artifactId>gson</artifactId>
-            <version>2.13.1</version>
-        </dependency>
-
-        <dependency>
-            <groupId>com.networknt</groupId>
-            <artifactId>json-schema-validator</artifactId>
-            <version>1.5.9</version>
-            <exclusions>
-                <exclusion>
-                    <groupId>org.apache.commons</groupId>
-                    <artifactId>commons-lang3</artifactId>
-                </exclusion>
-            </exclusions>
-        </dependency>
-
         <dependency>
             <!-- necessary for Java 9+ -->
             <groupId>org.apache.tomcat</groupId>
@@ -108,30 +86,12 @@
             <version>4.5.0</version>
         </dependency>
 
-        <dependency>
-            <groupId>org.apache.commons</groupId>
-            <artifactId>commons-lang3</artifactId>
-            <version>3.20.0</version>
-        </dependency>
-
         <dependency>
             <groupId>io.opentelemetry</groupId>
             <artifactId>opentelemetry-api</artifactId>
             <version>1.56.0</version>
         </dependency>
 
-        <dependency>
-            <groupId>org.semver4j</groupId>
-            <artifactId>semver4j</artifactId>
-            <version>5.8.0</version>
-        </dependency>
-
-        <dependency>
-            <groupId>commons-codec</groupId>
-            <artifactId>commons-codec</artifactId>
-            <version>1.20.0</version>
-        </dependency>
-
         <dependency>
             <groupId>org.junit.jupiter</groupId>
             <artifactId>junit-jupiter</artifactId>
@@ -213,7 +173,7 @@
                             <goal>exec</goal>
                         </goals>
                         <configuration>
-                            <!-- run: git submodule update \-\-init schemas -->
+                            <!-- run: git submodule update \-\-init schemas for protos -->
                             <executable>git</executable>
                             <arguments>
                                 <argument>submodule</argument>
@@ -225,31 +185,6 @@
                     </execution>
                 </executions>
             </plugin>
-            <plugin>
-                <artifactId>maven-resources-plugin</artifactId>
-                <version>3.3.1</version>
-                <executions>
-                    <execution>
-                        <id>copy-json-schemas</id>
-                        <phase>generate-resources</phase>
-                        <goals>
-                            <goal>copy-resources</goal>
-                        </goals>
-                        <configuration>
-                            <outputDirectory>${basedir}/src/main/resources/flagd/schemas/</outputDirectory>
-                            <resources>
-                                <resource>
-                                    <directory>${basedir}/schemas/json/</directory>
-                                    <includes>
-                                        <include>flags.json</include>
-                                        <include>targeting.json</include>
-                                    </includes>
-                                </resource>
-                            </resources>
-                        </configuration>
-                    </execution>
-                </executions>
-            </plugin>
 
             <plugin>
                 <groupId>org.xolstice.maven.plugins</groupId>