Adjust connector icons (#20547)

* Adjust connector icons

* Update icons

* Add missing icons

* Remove missing icon from spec

* Add trailing newline

* Fix test

airbyte-config/init/build.gradle

@@ -28,3 +28,52 @@ tasks.named("buildDockerImage") {
 }
 
 Task publishArtifactsTask = getPublishArtifactsTask("$rootProject.ext.version", project)
+
+/**
+ * Simple task that checks if all icons in the seed definition files exist as well as
+ * that no icon in the icons folder is unused.
+ */
+class IconValidationTask extends DefaultTask {
+
+    private slurper = new groovy.yaml.YamlSlurper()
+
+    @InputFile
+    File sourceDefinitions = project.file("src/main/resources/seed/source_definitions.yaml")
+
+    @InputFile
+    File destinationDefinitions = project.file("src/main/resources/seed/destination_definitions.yaml")
+
+    @InputDirectory
+    File iconDirectory = project.file("src/main/resources/icons")
+
+    private String[] getIconsFromYaml(File file) {
+        def yaml = this.slurper.parse(file.newReader())
+        return yaml.collect { it.icon }.findAll { it != null }
+    }
+
+    @TaskAction
+    void validateIcons() {
+        def sourceIcons = this.getIconsFromYaml(this.sourceDefinitions)
+        def destinationIcons = this.getIconsFromYaml(this.destinationDefinitions)
+        def icons = sourceIcons.plus(destinationIcons) as Collection<String>
+
+        def iconFiles = project.fileTree(this.iconDirectory).collect { it.name }
+        def nonExistingIconFiles = icons - iconFiles
+        def orphanedFiles = iconFiles - icons.intersect(iconFiles)
+
+        def errors = []
+        if (!nonExistingIconFiles.isEmpty()) {
+            errors.push("The following icon files have been referenced inside the seed files, but don't exist:\n\n${nonExistingIconFiles.join('\n')}")
+        }
+        if (!orphanedFiles.isEmpty()) {
+            errors.push("The following icons are not used in the seed files and should be removed:\n\n${orphanedFiles.join('\n')}")
+        }
+
+        if (!errors.isEmpty()) {
+            throw new Error(errors.join('\n\n'))
+        }
+    }
+}
+
+task validateIcons(type: IconValidationTask)
+check.dependsOn validateIcons