chore: add variable control

ref: sourceplusplus/sourceplusplus#428

Author: BFergerson

src/main/kotlin/spp/protocol/instrument/LiveBreakpoint.kt

@@ -19,6 +19,7 @@ package spp.protocol.instrument
 import io.vertx.codegen.annotations.DataObject
 import io.vertx.core.json.JsonObject
 import spp.protocol.instrument.throttle.InstrumentThrottle
+import spp.protocol.instrument.variable.LiveVariableControl
 
 /**
  * A live breakpoint represents a non-breaking breakpoint.
@@ -28,6 +29,7 @@ import spp.protocol.instrument.throttle.InstrumentThrottle
  */
 @DataObject
 data class LiveBreakpoint(
+    val variableControl: LiveVariableControl? = null,
     override val location: LiveSourceLocation,
     override val condition: String? = null,
     override val expiresAt: Long? = null,
@@ -42,6 +44,7 @@ data class LiveBreakpoint(
     override val type: LiveInstrumentType = LiveInstrumentType.BREAKPOINT
 
     constructor(json: JsonObject) : this(
+        variableControl = json.getJsonObject("variableControl")?.let { LiveVariableControl(it) },
         location = LiveSourceLocation(json.getJsonObject("location")),
         condition = json.getString("condition"),
         expiresAt = json.getLong("expiresAt"),
@@ -57,6 +60,7 @@ data class LiveBreakpoint(
     override fun toJson(): JsonObject {
         val json = JsonObject()
         json.put("type", type.name)
+        json.put("variableControl", variableControl?.toJson())
         json.put("location", location.toJson())
         json.put("condition", condition)
         json.put("expiresAt", expiresAt)

src/main/kotlin/spp/protocol/instrument/variable/LiveVariableControl.kt

@@ -0,0 +1,46 @@
+/*
+ * Source++, the continuous feedback platform for developers.
+ * Copyright (C) 2022 CodeBrig, Inc.
+ *
+ * Licensed 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 spp.protocol.instrument.variable
+
+import io.vertx.codegen.annotations.DataObject
+import io.vertx.core.json.JsonObject
+
+/**
+ * Allows for fine-grained control over the serialization of [LiveVariable]s.
+ */
+@DataObject
+data class LiveVariableControl(
+    val maxObjectDepth: Int? = null,
+    val maxObjectSize: Int? = null,
+    val maxCollectionLength: Int? = null,
+    val variableTypeConfig: Map<String, LiveVariableControl> = emptyMap(),
+    val variableNameConfig: Map<String, LiveVariableControl> = emptyMap()
+) {
+    constructor(json: JsonObject) : this(
+        maxObjectDepth = json.getInteger("maxObjectDepth"),
+        maxObjectSize = json.getInteger("maxObjectSize"),
+        maxCollectionLength = json.getInteger("maxCollectionLength"),
+        variableTypeConfig = json.getJsonObject("variableTypeConfig")
+            .associate { it.key to LiveVariableControl(it.value as JsonObject) },
+        variableNameConfig = json.getJsonObject("variableNameConfig")
+            .associate { it.key to LiveVariableControl(it.value as JsonObject) }
+    )
+
+    fun toJson(): JsonObject {
+        return JsonObject.mapFrom(this)
+    }
+}