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// Copyright 2017 Yahoo Holdings. Licensed under the terms of the Apache 2.0 license. See LICENSE in the project root.
package com.yahoo.vespa.config;
import com.yahoo.config.codegen.CNode;
import com.yahoo.config.codegen.LeafCNode;
import java.util.Arrays;
/**
* Builds a ConfigDefinition from a tree of CNodes.
*
* @author hmusum
*/
public class ConfigDefinitionBuilder {
/**
* Creates a ConfigDefinition based on a tree generated from parsing a config
* definition file.
*
* @param root the root node in a tree generated from parsing a config definition file.
* @return a ConfigDefinition object
*/
public static ConfigDefinition createConfigDefinition(CNode root) {
ConfigDefinition def = new ConfigDefinition(root.getName(), root.getVersion(), root.getNamespace());
for (CNode node : root.getChildren()) {
addNode(def, node);
}
return def;
}
/**
*
* @param def a ConfigDefinition object
* @param node the node to be added to the config definition
*/
private static void addNode(ConfigDefinition def, CNode node) {
String name = node.getName();
if (node instanceof LeafCNode) {
if (node.isArray) {
//System.out.println("Adding array node " + name);
String enumValues = null;
String type = ((LeafCNode) node).getType();
if ("enum".equals(type)) {
enumValues = convertToEnumValueCommaSeparated(((LeafCNode.EnumLeaf) node).getLegalValues());
}
def.arrayDef(name).setTypeSpec(
new ConfigDefinition.TypeSpec(name, ((LeafCNode) node).getType(), null, enumValues, null, null));
} else if (node.isMap) {
//System.out.println("Adding leaf map node " + name);
def.leafMapDef(name).setTypeSpec(new ConfigDefinition.TypeSpec(name, ((LeafCNode) node).getType(), null, null, null, null));
} else {
//System.out.println("Adding basic node " + name);
if (node instanceof LeafCNode.IntegerLeaf) {
addNode(def, (LeafCNode.IntegerLeaf) node);
} else if (node instanceof LeafCNode.LongLeaf) {
addNode(def, (LeafCNode.LongLeaf) node);
} else if (node instanceof LeafCNode.BooleanLeaf) {
addNode(def, (LeafCNode.BooleanLeaf) node);
} else if (node instanceof LeafCNode.DoubleLeaf) {
addNode(def, (LeafCNode.DoubleLeaf) node);
// Need to come before StringLeaf, since it is a subclass of StringLeaf
} else if (node instanceof LeafCNode.ReferenceLeaf) {
addNode(def, (LeafCNode.ReferenceLeaf) node);
} else if (node instanceof LeafCNode.FileLeaf) {
addNode(def, (LeafCNode.FileLeaf) node);
} else if (node instanceof LeafCNode.PathLeaf) {
addNode(def, (LeafCNode.PathLeaf) node);
} else if (node instanceof LeafCNode.UrlLeaf) {
addNode(def, (LeafCNode.UrlLeaf) node);
} else if (node instanceof LeafCNode.StringLeaf) {
addNode(def, (LeafCNode.StringLeaf) node);
} else if (node instanceof LeafCNode.EnumLeaf) {
addNode(def, (LeafCNode.EnumLeaf) node);
} else {
System.err.println("Unknown node type for node with name " + name);
}
}
} else {
ConfigDefinition newDef;
if (node.isArray) {
if (node.getChildren() != null && node.getChildren().length > 0) {
//System.out.println("\tAdding inner array node " + name);
newDef = def.innerArrayDef(name);
for (CNode childNode : node.getChildren()) {
//System.out.println("\tChild node " + childNode.getName());
addNode(newDef, childNode);
}
}
} else if (node.isMap) {
//System.out.println("Adding struct map node " + name);
newDef = def.structMapDef(name);
if (node.getChildren() != null && node.getChildren().length > 0) {
for (CNode childNode : node.getChildren()) {
//System.out.println("\tChild node " + childNode.getName());
addNode(newDef, childNode);
}
}
} else {
//System.out.println("Adding struct node " + name);
newDef = def.structDef(name);
if (node.getChildren() != null && node.getChildren().length > 0) {
for (CNode childNode : node.getChildren()) {
//System.out.println("\tChild node " + childNode.getName());
addNode(newDef, childNode);
}
}
}
}
}
static void addNode(ConfigDefinition def, LeafCNode.IntegerLeaf leaf) {
if (leaf.getDefaultValue() != null) {
def.addIntDef(leaf.getName(), Integer.valueOf(leaf.getDefaultValue().getValue()));
} else {
def.addIntDef(leaf.getName());
}
}
static void addNode(ConfigDefinition def, LeafCNode.LongLeaf leaf) {
if (leaf.getDefaultValue() != null) {
def.addLongDef(leaf.getName(), Long.valueOf(leaf.getDefaultValue().getValue()));
} else {
def.addLongDef(leaf.getName());
}
}
static void addNode(ConfigDefinition def, LeafCNode.BooleanLeaf leaf) {
if (leaf.getDefaultValue() != null) {
def.addBoolDef(leaf.getName(), Boolean.valueOf(leaf.getDefaultValue().getValue()));
} else {
def.addBoolDef(leaf.getName());
}
}
static void addNode(ConfigDefinition def, LeafCNode.DoubleLeaf leaf) {
if (leaf.getDefaultValue() != null) {
def.addDoubleDef(leaf.getName(), Double.valueOf(leaf.getDefaultValue().getValue()));
} else {
def.addDoubleDef(leaf.getName());
}
}
static void addNode(ConfigDefinition def, LeafCNode.StringLeaf leaf) {
if (leaf.getDefaultValue() != null) {
def.addStringDef(leaf.getName(), leaf.getDefaultValue().getValue());
} else {
def.addStringDef(leaf.getName());
}
}
static void addNode(ConfigDefinition def, LeafCNode.ReferenceLeaf leaf) {
if (leaf.getDefaultValue() != null) {
def.addReferenceDef(leaf.getName(), leaf.getDefaultValue().getValue());
} else {
def.addReferenceDef(leaf.getName(), null);
}
}
static void addNode(ConfigDefinition def, LeafCNode.FileLeaf leaf) {
if (leaf.getDefaultValue() != null) {
def.addFileDef(leaf.getName(), leaf.getDefaultValue().getValue());
} else {
def.addFileDef(leaf.getName(), null);
}
}
static void addNode(ConfigDefinition def, LeafCNode.PathLeaf leaf) {
if (leaf.getDefaultValue() != null) {
def.addPathDef(leaf.getName(), leaf.getDefaultValue().getValue());
} else {
def.addPathDef(leaf.getName(), null);
}
}
static void addNode(ConfigDefinition def, LeafCNode.UrlLeaf leaf) {
if (leaf.getDefaultValue() != null) {
def.addUrlDef(leaf.getName(), leaf.getDefaultValue().getValue());
} else {
def.addUrlDef(leaf.getName(), null);
}
}
static void addNode(ConfigDefinition def, LeafCNode.EnumLeaf leaf) {
if (leaf.getDefaultValue() != null) {
def.addEnumDef(leaf.getName(), Arrays.asList(leaf.getLegalValues()), leaf.getDefaultValue().getValue());
} else {
def.addEnumDef(leaf.getName(), Arrays.asList(leaf.getLegalValues()), null);
}
}
static String convertToEnumValueCommaSeparated(String[] enumValues) {
StringBuilder sb = new StringBuilder();
for (String s : enumValues) {
sb.append(s);
sb.append(", ");
}
int length = sb.length();
sb.delete(length - 2, length);
return sb.toString();
}
}
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