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/*
* Copyright © 2019 IBM, Bell Canada.
*
* 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 org.onap.ccsdk.cds.controllerblueprints.core.service
import com.fasterxml.jackson.core.type.TypeReference
import com.fasterxml.jackson.databind.JsonNode
import com.fasterxml.jackson.databind.ObjectMapper
import com.hubspot.jinjava.Jinjava
import com.hubspot.jinjava.JinjavaConfig
import com.hubspot.jinjava.interpret.Context
import com.hubspot.jinjava.interpret.InterpreterFactory
import com.hubspot.jinjava.interpret.JinjavaInterpreter
import com.hubspot.jinjava.loader.ResourceLocator
import com.hubspot.jinjava.loader.ResourceNotFoundException
import com.hubspot.jinjava.objects.serialization.PyishObjectMapper
import org.onap.ccsdk.cds.controllerblueprints.core.BluePrintProcessorException
import org.onap.ccsdk.cds.controllerblueprints.core.config.BluePrintLoadConfiguration
import org.onap.ccsdk.cds.controllerblueprints.core.interfaces.BluePrintJsonNodeFactory
import org.onap.ccsdk.cds.controllerblueprints.core.normalizedPathName
import org.onap.ccsdk.cds.controllerblueprints.core.removeNullNode
import java.io.IOException
import java.nio.charset.Charset
import java.nio.file.Files.readAllBytes
import java.nio.file.Paths
import java.util.Objects
object BluePrintJinjaTemplateService {
/**
* To enable inheritance within CBA, we need Jinja runtime to know where to load the templates.
*/
class BlueprintRelatedTemplateLocator(
private val bluePrintLoadConfiguration: BluePrintLoadConfiguration,
private val artifactName: String,
private val artifactVersion: String
) : ResourceLocator {
@Throws(IOException::class)
override fun getString(fullName: String, encoding: Charset, interpreter: JinjavaInterpreter): String {
try {
val deployFile =
normalizedPathName(
bluePrintLoadConfiguration.blueprintDeployPath,
artifactName,
artifactVersion,
fullName
)
return String(readAllBytes(Paths.get(deployFile)))
} catch (var5: IllegalArgumentException) {
throw ResourceNotFoundException("Couldn't find resource: $fullName")
}
}
}
fun generateContent(
template: String,
json: String,
ignoreJsonNull: Boolean,
additionalContext: MutableMap<String, Any>,
bluePrintLoadConfiguration: BluePrintLoadConfiguration,
artifactName: String,
artifactVersion: String
): String {
return generateContent(
template,
json,
ignoreJsonNull,
additionalContext,
BlueprintRelatedTemplateLocator(bluePrintLoadConfiguration, artifactName, artifactVersion)
)
}
fun generateContent(
template: String,
json: String,
ignoreJsonNull: Boolean,
additionalContext: MutableMap<String, Any>,
resourceLocator: ResourceLocator? = null
): String {
// Add the JSON Data to the context
if (json.isNotEmpty()) {
val mapper = ObjectMapper().setNodeFactory(BluePrintJsonNodeFactory())
val jsonNode = mapper.readValue(json, JsonNode::class.java)
?: throw BluePrintProcessorException("couldn't get json node from json")
if (ignoreJsonNull) {
jsonNode.removeNullNode()
}
additionalContext.putAll(mapper.readValue(json, object : TypeReference<Map<String, Any>>() {}))
}
val jinjava = Jinjava(
JinjavaConfig(object : InterpreterFactory {
override fun newInstance(interpreter: JinjavaInterpreter): JinjavaInterpreter {
return CustomJinjavaInterpreter(interpreter)
}
override fun newInstance(jinjava: Jinjava, context: Context, config: JinjavaConfig): JinjavaInterpreter {
return CustomJinjavaInterpreter(jinjava, context, config)
}
})
)
if (resourceLocator != null) {
jinjava.resourceLocator = resourceLocator
}
return jinjava.render(template, additionalContext)
}
class CustomJinjavaInterpreter : JinjavaInterpreter {
constructor(interpreter: JinjavaInterpreter) : super(interpreter)
constructor(jinjava: Jinjava, context: Context, config: JinjavaConfig) : super(jinjava, context, config)
// Overriding actual getAsString method to return `context.currentNode.master.image` instead of empty string
override fun getAsString(`object`: Any?): String {
return if (config.legacyOverrides.isUsePyishObjectMapper)
PyishObjectMapper.getAsUnquotedPyishString(`object`)
else
Objects.toString(`object`, context.currentNode.master.image)
}
}
}
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