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authorMuthuramalingam, Brinda Santh <bs2796@att.com>2019-01-14 17:08:01 -0500
committerMuthuramalingam, Brinda Santh <bs2796@att.com>2019-01-14 17:08:01 -0500
commita630b5cdb3bab6d80703a4c1843058b11b977fb5 (patch)
treeb27b85a8d231c76f695724266796c3db9a11b330
parent3f215fdd8239c8a32614d84c5b2dab518dbc819c (diff)
Add velocity engine template service
Change-Id: Idde39b587b41328e5a5e2e32ab32c29cd27d4855 Issue-ID: CCSDK-941 Signed-off-by: Muthuramalingam, Brinda Santh <bs2796@att.com>
-rw-r--r--components/core/pom.xml4
-rw-r--r--components/core/src/main/kotlin/org/onap/ccsdk/apps/controllerblueprints/core/service/BluePrintTemplateService.kt94
-rw-r--r--components/core/src/main/kotlin/org/onap/ccsdk/apps/controllerblueprints/core/utils/JacksonUtils.kt14
-rw-r--r--components/core/src/test/kotlin/org/onap/ccsdk/apps/controllerblueprints/core/service/BluePrintTemplateServiceTest.kt35
-rwxr-xr-xcomponents/core/src/test/resources/templates/base-config-data.json36
-rwxr-xr-xcomponents/core/src/test/resources/templates/base-config-template.vtl61
6 files changed, 243 insertions, 1 deletions
diff --git a/components/core/pom.xml b/components/core/pom.xml
index f33146b6..03d46f49 100644
--- a/components/core/pom.xml
+++ b/components/core/pom.xml
@@ -52,6 +52,10 @@
<groupId>org.yaml</groupId>
<artifactId>snakeyaml</artifactId>
</dependency>
+ <dependency>
+ <groupId>org.apache.velocity</groupId>
+ <artifactId>velocity</artifactId>
+ </dependency>
<!--Testing dependencies-->
<dependency>
<groupId>org.jetbrains.kotlin</groupId>
diff --git a/components/core/src/main/kotlin/org/onap/ccsdk/apps/controllerblueprints/core/service/BluePrintTemplateService.kt b/components/core/src/main/kotlin/org/onap/ccsdk/apps/controllerblueprints/core/service/BluePrintTemplateService.kt
new file mode 100644
index 00000000..d175fdde
--- /dev/null
+++ b/components/core/src/main/kotlin/org/onap/ccsdk/apps/controllerblueprints/core/service/BluePrintTemplateService.kt
@@ -0,0 +1,94 @@
+/*
+ * Copyright © 2017-2018 AT&T Intellectual Property.
+ *
+ * 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.apps.controllerblueprints.core.service
+
+import com.fasterxml.jackson.core.io.CharTypes
+import com.fasterxml.jackson.databind.JsonNode
+import com.fasterxml.jackson.databind.ObjectMapper
+import com.fasterxml.jackson.databind.node.JsonNodeFactory
+import com.fasterxml.jackson.databind.node.TextNode
+import org.apache.commons.lang3.BooleanUtils
+import org.apache.commons.lang3.StringUtils
+import org.apache.velocity.VelocityContext
+import org.apache.velocity.app.Velocity
+import org.onap.ccsdk.apps.controllerblueprints.core.BluePrintProcessorException
+import org.onap.ccsdk.apps.controllerblueprints.core.utils.JacksonUtils
+import java.io.StringWriter
+
+open class BluePrintTemplateService {
+
+ companion object {
+
+ /**
+ * Generate Content from Velocity Template and JSON Content.
+ */
+ fun generateContent(template: String, json: String,
+ ignoreJsonNull: Boolean = false,
+ additionalContext: MutableMap<String, Any> = hashMapOf()): String {
+ Velocity.init()
+ val mapper = ObjectMapper()
+ val nodeFactory = BluePrintJsonNodeFactory()
+ mapper.setNodeFactory(nodeFactory)
+
+ val jsonNode = mapper.readValue<JsonNode>(json, JsonNode::class.java)
+ ?: throw BluePrintProcessorException("couldn't get json node from json")
+
+ if (ignoreJsonNull)
+ JacksonUtils.removeJsonNullNode(jsonNode)
+
+ val velocityContext = VelocityContext()
+ velocityContext.put("StringUtils", StringUtils::class.java)
+ velocityContext.put("BooleanUtils", BooleanUtils::class.java)
+ /**
+ * Add the Custom Velocity Context API
+ */
+ additionalContext.forEach { name, value -> velocityContext.put(name, value) }
+ /**
+ * Add the JSON Data to the context
+ */
+ jsonNode.fields().forEach { entry ->
+ velocityContext.put(entry.key, entry.value)
+ }
+
+ val stringWriter = StringWriter()
+ Velocity.evaluate(velocityContext, stringWriter, "TemplateData", template)
+ stringWriter.flush()
+ return stringWriter.toString()
+ }
+ }
+}
+
+/**
+ * Customise JsonNodeFactory adn TextNode, Since it introduces quotes for string data.
+ */
+open class BluePrintJsonNodeFactory : JsonNodeFactory() {
+ override fun textNode(text: String): TextNode {
+ return BluePrintTextNode(text)
+ }
+}
+
+open class BluePrintTextNode(v: String) : TextNode(v) {
+ override fun toString(): String {
+ var len = this._value.length
+ len = len + 2 + (len shr 4)
+ val sb = StringBuilder(len)
+ CharTypes.appendQuoted(sb, this._value)
+ return sb.toString()
+ }
+
+}
+
diff --git a/components/core/src/main/kotlin/org/onap/ccsdk/apps/controllerblueprints/core/utils/JacksonUtils.kt b/components/core/src/main/kotlin/org/onap/ccsdk/apps/controllerblueprints/core/utils/JacksonUtils.kt
index 58a82079..6321a838 100644
--- a/components/core/src/main/kotlin/org/onap/ccsdk/apps/controllerblueprints/core/utils/JacksonUtils.kt
+++ b/components/core/src/main/kotlin/org/onap/ccsdk/apps/controllerblueprints/core/utils/JacksonUtils.kt
@@ -21,10 +21,10 @@ import com.att.eelf.configuration.EELFManager
import com.fasterxml.jackson.annotation.JsonInclude
import com.fasterxml.jackson.core.type.TypeReference
import com.fasterxml.jackson.databind.JsonNode
+import com.fasterxml.jackson.databind.SerializationFeature
import com.fasterxml.jackson.databind.node.ArrayNode
import com.fasterxml.jackson.databind.node.NullNode
import com.fasterxml.jackson.databind.node.ObjectNode
-import com.fasterxml.jackson.databind.SerializationFeature
import com.fasterxml.jackson.module.kotlin.jacksonObjectMapper
import kotlinx.coroutines.Dispatchers
import kotlinx.coroutines.async
@@ -56,6 +56,18 @@ class JacksonUtils {
return jacksonObjectMapper().treeToValue(node, valueType)
}
+ fun removeJsonNullNode(node: JsonNode) {
+ val it = node.iterator()
+ while (it.hasNext()) {
+ val child = it.next()
+ if (child.isNull) {
+ it.remove()
+ } else {
+ removeJsonNullNode(child)
+ }
+ }
+ }
+
fun getContent(fileName: String): String = runBlocking {
async {
try {
diff --git a/components/core/src/test/kotlin/org/onap/ccsdk/apps/controllerblueprints/core/service/BluePrintTemplateServiceTest.kt b/components/core/src/test/kotlin/org/onap/ccsdk/apps/controllerblueprints/core/service/BluePrintTemplateServiceTest.kt
new file mode 100644
index 00000000..663a3751
--- /dev/null
+++ b/components/core/src/test/kotlin/org/onap/ccsdk/apps/controllerblueprints/core/service/BluePrintTemplateServiceTest.kt
@@ -0,0 +1,35 @@
+/*
+ * Copyright © 2017-2018 AT&T Intellectual Property.
+ *
+ * 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.apps.controllerblueprints.core.service
+
+import org.junit.Test
+import org.onap.ccsdk.apps.controllerblueprints.core.utils.JacksonUtils
+import kotlin.test.assertNotNull
+
+class BluePrintTemplateServiceTest {
+
+ @Test
+ fun testGenerateContent() {
+
+ val template = JacksonUtils.getClassPathFileContent("templates/base-config-template.vtl")
+ val json = JacksonUtils.getClassPathFileContent("templates/base-config-data.json")
+
+ val content = BluePrintTemplateService.generateContent(template, json)
+ assertNotNull(content, "failed to generate content for velocity template")
+
+ }
+} \ No newline at end of file
diff --git a/components/core/src/test/resources/templates/base-config-data.json b/components/core/src/test/resources/templates/base-config-data.json
new file mode 100755
index 00000000..2acc6fcd
--- /dev/null
+++ b/components/core/src/test/resources/templates/base-config-data.json
@@ -0,0 +1,36 @@
+{
+ "node0_hostname": "sdnc-host",
+ "node0_backup_router_address": "2001:1890:1253::192:168:100:1",
+ "servers": [
+ "Server1",
+ "Server2",
+ "Server3"
+ ],
+ "tacplus-servers": [
+ {
+ "tacplus-server-name": "tacplus-server-name1",
+ "tacplus-server-source-address": "enc-dsdsasa1"
+ },
+ {
+ "tacplus-server-name": "tacplus-server-name2",
+ "tacplus-server-source-address": "enc-dsdsasa2"
+ }
+ ],
+ "classes": [
+ {
+ "name": "superuser-class",
+ "idle-timeout": 5,
+ "permissions": "all"
+ },
+ {
+ "name": "tacacs-adv-class",
+ "idle-timeout": 5
+ },
+ {
+ "name": "tacacs-base-class",
+ "idle-timeout": 5
+ }
+ ],
+ "system-password": "teamops-system-password",
+ "root-password": "teamops-root-password"
+}
diff --git a/components/core/src/test/resources/templates/base-config-template.vtl b/components/core/src/test/resources/templates/base-config-template.vtl
new file mode 100755
index 00000000..f7b1269b
--- /dev/null
+++ b/components/core/src/test/resources/templates/base-config-template.vtl
@@ -0,0 +1,61 @@
+<configuration xmlns="http://xml.juniper.net/xnm/1.1/xnm"
+xmlns:a="http://xml.juniper.net/junos/15.1X49/junos">
+ <version>15.1X49-D50.3</version>
+ <groups>
+ <name>node0</name>
+ <system>
+ #foreach($server in ${servers})
+ <server-host-name>$StringUtils.upperCase("$server")</server-host-name>
+ #end
+ </system>
+ <system>
+ <host-name>${node0_hostname}</host-name>
+ <backup-router>
+ <address>${node0_backup_router_address}</address>
+ <destination>$node0_backup_router_address</destination>
+ </backup-router>
+ #foreach($tacplus-server in ${tacplus-servers})
+ <tacplus-server>
+ <name>$tacplus-server.tacplus-server-name</name>
+ <source-address>$tacplus-server.tacplus-server-source-address</source-address>
+ </tacplus-server>
+ #end
+ <login>
+ <message>ONAP information assets</message>
+ #foreach($class in ${classes})
+ <class>
+ <name>$class.name</name>
+ <idle-timeout>$class.idle-timeout</idle-timeout>
+ #if ($class.permissions)
+ <permissions>$class.permissions</permissions>
+ #end
+ </class>
+ #end
+ <user>
+ <name>readonly</name>
+ <full-name>Read Only Account Access</full-name>
+ <uid>1001</uid>
+ <class>tacacs-base-class</class>
+ </user>
+ <user>
+ <name>readwrite</name>
+ <full-name>Read - Write Account Access</full-name>
+ <uid>1002</uid>
+ <class>tacacs-adv-class</class>
+ <authentication>
+ <encrypted-password>${system-password}</encrypted-password>
+ </authentication>
+ </user>
+ <user>
+ <name>readwrite</name>
+ <full-name>Emergency Access Only</full-name>
+ <uid>1000</uid>
+ <class>superuser-class</class>
+ <authentication>
+ <encrypted-password>${root-password}</encrypted-password>
+ </authentication>
+ </user>
+ </login>
+ </system>
+ </groups>
+</configuration> \ No newline at end of file