exception:groovy.lang.MissingMethodException: No signature of method:

Working on my NetScan script for our Arista AP's still and when trying to execute a http [DELETE] I get the above error when following the Delete documentation here which suggests I can just call the URL and header.

Currently this is just using the collector debug !groovy command

If I then try with blank payload I get a different error: exception:java.lang.NullPointerException

First Error with no payload in call:

exception:groovy.lang.MissingMethodException: No signature of method: com.santaba.agent.groovyapi.http.Client.delete() is applicable for argument types: (java.lang.String, java.util.LinkedHashMap) values: [https://awm14001-c4.srv.wifi.arista.com/wifi/api/session, [Content-Type:application/json, ...]]
Possible solutions: delete(java.lang.String, java.lang.String, java.util.Map), release(), release(), close(), every(), get(java.lang.String)
java.lang.RuntimeException: groovy.lang.MissingMethodException: No signature of method: com.santaba.agent.groovyapi.http.Client.delete() is applicable for argument types: (java.lang.String, java.util.LinkedHashMap) values: [https://awm14001-c4.srv.wifi.arista.com/wifi/api/session, [Content-Type:application/json, ...]]
Possible solutions: delete(java.lang.String, java.lang.String, java.util.Map), release(), release(), close(), every(), get(java.lang.String)
	at com.logicmonitor.groovy.objects.BaseWrapper.invoke(BaseWrapper.java:124)
	at com.logicmonitor.groovy.objects.lang.ScriptWrapper.run(ScriptWrapper.java:31)
	at com.santaba.agent.groovy.executor.GroovyScriptShell.execute(GroovyScriptShell.java:71)
	at com.santaba.agent.util.GroovyScriptExecutor.execute(GroovyScriptExecutor.java:148)
	at com.santaba.agent.debugger.GroovyTask._executeInAgent(GroovyTask.java:210)
	at com.santaba.agent.debugger.GroovyTask._handle(GroovyTask.java:189)
	at com.santaba.agent.debugger.DebugTask.run(DebugTask.java:176)
	at java.base/java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1128)
	at java.base/java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:628)
	at java.base/java.lang.Thread.run(Thread.java:829)
Caused by: groovy.lang.MissingMethodException: No signature of method: com.santaba.agent.groovyapi.http.Client.delete() is applicable for argument types: (java.lang.String, java.util.LinkedHashMap) values: [https://awm14001-c4.srv.wifi.arista.com/wifi/api/session, [Content-Type:application/json, ...]]
Possible solutions: delete(java.lang.String, java.lang.String, java.util.Map), release(), release(), close(), every(), get(java.lang.String)
	at org.codehaus.groovy.runtime.ScriptBytecodeAdapter.unwrap(ScriptBytecodeAdapter.java:71)
	at org.codehaus.groovy.runtime.callsite.PojoMetaClassSite.call(PojoMetaClassSite.java:48)
	at org.codehaus.groovy.runtime.callsite.CallSiteArray.defaultCall(CallSiteArray.java:47)
	at org.codehaus.groovy.runtime.callsite.AbstractCallSite.call(AbstractCallSite.java:116)
	at org.codehaus.groovy.runtime.callsite.AbstractCallSite.call(AbstractCallSite.java:136)
	at Script85.run(Script85.groovy:76)
	at jdk.internal.reflect.GeneratedMethodAccessor68.invoke(Unknown Source)
	at java.base/jdk.internal.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
	at java.base/java.lang.reflect.Method.invoke(Method.java:566)
	at com.logicmonitor.groovy.objects.BaseWrapper.invoke(BaseWrapper.java:118)
	... 9 more

Second Error with Blank Payload:

exception:java.lang.NullPointerException
java.lang.RuntimeException: java.lang.NullPointerException
	at com.logicmonitor.groovy.objects.BaseWrapper.invoke(BaseWrapper.java:124)
	at com.logicmonitor.groovy.objects.lang.ScriptWrapper.run(ScriptWrapper.java:31)
	at com.santaba.agent.groovy.executor.GroovyScriptShell.execute(GroovyScriptShell.java:71)
	at com.santaba.agent.util.GroovyScriptExecutor.execute(GroovyScriptExecutor.java:148)
	at com.santaba.agent.debugger.GroovyTask._executeInAgent(GroovyTask.java:210)
	at com.santaba.agent.debugger.GroovyTask._handle(GroovyTask.java:189)
	at com.santaba.agent.debugger.DebugTask.run(DebugTask.java:176)
	at java.base/java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1128)
	at java.base/java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:628)
	at java.base/java.lang.Thread.run(Thread.java:829)
Caused by: java.lang.NullPointerException
	at com.santaba.agent.groovyapi.http.Client._processResponse(Client.java:580)
	at com.santaba.agent.groovyapi.http.Client.request(Client.java:429)
	at com.santaba.agent.groovyapi.http.Client.delete(Client.java:409)
	at com.santaba.agent.groovyapi.http.Client$delete$4.call(Unknown Source)
	at org.codehaus.groovy.runtime.callsite.CallSiteArray.defaultCall(CallSiteArray.java:47)
	at org.codehaus.groovy.runtime.callsite.AbstractCallSite.call(AbstractCallSite.java:116)
	at org.codehaus.groovy.runtime.callsite.AbstractCallSite.call(AbstractCallSite.java:144)
	at Script91.run(Script91.groovy:76)
	at jdk.internal.reflect.GeneratedMethodAccessor68.invoke(Unknown Source)
	at java.base/jdk.internal.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
	at java.base/java.lang.reflect.Method.invoke(Method.java:566)
	at com.logicmonitor.groovy.objects.BaseWrapper.invoke(BaseWrapper.java:118)
	... 9 more

The Code:

/*******************************************************************************
*  Arista WIFI Integration with CUE for discovery of the AP's
 ******************************************************************************/

import com.santaba.agent.groovyapi.http.*
import com.santaba.agent.groovy.utils.GroovyScriptHelper as GSH
import com.logicmonitor.mod.Snippets
import com.santaba.agent.AgentVersion
import java.text.DecimalFormat
import groovy.json.JsonOutput
import groovy.json.JsonSlurper

// To run in debug mode, set to true
Boolean debug = false
// To enable logging, set to true
Boolean log = false

// Set props object based on whether or not we are running inside a netscan or debug console
def props
try {
    hostProps.get("system.hostname")
    props = hostProps
    debug = true  // set debug to true so that we can ensure we do not print sensitive properties
}
catch (MissingPropertyException) {
    props = netscanProps
}

//String key = props.get("AristaWIFI.api.key")
//String token = props.get("AristaWIFI.api.token")
//String clientId = props.get("AristaWIFI.api.clientId")
String key = [REMOVED]
String token = [REMOVED]
String clientId = "logicmonitor"
//if (!key) {
//    throw new Exception("Must provide AristaWIFI.api.key to run this script.  Verify necessary credentials have been provided in Netscan properties.")
//}
//if (!token) {
//    throw new Exception("Must provide AristaWIFI.api.token credentials to run this script.  Verify necessary credentials have been provided in Netscan properties.")
//}
//if (!clientId) {
//    throw new Exception("Must provide AristaWIFI.api.clientId credentials to run this script.  Verify necessary credentials have been provided in Netscan properties.")
//}
//def logCacheContext = "${org}::arista-wifi-cloud"
//Boolean skipDeviceDedupe = props.get("skip.device.dedupe", "false").toBoolean()
//String hostnameSource    = props.get("hostname.source", "")?.toLowerCase()?.trim()

Integer collectorVersion = AgentVersion.AGENT_VERSION.toInteger()
 
// Bail out early if we don't have the correct minimum collector version to ensure netscan runs properly
if (collectorVersion < 32400) {
    def formattedVer = new DecimalFormat("00.000").format(collectorVersion / 1000)
    throw new Exception("Upgrade collector running netscan to 32.400 or higher to run full featured enhanced netscan. Currently running version ${formattedVer}.")
}
externalHost= "awm14001-c4.srv.wifi.arista.com";

httpClient = HTTP.open(externalHost,443);
httpClient.setHTTPProxy('proxy.iggroup.local',8080);
// Log in to arista
loginurl = "https://awm14001-c4.srv.wifi.arista.com/wifi/api/session"

payloadstring = '{"type":"apiKeycredentials","keyId":"'+key+'","keyValue":"'+token+'","timeout":3600,"clientIdentifier": "'+clientId+'"}';


def payload = payloadstring;
println payload;
def loginResponse = httpClient.post(loginurl,payload,["Content-Type":"application/json"]);
if ( !(httpClient.getStatusCode() =~ /20/) )
{
    // Error has occured
    println "Authentication Failure";
    println httpClient.getStatusCode();
    println loginResponse;
    return(1);
}

String RawCookie = httpClient.getHeader("Set-Cookie")
//Have Kept but as yet not needed will remove if not needed..
String httpResponseBody = httpClient.getResponseBody()
//Retrieve the Cookie to use from the header.
AristaCookie = RawCookie.split(';')[0]
println httpClient.getStatusCode()
String cookieString = '"'+AristaCookie+'"'
def logoutheaders = ["Content-Type":"application/json","Cookie":cookieString]
//println logoutheaders
def logoutResponse = httpClient.delete(loginurl,logoutheaders) <- With No payload
def logoutResponse = httpClient.delete(loginurl,'{}'logoutheaders) <- With blank payload I have just tried "" as the payload as well.
logoutResult = httpClient.getStatusCode()
if ( !(httpClient.getStatusCode() =~ /20/) )
{
    //Error has occured
    println "Logout Failure";
    println httpClient.getStatusCode();
    println loginResponse;
    return(1);
}


println AristaCookie;
println httpResponseBody;
println logoutResponse;




def LMDebugPrint(message) {
    if (debug) {
        println(message.toString())
    }
}

The Same URL and the same header with no payload works if I work in python obviously appreciate they are different languages, just confirming that the formatting is correct.

SteveBamford

Posted 1 year ago·Last reply 1 year ago

4 comments

SteveBamford

OP1 year ago

Further to this, as I now have NetScan script running externally, I am now on the discovery and collector scripts so need to revisit this, as such I have looked at the client documentation and tried to build the correct response.

def logoutResponse = httpClient.delete(loginurl,cookieString,logoutheaders)
logoutResult = httpClient.getStatusCode()
if ( !(httpClient.getStatusCode() =~ /20/) )
{
    //Error has occured
    println "Logout Failure";
    println httpClient.getStatusCode();
    println loginResponse;
    return(1);
}

I now get
exception:java.lang.NullPointerException
java.lang.RuntimeException: java.lang.NullPointerException
at com.logicmonitor.groovy.objects.BaseWrapper.invoke(BaseWrapper.java:124)
at com.logicmonitor.groovy.objects.lang.ScriptWrapper.run(ScriptWrapper.java:31)
at com.santaba.agent.groovy.executor.GroovyScriptShell.execute(GroovyScriptShell.java:71)
at com.santaba.agent.util.GroovyScriptExecutor.execute(GroovyScriptExecutor.java:148)
at com.santaba.agent.debugger.GroovyTask._executeInAgent(GroovyTask.java:210)
at com.santaba.agent.debugger.GroovyTask._handle(GroovyTask.java:189)
at com.santaba.agent.debugger.DebugTask.run(DebugTask.java:176)
at java.base/java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1128)
at java.base/java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:628)
at java.base/java.lang.Thread.run(Thread.java:829)
Caused by: java.lang.NullPointerException
at com.santaba.agent.groovyapi.http.Client._processResponse(Client.java:580)
at com.santaba.agent.groovyapi.http.Client.request(Client.java:429)
at com.santaba.agent.groovyapi.http.Client.delete(Client.java:409)
at com.santaba.agent.groovyapi.http.Client$delete$5.call(Unknown Source)
at org.codehaus.groovy.runtime.callsite.CallSiteArray.defaultCall(CallSiteArray.java:47)
at org.codehaus.groovy.runtime.callsite.AbstractCallSite.call(AbstractCallSite.java:116)
at org.codehaus.groovy.runtime.callsite.AbstractCallSite.call(AbstractCallSite.java:144)
at Script660.run(Script660.groovy:96)
at jdk.internal.reflect.GeneratedMethodAccessor82.invoke(Unknown Source)
at java.base/jdk.internal.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.base/java.lang.reflect.Method.invoke(Method.java:566)
at com.logicmonitor.groovy.objects.BaseWrapper.invoke(BaseWrapper.java:118)
... 9 more

The issue here is that there is no content in the delete as it is the cookie you are deleting, I have a workaround in reducing the time the session is open, however this could end up with multiple sessions open on the end point unnecessarily until they time out.

SteveBamford

OP1 year ago

Just as a side note, I can work around this by reducing the session timeout from an hour to say 10 minutes when logging on which would work.

Justin Rider

·1 year ago

It looks like the http Delete method takes 3 parameters (uri, data, headers):
Client (collector API)

SteveBamford

OP1 year ago

I tried a number of methods, in the end I couldn't get it to work, so gave up and switched over to using Python for the discovery script, and I will utilise groovy for the collection scripts in due course.

1	SUYASH GAIKWAD
2	PJ Pankaj Jain
3	KT Kyle Taylor
4	KV karthikeyan VG
5	ME Mir Ehtesham Ali
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