When building ballerinax/stripe package ClassTooLargeException stacktrace is printed into the console

[ayeshLK]

Description:

$subject

When executing the gradle build for ballerinax/stripe [1] package ClassTooLargeException stacktrace is printed into the console. But, the build passes successfully. Following is the printed stacktrace:

java.lang.instrument.IllegalClassFormatException: Error while instrumenting ballerinax/stripe/2/types with JaCoCo 0.8.10.202304240956/8ea9668.
        at org.jacoco.agent.rt.internal_4a7f17c.CoverageTransformer.transform(CoverageTransformer.java:94)
        at java.instrument/java.lang.instrument.ClassFileTransformer.transform(ClassFileTransformer.java:244)
        at java.instrument/sun.instrument.TransformerManager.transform(TransformerManager.java:188)
        at java.instrument/sun.instrument.InstrumentationImpl.transform(InstrumentationImpl.java:541)
        at java.base/java.lang.ClassLoader.defineClass1(Native Method)
        at java.base/java.lang.ClassLoader.defineClass(ClassLoader.java:1012)
        at java.base/java.security.SecureClassLoader.defineClass(SecureClassLoader.java:150)
        at java.base/java.net.URLClassLoader.defineClass(URLClassLoader.java:524)
        at java.base/java.net.URLClassLoader$1.run(URLClassLoader.java:427)
        at java.base/java.net.URLClassLoader$1.run(URLClassLoader.java:421)
        at java.base/java.security.AccessController.doPrivileged(AccessController.java:712)
        at java.base/java.net.URLClassLoader.findClass(URLClassLoader.java:420)
        at java.base/java.lang.ClassLoader.loadClass(ClassLoader.java:587)
        at java.base/java.lang.ClassLoader.loadClass(ClassLoader.java:520)
        at ballerinax.stripe.2.stripe$1.$gen$ballerinax&0047stripe&00582&00460&00460&0046&0060init&006211(stripe$1:41)
        at ballerinax.stripe.2.stripe$1.$gen$ballerinax&0047stripe&00582&00460&00460&0046&0060init&006210(stripe$1:48)
        at ballerinax.stripe.2.stripe$1.$gen$ballerinax&0047stripe&00582&00460&00460&0046&0060init&00629(stripe$1:96)
        at ballerinax.stripe.2.stripe$1.$gen$ballerinax&0047stripe&00582&00460&00460&0046&0060init&00628(stripe$1:648)
        at ballerinax.stripe.2.stripe$1.$gen$ballerinax&0047stripe&00582&00460&00460&0046&0060init&00627(stripe$1:1275)
        at ballerinax.stripe.2.stripe$1.$gen$ballerinax&0047stripe&00582&00460&00460&0046&0060init&00626(stripe$1:1892)
        at ballerinax.stripe.2.stripe$1.$gen$ballerinax&0047stripe&00582&00460&00460&0046&0060init&00625(stripe$1:2509)
        at ballerinax.stripe.2.stripe$1.$gen$ballerinax&0047stripe&00582&00460&00460&0046&0060init&00624(stripe$1:3118)
        at ballerinax.stripe.2.stripe$1.$gen$ballerinax&0047stripe&00582&00460&00460&0046&0060init&00623(stripe$1:3787)
        at ballerinax.stripe.2.stripe$1.$gen$ballerinax&0047stripe&00582&00460&00460&0046&0060init&00622(stripe$1:4512)
        at ballerinax.stripe.2.stripe$1.$gen$ballerinax&0047stripe&00582&00460&00460&0046&0060init&00621(stripe$1:5286)
        at ballerinax.stripe.2.stripe$1.$gen$ballerinax&0047stripe&00582&00460&00460&0046&0060init&00620(stripe$1:6001)
        at ballerinax.stripe.2.$_init.$gen$&0046&0060init&0062(stripe:0)
        at ballerinax.stripe$test.2.$_init.$moduleInit(stripe)
        at ballerinax.stripe$test.2.$_init.$moduleExecute(stripe)
        at ballerinax.stripe$test.2.$_init.$lambda$$moduleExecute$(stripe)
        at io.ballerina.runtime.internal.scheduling.SchedulerItem.execute(SchedulerItem.java:54)
        at io.ballerina.runtime.internal.scheduling.Scheduler.run(Scheduler.java:320)
        at io.ballerina.runtime.internal.scheduling.Scheduler.runSafely(Scheduler.java:287)
        at java.base/java.lang.Thread.run(Thread.java:833)
Caused by: java.io.IOException: Error while instrumenting ballerinax/stripe/2/types with JaCoCo 0.8.10.202304240956/8ea9668.
        at org.jacoco.agent.rt.internal_4a7f17c.core.instr.Instrumenter.instrumentError(Instrumenter.java:161)
        at org.jacoco.agent.rt.internal_4a7f17c.core.instr.Instrumenter.instrument(Instrumenter.java:111)
        at org.jacoco.agent.rt.internal_4a7f17c.CoverageTransformer.transform(CoverageTransformer.java:92)
        ... 33 more
Caused by: org.jacoco.agent.rt.internal_4a7f17c.asm.ClassTooLargeException: Class too large: ballerinax/stripe/2/types
        at org.jacoco.agent.rt.internal_4a7f17c.asm.ClassWriter.toByteArray(ClassWriter.java:621)
        at org.jacoco.agent.rt.internal_4a7f17c.core.instr.Instrumenter.instrument(Instrumenter.java:92)
        at org.jacoco.agent.rt.internal_4a7f17c.core.instr.Instrumenter.instrument(Instrumenter.java:109)
        ... 34 more

[warunalakshitha]

This is due to large number of type definitions in types.bal file. JVM has a limitation for number strings and methods in one class file. Since each bal file with have separate class, too many code will result in class too large.

We can split the type definitions to two or more bal files to fix this.