refactor(scanoss): Replace direct API calls with SCANOSS SDK

Replace custom direct API calls to SCANOSS with the official Java SDK.
This change improves maintainability by leveraging the SDK's functionality
instead of maintaining custom implementation for API interactions.

Signed-off-by: Agustin Isasmendi <agustin.isasmendi@scanoss.com>

Author: isasmendiagus

plugins/scanners/scanoss/src/main/kotlin/ScanOss.kt

@@ -19,16 +19,13 @@
 
 package org.ossreviewtoolkit.plugins.scanners.scanoss
 
-import com.scanoss.Winnowing
-import com.scanoss.rest.ScanApi
+import com.scanoss.Scanner
 import com.scanoss.utils.JsonUtils
 import com.scanoss.utils.PackageDetails
 
 import java.io.File
 import java.time.Instant
 
-import org.apache.logging.log4j.kotlin.logger
-
 import org.ossreviewtoolkit.model.ScanSummary
 import org.ossreviewtoolkit.plugins.api.OrtPlugin
 import org.ossreviewtoolkit.plugins.api.PluginDescriptor
@@ -37,7 +34,6 @@ import org.ossreviewtoolkit.scanner.ScanContext
 import org.ossreviewtoolkit.scanner.ScannerMatcher
 import org.ossreviewtoolkit.scanner.ScannerMatcherConfig
 import org.ossreviewtoolkit.scanner.ScannerWrapperFactory
-import org.ossreviewtoolkit.utils.common.VCS_DIRECTORIES
 
 @OrtPlugin(
     id = "SCANOSS",
@@ -49,11 +45,10 @@ class ScanOss(
     override val descriptor: PluginDescriptor = ScanOssFactory.descriptor,
     config: ScanOssConfig
 ) : PathScannerWrapper {
-    private val service = ScanApi.builder()
+    private val scanossBuilder = Scanner.builder()
         // As there is only a single endpoint, the SCANOSS API client expects the path to be part of the API URL.
         .url(config.apiUrl.removeSuffix("/") + "/scan/direct")
         .apiKey(config.apiKey.value)
-        .build()
 
     override val version: String by lazy {
         // TODO: Find out the best / cheapest way to query the SCANOSS server for its version.
@@ -81,30 +76,16 @@ class ScanOss(
     override fun scanPath(path: File, context: ScanContext): ScanSummary {
         val startTime = Instant.now()
 
-        val wfpString = buildString {
-            path.walk()
-                .onEnter { it.name !in VCS_DIRECTORIES }
-                .filterNot { it.isDirectory }
-                .forEach {
-                    logger.info { "Computing fingerprint for file ${it.absolutePath}..." }
-                    append(createWfpForFile(it))
-                }
-        }
-
-        val result = service.scan(
-            wfpString,
-            context.labels["scanOssContext"],
-            context.labels["scanOssId"]?.toIntOrNull() ?: Thread.currentThread().threadId().toInt()
-        )
+        // Build the scanner at function level in case any path-specific settings or filters are needed later.
+        val scanoss = scanossBuilder.build()
 
-        // Replace the anonymized UUIDs by their file paths.
-        val results = JsonUtils.toScanFileResultsFromObject(JsonUtils.toJsonObject(result))
+        val rawResults = when {
+            path.isFile -> listOf(scanoss.scanFile(path.toString()))
+            else -> scanoss.scanFolder(path.toString())
+        }
 
+        val results = JsonUtils.toScanFileResults(rawResults)
         val endTime = Instant.now()
         return generateSummary(startTime, endTime, results)
     }
-
-    internal fun createWfpForFile(file: File): String {
-        return Winnowing.builder().build().wfpForFile(file.path, file.path)
-    }
 }

plugins/scanners/scanoss/src/test/kotlin/ScanOssScannerDirectoryTest.kt

@@ -28,7 +28,6 @@ import io.kotest.matchers.collections.containExactlyInAnyOrder
 import io.kotest.matchers.should
 
 import io.mockk.spyk
-import io.mockk.verify
 
 import java.io.File
 
@@ -77,11 +76,6 @@ class ScanOssScannerDirectoryTest : StringSpec({
             ScanContext(labels = emptyMap(), packageType = PackageType.PACKAGE)
         )
 
-        verify(exactly = 1) {
-            scanner.createWfpForFile(TEST_DIRECTORY_TO_SCAN.resolve("ArchiveUtils.kt"))
-            scanner.createWfpForFile(TEST_DIRECTORY_TO_SCAN.resolve("ScannerFactory.kt"))
-        }
-
         with(summary) {
             licenseFindings should containExactlyInAnyOrder(
                 LicenseFinding(

plugins/scanners/scanoss/src/test/kotlin/ScanOssScannerFileTest.kt

@@ -27,7 +27,6 @@ import io.kotest.matchers.collections.containExactly
 import io.kotest.matchers.should
 
 import io.mockk.spyk
-import io.mockk.verify
 
 import java.io.File
 
@@ -70,10 +69,6 @@ class ScanOssScannerFileTest : StringSpec({
             ScanContext(labels = emptyMap(), packageType = PackageType.PACKAGE)
         )
 
-        verify(exactly = 1) {
-            scanner.createWfpForFile(TEST_FILE_TO_SCAN)
-        }
-
         with(summary) {
             licenseFindings should containExactly(
                 LicenseFinding(