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20 changes: 20 additions & 0 deletions
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src/main/kotlin/com/exactpro/th2/common/schema/configuration/IConfigurationProvider.kt
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,20 @@ | ||
| /* | ||
| * Copyright 2023 Exactpro (Exactpro Systems Limited) | ||
| * 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. | ||
| */ | ||
|
|
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| package com.exactpro.th2.common.schema.configuration | ||
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| interface IConfigurationProvider { | ||
| fun <T : Any> load(configClass: Class<T>, alias: String, default: () -> T): T | ||
| } |
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...ain/kotlin/com/exactpro/th2/common/schema/configuration/impl/JsonConfigurationProvider.kt
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| Original file line number | Diff line number | Diff line change |
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| @@ -0,0 +1,90 @@ | ||
| /* | ||
| * Copyright 2023 Exactpro (Exactpro Systems Limited) | ||
| * 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. | ||
| */ | ||
|
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| package com.exactpro.th2.common.schema.configuration.impl | ||
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| import com.exactpro.th2.common.schema.configuration.IConfigurationProvider | ||
| import com.exactpro.th2.common.schema.strategy.route.json.RoutingStrategyModule | ||
| import com.fasterxml.jackson.databind.ObjectMapper | ||
| import com.fasterxml.jackson.datatype.jsr310.JavaTimeModule | ||
| import com.fasterxml.jackson.module.kotlin.KotlinFeature | ||
| import com.fasterxml.jackson.module.kotlin.KotlinModule | ||
| import mu.KotlinLogging | ||
| import org.apache.commons.text.StringSubstitutor | ||
| import java.nio.file.Files | ||
| import java.nio.file.Path | ||
| import java.util.concurrent.ConcurrentHashMap | ||
| import kotlin.io.path.exists | ||
| import kotlin.io.path.isDirectory | ||
|
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| class JsonConfigurationProvider( | ||
| private val baseDir: Path | ||
| ) : IConfigurationProvider { | ||
|
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| init { | ||
| require(baseDir.isDirectory()) { | ||
| "The '$baseDir' base directory doesn't exist or isn't directory" | ||
| } | ||
| } | ||
|
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| private val cache = ConcurrentHashMap<String, Any>() | ||
|
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| @Suppress("UNCHECKED_CAST") | ||
| override fun <T : Any> load(configClass: Class<T>, alias: String, default: () -> T): T = | ||
| cache.computeIfAbsent(alias) { | ||
| val configPath = baseDir.resolve("${alias}.${EXTENSION}") | ||
| if (!configPath.exists()) { | ||
| K_LOGGER.debug { "'$configPath' file related to the '$alias' config alias doesn't exist" } | ||
| return@computeIfAbsent default() | ||
| } | ||
|
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| val sourceContent = String(Files.readAllBytes(configPath)) | ||
| K_LOGGER.info { "'$configPath' file related to the '$alias' config alias has source content $sourceContent" } | ||
| val content = SUBSTITUTOR.get().replace(sourceContent) | ||
| requireNotNull(MAPPER.readValue(content, configClass)) { | ||
| "Parsed format of the '$alias' config alias content can't be null" | ||
| } | ||
| }.also { value -> | ||
| check(configClass.isInstance(value)) { | ||
| "Stored configuration instance of $alias config alias mismatches, " + | ||
| "expected: ${configClass.canonicalName}, actual: ${value::class.java.canonicalName}" | ||
| } | ||
| } as T | ||
|
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| companion object { | ||
| private const val EXTENSION = "json" | ||
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| private val K_LOGGER = KotlinLogging.logger {} | ||
| private val SUBSTITUTOR: ThreadLocal<StringSubstitutor> = object : ThreadLocal<StringSubstitutor>() { | ||
| override fun initialValue(): StringSubstitutor = StringSubstitutor(System.getenv()) | ||
| } | ||
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| @JvmField | ||
| val MAPPER = ObjectMapper().apply { | ||
| registerModules( | ||
| KotlinModule.Builder() | ||
| .withReflectionCacheSize(512) | ||
| .configure(KotlinFeature.NullToEmptyCollection, false) | ||
| .configure(KotlinFeature.NullToEmptyMap, false) | ||
| .configure(KotlinFeature.NullIsSameAsDefault, false) | ||
| .configure(KotlinFeature.SingletonSupport, false) | ||
| .configure(KotlinFeature.StrictNullChecks, false) | ||
| .build(), | ||
| RoutingStrategyModule(this), | ||
| JavaTimeModule() | ||
| ) | ||
| } | ||
| } | ||
| } |