Allow to select between in-memory ledger and mongo ledger

dbt-core/src/main/groovy/com/devsoap/dbt/handlers/LedgerUpdateTransactionHandler.groovy

@@ -19,9 +19,9 @@ import com.devsoap.dbt.config.DBTConfig
 import com.devsoap.dbt.data.BlockTransaction
 import com.devsoap.dbt.data.Query
 import com.devsoap.dbt.services.LedgerService
+import com.devsoap.dbt.services.MongoLedgerService
 import com.fasterxml.jackson.databind.ObjectMapper
 import groovy.util.logging.Slf4j
-import ratpack.exec.Promise
 import ratpack.handling.Context
 import ratpack.handling.Handler
 import ratpack.http.HttpMethod

dbt-core/src/main/groovy/com/devsoap/dbt/modules/DBTExecutorModule.groovy

@@ -7,6 +7,8 @@ import com.google.inject.multibindings.Multibinder
 import ratpack.handling.HandlerDecorator
 import ratpack.server.ServerConfig
 
+import javax.sql.DataSource
+
 class DBTExecutorModule extends DBTModule {
 
     @Override
@@ -16,6 +18,8 @@ class DBTExecutorModule extends DBTModule {
         bind(ExecutorChainAction)
         bind(ExecutorHandler)
 
+        requireBinding(DataSource)
+
         Multibinder.newSetBinder(binder(), HandlerDecorator).addBinding()
                 .toInstance(HandlerDecorator.prependHandlers(ExecutorChainAction))
     }

dbt-core/src/main/groovy/com/devsoap/dbt/modules/DBTLedgerModule.groovy

@@ -20,7 +20,8 @@ class DBTLedgerModule extends DBTModule {
         bind(LedgerGetTransactionHandler)
         bind(LedgerListTransactionsHandler)
         bind(LedgerUpdateTransactionHandler)
-        bind(LedgerService)
+
+        requireBinding(LedgerService)
 
         Multibinder.newSetBinder(binder(), HandlerDecorator).addBinding()
                 .toInstance(HandlerDecorator.prependHandlers(LedgerChainAction))

dbt-core/src/main/groovy/com/devsoap/dbt/modules/DBTModule.groovy

@@ -0,0 +1,42 @@
+/*
+ * Copyright 2018 Devsoap Inc.
+ *
+ * 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 com.devsoap.dbt.modules
+
+import com.devsoap.dbt.config.DBTConfig
+import com.devsoap.dbt.handlers.ConfigInfoHandler
+import com.devsoap.dbt.handlers.JsonSchemaHandler
+import com.devsoap.dbt.services.TransactionManagerService
+import com.fasterxml.jackson.databind.ObjectMapper
+import groovy.util.logging.Slf4j
+import ratpack.guice.ConfigurableModule
+import ratpack.server.ServerConfig
+
+@Slf4j
+class DBTModule extends ConfigurableModule<DBTConfig> {
+
+    @Override
+    protected void configure() {
+        bind(ObjectMapper)
+        bind(TransactionManagerService)
+        bind(ConfigInfoHandler)
+        bind(JsonSchemaHandler)
+    }
+
+    @Override
+    protected DBTConfig createConfig(ServerConfig serverConfig) {
+        (DBTConfig) serverConfig.getAsConfigObject('/dbt', DBTConfig)?.getObject() ?: super.createConfig(serverConfig)
+    }
+}

dbt-core/src/main/groovy/com/devsoap/dbt/services/InMemoryLedgerService.groovy

@@ -0,0 +1,61 @@
+/*
+ * Copyright 2018 Devsoap Inc.
+ *
+ * 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 com.devsoap.dbt.services
+
+import com.devsoap.dbt.data.BlockTransaction
+import groovy.util.logging.Slf4j
+import ratpack.exec.Promise
+
+@Slf4j
+class InMemoryLedgerService implements LedgerService {
+
+    private static final LedgerData data = new LedgerData()
+
+    InMemoryLedgerService() {
+        log.warn('Using in-memory ledger service which will not store the ledger between restarts. Please consider ' +
+                'using the Mongo ledger service instead.')
+    }
+
+    @Override
+    Promise<Optional<BlockTransaction>> fetchTransaction(String transactionId) {
+        Promise.value(Optional.ofNullable(data.transactions.find {it.id == transactionId}))
+    }
+
+    @Override
+    Promise<List<BlockTransaction>> allTransactions() {
+        log.info("Found ${data.transactions.size()} transactions")
+        Promise.value(data.transactions)
+    }
+
+    @Override
+    Promise<String> newTransaction(BlockTransaction transaction) {
+        log.info("Adding new transaction $transaction.id")
+        data.transactions.add(transaction)
+        Promise.value(transaction.id)
+    }
+
+    @Override
+    Promise<String> updateTransaction(BlockTransaction transaction) {
+        log.info("Updating transaction $transaction.id")
+        data.transactions.removeAll {it.id == transaction.id}
+        data.transactions.add(transaction)
+        Promise.value(transaction.id)
+    }
+
+    private static class LedgerData {
+        final List<BlockTransaction> transactions = []
+    }
+}

dbt-core/src/main/groovy/com/devsoap/dbt/services/LedgerService.groovy

@@ -15,72 +15,17 @@
  */
 package com.devsoap.dbt.services
 
-import com.devsoap.dbt.config.DBTConfig
 import com.devsoap.dbt.data.BlockTransaction
-import com.fasterxml.jackson.databind.ObjectMapper
-import com.gmongo.GMongo
-import com.mongodb.BasicDBObject
-import com.mongodb.BasicDBObjectBuilder
-import com.mongodb.DB
-import com.mongodb.DBCollection
-import com.mongodb.DBCursor
-import com.mongodb.DBObject
-import com.mongodb.MongoURI
-import com.mongodb.util.JSON
-import groovy.util.logging.Slf4j
 import ratpack.exec.Promise
 import ratpack.service.Service
 
-import javax.inject.Inject
+interface LedgerService extends Service {
 
-@Slf4j
-class LedgerService implements Service {
+    Promise<Optional<BlockTransaction>> fetchTransaction(String transactionId)
 
-    private final String dbUrl
-    private DB db
-    private final ObjectMapper mapper
+    Promise<List<BlockTransaction>> allTransactions()
 
-    @Inject
-    LedgerService(DBTConfig config, ObjectMapper mapper) {
-        dbUrl = config.ledger.databaseUrl
-        this.mapper = mapper
-    }
-
-    Promise<Optional<BlockTransaction>> fetchTransaction(String transactionId) {
-        BlockTransaction transaction = transactions.findOne(['id':transactionId])?.findAll { it.key != '_id' } as BlockTransaction
-        Promise.value(Optional.ofNullable(transaction))
-    }
-
-    Promise<List<BlockTransaction>> allTransactions() {
-        def cursor = transactions.find()
-        log.info("Found ${cursor.size()} transactions")
-
-        Promise.value(cursor.collect {it.findAll { it.key != '_id' } as BlockTransaction})
-    }
-
-    Promise<String> newTransaction(BlockTransaction transaction) {
-        log.info("Adding new transaction $transaction.id")
-        transactions << JSON.parse(mapper.writeValueAsString(transaction))
-        Promise.value(transaction.id)
-    }
-
-    Promise<String> updateTransaction(BlockTransaction transaction) {
-        log.info("Updating transaction $transaction.id")
-        transactions.findAndModify(
-                ['id':transaction.id] as BasicDBObject,
-                JSON.parse(mapper.writeValueAsString(transaction)) as DBObject
-        )
-        Promise.value(transaction.id)
-    }
-
-    private DBCollection getTransactions() {
-        database.getCollection('transactions')
-    }
-
-    private DB getDatabase() {
-        if(!db) {
-            db = new GMongo(new MongoURI(dbUrl)).getDB('dbt')
-        }
-        db
-    }
+    Promise<String> newTransaction(BlockTransaction transaction)
+
+    Promise<String> updateTransaction(BlockTransaction transaction)
 }

dbt-core/src/main/groovy/com/devsoap/dbt/services/MongoLedgerService.groovy

@@ -0,0 +1,82 @@
+/*
+ * Copyright 2018 Devsoap Inc.
+ *
+ * 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 com.devsoap.dbt.services
+
+import com.devsoap.dbt.config.DBTConfig
+import com.devsoap.dbt.data.BlockTransaction
+import com.fasterxml.jackson.databind.ObjectMapper
+import com.gmongo.GMongo
+import com.mongodb.*
+import com.mongodb.util.JSON
+import groovy.util.logging.Slf4j
+import ratpack.exec.Promise
+
+import javax.inject.Inject
+
+@Slf4j
+class MongoLedgerService implements LedgerService {
+
+    private final String dbUrl
+    private DB db
+    private final ObjectMapper mapper
+
+    @Inject
+    MongoLedgerService(DBTConfig config, ObjectMapper mapper) {
+        dbUrl = config.ledger.databaseUrl
+        this.mapper = mapper
+    }
+
+    @Override
+    Promise<Optional<BlockTransaction>> fetchTransaction(String transactionId) {
+        BlockTransaction transaction = transactions.findOne(['id':transactionId])?.findAll { it.key != '_id' } as BlockTransaction
+        Promise.value(Optional.ofNullable(transaction))
+    }
+
+    @Override
+    Promise<List<BlockTransaction>> allTransactions() {
+        def cursor = transactions.find()
+        log.info("Found ${cursor.size()} transactions")
+        Promise.value(cursor.collect {it.findAll { it.key != '_id' } as BlockTransaction})
+    }
+
+    @Override
+    Promise<String> newTransaction(BlockTransaction transaction) {
+        log.info("Adding new transaction $transaction.id")
+        transactions << JSON.parse(mapper.writeValueAsString(transaction))
+        Promise.value(transaction.id)
+    }
+
+    @Override
+    Promise<String> updateTransaction(BlockTransaction transaction) {
+        log.info("Updating transaction $transaction.id")
+        transactions.findAndModify(
+                ['id':transaction.id] as BasicDBObject,
+                JSON.parse(mapper.writeValueAsString(transaction)) as DBObject
+        )
+        Promise.value(transaction.id)
+    }
+
+    private DBCollection getTransactions() {
+        database.getCollection('transactions')
+    }
+
+    private DB getDatabase() {
+        if(!db) {
+            db = new GMongo(new MongoURI(dbUrl)).getDB('dbt')
+        }
+        db
+    }
+}

dbt-test/src/ratpack/Ratpack.groovy

@@ -17,6 +17,8 @@
 import com.devsoap.dbt.config.DBTConfig
 import com.devsoap.dbt.modules.DBTExecutorModule
 import com.devsoap.dbt.modules.DBTLedgerModule
+import com.devsoap.dbt.services.InMemoryLedgerService
+import com.devsoap.dbt.services.LedgerService
 import org.flywaydb.core.Flyway
 import org.h2.jdbcx.JdbcDataSource
 import ratpack.service.Service
@@ -35,16 +37,14 @@ ratpack {
 
   bindings {
 
-    module (DBTLedgerModule) {
-      it.executor.remoteUrl = 'http://localhost:8888/executor'
-    }
-
-    module (DBTExecutorModule) {
-      it.ledger.remoteUrl = 'http://localhost:8888/ledger'
-    }
+    // Configure Ledger
+    bind(LedgerService, InMemoryLedgerService)
+    module (DBTLedgerModule)
 
+    // Configure executor
     bindInstance(DataSource, new JdbcDataSource(url: 'jdbc:h2:mem:dbtdb;DB_CLOSE_DELAY=-1', user: ''))
     bind FlywayMigrationService
+    module (DBTExecutorModule)
   }
 }
 

docker-executor/src/ratpack/Ratpack.groovy

@@ -1,4 +1,6 @@
 import com.devsoap.dbt.modules.DBTExecutorModule
+import com.devsoap.dbt.services.LedgerService
+import com.devsoap.dbt.services.MongoLedgerService
 import org.h2.jdbcx.JdbcDataSource
 import org.slf4j.LoggerFactory
 
@@ -16,9 +18,6 @@ ratpack {
 
     bindings {
         bindInstance(DataSource, new JdbcDataSource(url: 'jdbc:h2:mem:dbtdb;DB_CLOSE_DELAY=-1', user: ''))
-        module (DBTExecutorModule)  { config ->
-            log.info "Executor available at $config.executor.remoteUrl"
-            log.info "Ledger available at $config.ledger.remoteUrl"
-        }
+        module (DBTExecutorModule)
     }
 }

docker-ledger/src/ratpack/Ratpack.groovy

@@ -1,4 +1,6 @@
 import com.devsoap.dbt.modules.DBTLedgerModule
+import com.devsoap.dbt.services.LedgerService
+import com.devsoap.dbt.services.MongoLedgerService
 import com.mongodb.MongoClient
 import com.mongodb.MongoClientURI
 import org.slf4j.LoggerFactory
@@ -14,9 +16,7 @@ ratpack {
     }
 
     bindings {
-        module (DBTLedgerModule)  { config ->
-            log.info("Using Mongo database at $config.ledger.databaseUrl")
-            bindInstance(MongoClient, new MongoClient(new MongoClientURI(config.ledger.databaseUrl)))
-        }
+        bind(LedgerService, MongoLedgerService)
+        module (DBTLedgerModule)
     }
 }