Update examples to use 1.0.0-rc1 APIs

Author: kmahar

Examples/Docs/Sources/AsyncExamples/main.swift

@@ -10,7 +10,7 @@ private func causalConsistency() throws {
     let elg = MultiThreadedEventLoopGroup(numberOfThreads: 1)
     let client1 = try MongoClient(using: elg)
     defer {
-        client1.syncShutdown()
+        try? client1.syncClose()
         try? elg.syncShutdownGracefully()
     }
 
@@ -40,7 +40,7 @@ private func causalConsistency() throws {
         s2.advanceClusterTime(to: s1.clusterTime!)
         s2.advanceOperationTime(to: s1.operationTime!)
 
-        dbOptions.readPreference = ReadPreference(.secondary)
+        dbOptions.readPreference = .secondary
         let items2 = client2.db("test", options: dbOptions).collection("items")
 
         return items2.find(["end": .null], session: s2).flatMap { cursor in
@@ -147,80 +147,3 @@ private func changeStreams() throws {
         // End Changestream Example 4
     }
 }
-
-/// Examples used for the MongoDB documentation on Transactions.
-/// - SeeAlso: https://docs.mongodb.com/manual/core/transactions/
-private func transactions() throws {
-    let elg = MultiThreadedEventLoopGroup(numberOfThreads: 1)
-    let client = try MongoClient(using: elg)
-    let session = client.startSession()
-
-    defer {
-        client.syncShutdown()
-        cleanupMongoSwift()
-        try? elg.syncShutdownGracefully()
-    }
-
-    do {
-        // Start Transactions Example 1
-        let db = client.db("test")
-        let srcColl = db.collection("src")
-        let destColl = db.collection("coll")
-        let docToMove: Document = ["hello": "world"]
-
-        session.startTransaction().flatMap { _ in
-            srcColl.deleteOne(docToMove, session: session)
-        }.flatMap { _ in
-            destColl.insertOne(docToMove, session: session)
-        }.flatMap { _ in
-            session.commitTransaction()
-        }.whenFailure { _ in
-            session.abortTransaction()
-            // handle error
-        }
-        // End Transactions Example 1
-    }
-
-    do {
-        // Start Transactions Example 2
-        let txnOpts = TransactionOptions(
-            maxCommitTimeMS: 30,
-            readConcern: ReadConcern(.local),
-            readPreference: .primaryPreferred,
-            writeConcern: try WriteConcern(w: .majority)
-        )
-
-        session.startTransaction(options: txnOpts).flatMap { _ in
-            // do something
-        }.flatMap { _ in
-            session.commitTransaction()
-        }.whenFailure { _ in
-            session.abortTransaction()
-            // handle error
-        }
-        // End Transactions Example 2
-    }
-
-    do {
-        // Start Transactions Example 3
-        let txnOpts = TransactionOptions(
-            maxCommitTimeMS: 30,
-            readConcern: ReadConcern(.local),
-            readPreference: .primaryPreferred,
-            writeConcern: try WriteConcern(w: .majority)
-        )
-
-        let client = try MongoClient(using: elg)
-        let session = client.startSession(options: ClientSessionOptions(defaultTransactionOptions: txnOpts))
-
-        session.startTransaction().flatMap { _ in
-            // do something
-        }.flatMap { _ in
-            session.commitTransaction()
-        }.whenFailure { _ in
-            session.abortTransaction()
-            // handle error
-        }
-        // End Transactions Example 3
-    }
-}

Examples/Docs/Sources/SyncExamples/main.swift

@@ -32,7 +32,7 @@ private func causalConsistency() throws {
         s2.advanceClusterTime(to: s1.clusterTime!)
         s2.advanceOperationTime(to: s1.operationTime!)
 
-        dbOptions.readPreference = ReadPreference(.secondary)
+        dbOptions.readPreference = .secondary
         let items2 = client2.db("test", options: dbOptions).collection("items")
         for item in try items2.find(["end": .null], session: s2) {
             print(item)

Examples/KituraExample/Sources/KituraExample/main.swift

@@ -13,7 +13,7 @@ let eventLoopGroup = MultiThreadedEventLoopGroup(numberOfThreads: 4)
 let mongoClient = try MongoClient(using: eventLoopGroup)
 
 defer {
-    mongoClient.syncShutdown()
+    try? mongoClient.syncClose()
     cleanupMongoSwift()
     try? eventLoopGroup.syncShutdownGracefully()
 }

Examples/PerfectExample/Sources/PerfectExample/main.swift

@@ -16,7 +16,7 @@ let mongoClient = try MongoClient(using: elg)
 
 defer {
     // Close the client and clean up global driver resources.
-    mongoClient.syncShutdown()
+    try? mongoClient.syncClose()
     cleanupMongoSwift()
     // Shut down the EventLoopGroup.
     try? elg.syncShutdownGracefully()

Examples/VaporExample/Sources/VaporExample/main.swift

@@ -8,7 +8,7 @@ let app = Application(env)
 
 defer {
     // shut down the client and clean up the driver's global resources.
-    app.mongoClient.syncShutdown()
+    try? app.mongoClient.syncClose()
     cleanupMongoSwift()
     app.shutdown()
 }