Update to crystal-db 0.12.0 (refactor connection factory) (#107)

* Refactor connection builder

* Update specs

* Update for ConnectionBuilder

* Update to crystal-db ~> 0.12.0

shard.yml

@@ -4,11 +4,11 @@ version: 0.14.0
 dependencies:
   db:
     github: crystal-lang/crystal-db
-    version: ~> 0.11.0
+    version: ~> 0.12.0
 
 authors:
   - Juan Wajnerman <jwajnerman@manas.tech>
-  - Brian J. Cardiff <bcardiff@manas.tech>
+  - Brian J. Cardiff <bcardiff@gmail.com>
 
 crystal: ">= 1.0.0, < 2.0.0"
 

spec/db_spec.cr

@@ -5,7 +5,7 @@ require "semantic_version"
 private class NotSupportedType
 end
 
-DB::DriverSpecs(MySql::Any).run do
+DB::DriverSpecs(MySql::Any).run do |ctx|
   before do
     DB.open db_url do |db|
       db.exec "DROP DATABASE IF EXISTS crystal_mysql_test"
@@ -149,7 +149,7 @@ DB::DriverSpecs(MySql::Any).run do
     db.exec %(insert into a (i, str) values (23, "bai bai");)
 
     2.times do |i|
-      DB.open db.uri do |db|
+      DB.open ctx.connection_string do |db|
         begin
           db.query("SELECT i, str FROM a WHERE i = ?", 23) do |rs|
             rs.move_next
@@ -170,7 +170,7 @@ DB::DriverSpecs(MySql::Any).run do
 
   it "does not close a connection before cleaning up the result set" do |db|
     begin
-      DB.open db.uri do |db|
+      DB.open ctx.connection_string do |db|
         db.query("select 'foo'") do |rs|
           rs.each do
             rs.read(String)
@@ -189,7 +189,7 @@ DB::DriverSpecs(MySql::Any).run do
 
   it "does not close a connection before cleaning up the text result set" do |db|
     begin
-      DB.open db.uri do |db|
+      DB.open ctx.connection_string do |db|
         db.unprepared.query("select 'foo'") do |rs|
           rs.each do
             rs.read(String)
@@ -211,7 +211,7 @@ DB::DriverSpecs(MySql::Any).run do
     db.exec %(insert into a (i, str) values (23, "bai bai");)
 
     2.times do |i|
-      DB.open db.uri do |db|
+      DB.open ctx.connection_string do |db|
         begin
           db.unprepared.query("SELECT i, str FROM a WHERE i = 23") do |rs|
             rs.each do

src/mysql/connection.cr

@@ -1,31 +1,46 @@
 require "socket"
 
 class MySql::Connection < DB::Connection
-  def initialize(context : DB::ConnectionContext)
-    super(context)
-    @socket = uninitialized TCPSocket
-
-    begin
-      host = context.uri.hostname || raise "no host provided"
-      port = context.uri.port || 3306
-      username = context.uri.user
-      password = context.uri.password
-
-      charset = context.uri.query_params.fetch "encoding", Collations.default_collation
-      charset_id = Collations.id_for_collation(charset).to_u8
-
-      path = context.uri.path
+  record Options,
+    host : String,
+    port : Int32,
+    username : String?,
+    password : String?,
+    initial_catalog : String?,
+    charset : String do
+    def self.from_uri(uri : URI) : Options
+      host = uri.hostname || raise "no host provided"
+      port = uri.port || 3306
+      username = uri.user
+      password = uri.password
+
+      charset = uri.query_params.fetch "encoding", Collations.default_collation
+
+      path = uri.path
       if path && path.size > 1
         initial_catalog = path[1..-1]
       else
         initial_catalog = nil
       end
 
-      @socket = TCPSocket.new(host, port)
+      Options.new(
+        host: host, port: port, username: username, password: password,
+        initial_catalog: initial_catalog, charset: charset)
+    end
+  end
+
+  def initialize(options : ::DB::Connection::Options, mysql_options : ::MySql::Connection::Options)
+    super(options)
+    @socket = uninitialized TCPSocket
+
+    begin
+      charset_id = Collations.id_for_collation(mysql_options.charset).to_u8
+
+      @socket = TCPSocket.new(mysql_options.host, mysql_options.port)
       handshake = read_packet(Protocol::HandshakeV10)
 
       write_packet(1) do |packet|
-        Protocol::HandshakeResponse41.new(username, password, initial_catalog, handshake.auth_plugin_data, charset_id).write(packet)
+        Protocol::HandshakeResponse41.new(mysql_options.username, mysql_options.password, mysql_options.initial_catalog, handshake.auth_plugin_data, charset_id).write(packet)
       end
 
       read_ok_or_err do |packet, status|

src/mysql/driver.cr

@@ -1,6 +1,16 @@
 class MySql::Driver < DB::Driver
-  def build_connection(context : DB::ConnectionContext) : MySql::Connection
-    MySql::Connection.new(context)
+  class ConnectionBuilder < ::DB::ConnectionBuilder
+    def initialize(@options : ::DB::Connection::Options, @mysql_options : MySql::Connection::Options)
+    end
+
+    def build : ::DB::Connection
+      MySql::Connection.new(@options, @mysql_options)
+    end
+  end
+
+  def connection_builder(uri : URI) : ::DB::ConnectionBuilder
+    params = HTTP::Params.parse(uri.query || "")
+    ConnectionBuilder.new(connection_options(params), MySql::Connection::Options.from_uri(uri))
   end
 end