Add GetPoolByName() for calling rados_pool_lookup()

Signed-off-by: Niels de Vos <ndevos@redhat.com>

rados/conn.go

@@ -280,6 +280,22 @@ func (c *Conn) DeletePool(name string) error {
 	}
 }
 
+// GetPoolByName returns the ID of the pool with a given name.
+func (c *Conn) GetPoolByName(name string) (int64, error) {
+	if err := c.ensure_connected(); err != nil {
+		fmt.Println("NOT CONNECTED WHOOPS")
+		return 0, err
+	}
+	c_name := C.CString(name)
+	defer C.free(unsafe.Pointer(c_name))
+	ret := int64(C.rados_pool_lookup(c.cluster, c_name))
+	if ret < 0 {
+		return 0, RadosError(ret)
+	} else {
+		return ret, nil
+	}
+}
+
 // MonCommand sends a command to one of the monitors
 func (c *Conn) MonCommand(args []byte) (buffer []byte, info string, err error) {
 	return c.monCommand(args, nil)

rados/rados_test.go

@@ -246,6 +246,40 @@ func (suite *RadosTestSuite) TestGetInstanceID() {
 func (suite *RadosTestSuite) TestMakeDeletePool() {
 	suite.SetupConnection()
 
+	// check that new pool name is unique
+	new_name := uuid.Must(uuid.NewV4()).String()
+	_, err := suite.conn.GetPoolByName(new_name)
+	if err == nil {
+		suite.T().Error("Random pool name exists!")
+		return
+	}
+
+	// create pool
+	err = suite.conn.MakePool(new_name)
+	assert.NoError(suite.T(), err)
+
+	// verify that the new pool name exists
+	pool, err := suite.conn.GetPoolByName(new_name)
+	assert.NoError(suite.T(), err)
+
+	if pool == 0 {
+		suite.T().Error("Cannot find newly created pool")
+	}
+
+	// delete the pool
+	err = suite.conn.DeletePool(new_name)
+	assert.NoError(suite.T(), err)
+
+	// verify that it is gone
+	pool, _ = suite.conn.GetPoolByName(new_name)
+	if pool != 0 {
+		suite.T().Error("Deleted pool still exists")
+	}
+}
+
+func (suite *RadosTestSuite) TestGetPoolByName() {
+	suite.SetupConnection()
+
 	// get current list of pool
 	pools, err := suite.conn.ListPools()
 	assert.NoError(suite.T(), err)
@@ -259,6 +293,12 @@ func (suite *RadosTestSuite) TestMakeDeletePool() {
 		}
 	}
 
+	pool, _ := suite.conn.GetPoolByName(new_name)
+	if pool != 0 {
+		suite.T().Error("Pool does not exist, but was found!")
+		return
+	}
+
 	// create pool
 	err = suite.conn.MakePool(new_name)
 	assert.NoError(suite.T(), err)
@@ -278,6 +318,13 @@ func (suite *RadosTestSuite) TestMakeDeletePool() {
 		suite.T().Error("Cannot find newly created pool")
 	}
 
+	pool, err = suite.conn.GetPoolByName(new_name)
+	assert.NoError(suite.T(), err)
+	if pool == 0 {
+		suite.T().Error("Pool not found!")
+		return
+	}
+
 	// delete the pool
 	err = suite.conn.DeletePool(new_name)
 	assert.NoError(suite.T(), err)
@@ -296,6 +343,12 @@ func (suite *RadosTestSuite) TestMakeDeletePool() {
 	if found {
 		suite.T().Error("Deleted pool still exists")
 	}
+
+	pool, err = suite.conn.GetPoolByName(new_name)
+	if pool != 0 || err == nil {
+		suite.T().Error("Pool should have been deleted, but was found!")
+		return
+	}
 }
 
 func (suite *RadosTestSuite) TestPingMonitor() {