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Fix for issue 664: https://github.com/docker/distribution/issues/664

Browse source 
Errors thrown by storage drivers don't have the name of the driver, causing user
confusion about whether the error is coming from Docker or from a storage driver.
This change adds the storage driver name to each error message.

This required changing ErrUnsupportedDriver to a type, leading to code changes
whenever ErrUnsupportedDriver is used.  The tests check whether the driver name
appears in the error message.

Signed-off-by: Amit Shukla <amit.shukla@docker.com>
This commit is contained in:
amitshukla 2015-10-02 16:19:06 -07:00 • committed by Richard Scothern
parent bd958d8b88
commit 7840a5bc8f
10 changed files with 99 additions and 44 deletions
Download patch file Download diff file Expand all files Collapse all files

23
docs/storage/driver/testsuites/testsuites.go
View file

@ -10,6 +10,7 @@ import (
"os"
"path"
"sort"
"strings"
"sync"
"testing"
"time"
@ -145,10 +146,12 @@ func (suite *DriverSuite) TestInvalidPaths(c *check.C) {
defer suite.StorageDriver.Delete(suite.ctx, firstPart(filename))
c.Assert(err, check.NotNil)
c.Assert(err, check.FitsTypeOf, storagedriver.InvalidPathError{})
c.Assert(strings.Contains(err.Error(), suite.Name()), check.Equals, true)
_, err = suite.StorageDriver.GetContent(suite.ctx, filename)
c.Assert(err, check.NotNil)
c.Assert(err, check.FitsTypeOf, storagedriver.InvalidPathError{})
c.Assert(strings.Contains(err.Error(), suite.Name()), check.Equals, true)
}
}
@ -205,6 +208,7 @@ func (suite *DriverSuite) TestReadNonexistent(c *check.C) {
_, err := suite.StorageDriver.GetContent(suite.ctx, filename)
c.Assert(err, check.NotNil)
c.Assert(err, check.FitsTypeOf, storagedriver.PathNotFoundError{})
c.Assert(strings.Contains(err.Error(), suite.Name()), check.Equals, true)
}
// TestWriteReadStreams1 tests a simple write-read streaming workflow.
@ -321,6 +325,7 @@ func (suite *DriverSuite) TestReadStreamWithOffset(c *check.C) {
c.Assert(err.(storagedriver.InvalidOffsetError).Offset, check.Equals, int64(-1))
c.Assert(err.(storagedriver.InvalidOffsetError).Path, check.Equals, filename)
c.Assert(reader, check.IsNil)
c.Assert(strings.Contains(err.Error(), suite.Name()), check.Equals, true)
// Read past the end of the content and make sure we get a reader that
// returns 0 bytes and io.EOF
@ -443,6 +448,7 @@ func (suite *DriverSuite) testContinueStreamAppend(c *check.C, chunkSize int64)
c.Assert(err, check.FitsTypeOf, storagedriver.InvalidOffsetError{})
c.Assert(err.(storagedriver.InvalidOffsetError).Path, check.Equals, filename)
c.Assert(err.(storagedriver.InvalidOffsetError).Offset, check.Equals, int64(-1))
c.Assert(strings.Contains(err.Error(), suite.Name()), check.Equals, true)
}
// TestReadNonexistentStream tests that reading a stream for a nonexistent path
@ -453,10 +459,12 @@ func (suite *DriverSuite) TestReadNonexistentStream(c *check.C) {
_, err := suite.StorageDriver.ReadStream(suite.ctx, filename, 0)
c.Assert(err, check.NotNil)
c.Assert(err, check.FitsTypeOf, storagedriver.PathNotFoundError{})
c.Assert(strings.Contains(err.Error(), suite.Name()), check.Equals, true)
_, err = suite.StorageDriver.ReadStream(suite.ctx, filename, 64)
c.Assert(err, check.NotNil)
c.Assert(err, check.FitsTypeOf, storagedriver.PathNotFoundError{})
c.Assert(strings.Contains(err.Error(), suite.Name()), check.Equals, true)
}
// TestList checks the returned list of keys after populating a directory tree.
@ -517,6 +525,7 @@ func (suite *DriverSuite) TestMove(c *check.C) {
_, err = suite.StorageDriver.GetContent(suite.ctx, sourcePath)
c.Assert(err, check.NotNil)
c.Assert(err, check.FitsTypeOf, storagedriver.PathNotFoundError{})
c.Assert(strings.Contains(err.Error(), suite.Name()), check.Equals, true)
}
// TestMoveOverwrite checks that a moved object no longer exists at the source
@ -546,6 +555,7 @@ func (suite *DriverSuite) TestMoveOverwrite(c *check.C) {
_, err = suite.StorageDriver.GetContent(suite.ctx, sourcePath)
c.Assert(err, check.NotNil)
c.Assert(err, check.FitsTypeOf, storagedriver.PathNotFoundError{})
c.Assert(strings.Contains(err.Error(), suite.Name()), check.Equals, true)
}
// TestMoveNonexistent checks that moving a nonexistent key fails and does not
@ -563,6 +573,7 @@ func (suite *DriverSuite) TestMoveNonexistent(c *check.C) {
err = suite.StorageDriver.Move(suite.ctx, sourcePath, destPath)
c.Assert(err, check.NotNil)
c.Assert(err, check.FitsTypeOf, storagedriver.PathNotFoundError{})
c.Assert(strings.Contains(err.Error(), suite.Name()), check.Equals, true)
received, err := suite.StorageDriver.GetContent(suite.ctx, destPath)
c.Assert(err, check.IsNil)
@ -600,6 +611,7 @@ func (suite *DriverSuite) TestDelete(c *check.C) {
_, err = suite.StorageDriver.GetContent(suite.ctx, filename)
c.Assert(err, check.NotNil)
c.Assert(err, check.FitsTypeOf, storagedriver.PathNotFoundError{})
c.Assert(strings.Contains(err.Error(), suite.Name()), check.Equals, true)
}
// TestURLFor checks that the URLFor method functions properly, but only if it
@ -614,7 +626,7 @@ func (suite *DriverSuite) TestURLFor(c *check.C) {
c.Assert(err, check.IsNil)
url, err := suite.StorageDriver.URLFor(suite.ctx, filename, nil)
if err == storagedriver.ErrUnsupportedMethod {
if _, ok := err.(*storagedriver.ErrUnsupportedMethod); ok {
return
}
c.Assert(err, check.IsNil)
@ -628,7 +640,7 @@ func (suite *DriverSuite) TestURLFor(c *check.C) {
c.Assert(read, check.DeepEquals, contents)
url, err = suite.StorageDriver.URLFor(suite.ctx, filename, map[string]interface{}{"method": "HEAD"})
if err == storagedriver.ErrUnsupportedMethod {
if _, ok := err.(*storagedriver.ErrUnsupportedMethod); ok {
return
}
c.Assert(err, check.IsNil)
@ -644,6 +656,7 @@ func (suite *DriverSuite) TestDeleteNonexistent(c *check.C) {
err := suite.StorageDriver.Delete(suite.ctx, filename)
c.Assert(err, check.NotNil)
c.Assert(err, check.FitsTypeOf, storagedriver.PathNotFoundError{})
c.Assert(strings.Contains(err.Error(), suite.Name()), check.Equals, true)
}
// TestDeleteFolder checks that deleting a folder removes all child elements.
@ -671,6 +684,7 @@ func (suite *DriverSuite) TestDeleteFolder(c *check.C) {
_, err = suite.StorageDriver.GetContent(suite.ctx, path.Join(dirname, filename1))
c.Assert(err, check.NotNil)
c.Assert(err, check.FitsTypeOf, storagedriver.PathNotFoundError{})
c.Assert(strings.Contains(err.Error(), suite.Name()), check.Equals, true)
_, err = suite.StorageDriver.GetContent(suite.ctx, path.Join(dirname, filename2))
c.Assert(err, check.IsNil)
@ -684,14 +698,17 @@ func (suite *DriverSuite) TestDeleteFolder(c *check.C) {
_, err = suite.StorageDriver.GetContent(suite.ctx, path.Join(dirname, filename1))
c.Assert(err, check.NotNil)
c.Assert(err, check.FitsTypeOf, storagedriver.PathNotFoundError{})
c.Assert(strings.Contains(err.Error(), suite.Name()), check.Equals, true)
_, err = suite.StorageDriver.GetContent(suite.ctx, path.Join(dirname, filename2))
c.Assert(err, check.NotNil)
c.Assert(err, check.FitsTypeOf, storagedriver.PathNotFoundError{})
c.Assert(strings.Contains(err.Error(), suite.Name()), check.Equals, true)
_, err = suite.StorageDriver.GetContent(suite.ctx, path.Join(dirname, filename3))
c.Assert(err, check.NotNil)
c.Assert(err, check.FitsTypeOf, storagedriver.PathNotFoundError{})
c.Assert(strings.Contains(err.Error(), suite.Name()), check.Equals, true)
}
// TestStatCall runs verifies the implementation of the storagedriver's Stat call.
@ -707,11 +724,13 @@ func (suite *DriverSuite) TestStatCall(c *check.C) {
fi, err := suite.StorageDriver.Stat(suite.ctx, dirPath)
c.Assert(err, check.NotNil)
c.Assert(err, check.FitsTypeOf, storagedriver.PathNotFoundError{})
c.Assert(strings.Contains(err.Error(), suite.Name()), check.Equals, true)
c.Assert(fi, check.IsNil)
fi, err = suite.StorageDriver.Stat(suite.ctx, filePath)
c.Assert(err, check.NotNil)
c.Assert(err, check.FitsTypeOf, storagedriver.PathNotFoundError{})
c.Assert(strings.Contains(err.Error(), suite.Name()), check.Equals, true)
c.Assert(fi, check.IsNil)
err = suite.StorageDriver.PutContent(suite.ctx, filePath, content)