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* feat: add support for FUSE This is a port of GoogleCloudPlatform/cloud-sql-proxy#1381 and GoogleCloudPlatform/cloud-sql-proxy#1400. Fixes #132
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// Copyright 2022 Google LLC | ||
// | ||
// 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. | ||
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package cmd | ||
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import ( | ||
"os" | ||
"path/filepath" | ||
"testing" | ||
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"github.com/spf13/cobra" | ||
) | ||
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func TestNewCommandArgumentsOnLinux(t *testing.T) { | ||
defaultTmp := filepath.Join(os.TempDir(), "csql-tmp") | ||
tcs := []struct { | ||
desc string | ||
args []string | ||
wantDir string | ||
wantTempDir string | ||
}{ | ||
{ | ||
desc: "using the fuse flag", | ||
args: []string{"--fuse", "/cloudsql"}, | ||
wantDir: "/cloudsql", | ||
wantTempDir: defaultTmp, | ||
}, | ||
{ | ||
desc: "using the fuse temporary directory flag", | ||
args: []string{"--fuse", "/cloudsql", "--fuse-tmp-dir", "/mycooldir"}, | ||
wantDir: "/cloudsql", | ||
wantTempDir: "/mycooldir", | ||
}, | ||
} | ||
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for _, tc := range tcs { | ||
t.Run(tc.desc, func(t *testing.T) { | ||
c := NewCommand() | ||
// Keep the test output quiet | ||
c.SilenceUsage = true | ||
c.SilenceErrors = true | ||
// Disable execute behavior | ||
c.RunE = func(*cobra.Command, []string) error { | ||
return nil | ||
} | ||
c.SetArgs(tc.args) | ||
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err := c.Execute() | ||
if err != nil { | ||
t.Fatalf("want error = nil, got = %v", err) | ||
} | ||
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if got, want := c.conf.FUSEDir, tc.wantDir; got != want { | ||
t.Fatalf("FUSEDir: want = %v, got = %v", want, got) | ||
} | ||
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if got, want := c.conf.FUSETempDir, tc.wantTempDir; got != want { | ||
t.Fatalf("FUSEDir: want = %v, got = %v", want, got) | ||
} | ||
}) | ||
} | ||
} |
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// Copyright 2022 Google LLC | ||
// | ||
// 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. | ||
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package cmd | ||
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import ( | ||
"testing" | ||
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"github.com/spf13/cobra" | ||
) | ||
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func TestWindowsDoesNotSupportFUSE(t *testing.T) { | ||
c := NewCommand() | ||
// Keep the test output quiet | ||
c.SilenceUsage = true | ||
c.SilenceErrors = true | ||
// Disable execute behavior | ||
c.RunE = func(*cobra.Command, []string) error { return nil } | ||
c.SetArgs([]string{"--fuse"}) | ||
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err := c.Execute() | ||
if err == nil { | ||
t.Fatal("want error != nil, got = nil") | ||
} | ||
} |
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// Copyright 2022 Google LLC | ||
// | ||
// 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 | ||
// | ||
// https://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. | ||
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//go:build !windows | ||
// +build !windows | ||
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package proxy | ||
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import ( | ||
"context" | ||
"syscall" | ||
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"github.com/hanwen/go-fuse/v2/fs" | ||
"github.com/hanwen/go-fuse/v2/fuse" | ||
"github.com/hanwen/go-fuse/v2/fuse/nodefs" | ||
) | ||
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// symlink implements a symbolic link, returning the underlying path when | ||
// Readlink is called. | ||
type symlink struct { | ||
fs.Inode | ||
path string | ||
} | ||
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// Readlink implements fs.NodeReadlinker and returns the symlink's path. | ||
func (s *symlink) Readlink(ctx context.Context) ([]byte, syscall.Errno) { | ||
return []byte(s.path), fs.OK | ||
} | ||
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// readme represents a static read-only text file. | ||
type readme struct { | ||
fs.Inode | ||
} | ||
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const readmeText = ` | ||
When applications attempt to open files in this directory, a remote connection | ||
to the AlloyDB instance of the same name will be established. | ||
For example, when you run one of the following commands, the proxy will initiate | ||
a connection to the corresponding Cloud SQL instance, given you have the correct | ||
IAM permissions. | ||
psql "host=/somedir/project.region.cluster.instance dbname=mydb user=myuser" | ||
The proxy will create a directory with the instance short name, and create a | ||
socket inside that directory with the special Postgres name: .s.PGSQL.5432. | ||
Listing the contents of this directory will show all instances with active | ||
connections. | ||
` | ||
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// Getattr implements fs.NodeGetattrer and indicates that this file is a regular | ||
// file. | ||
func (*readme) Getattr(ctx context.Context, f fs.FileHandle, out *fuse.AttrOut) syscall.Errno { | ||
*out = fuse.AttrOut{Attr: fuse.Attr{ | ||
Mode: 0444 | syscall.S_IFREG, | ||
Size: uint64(len(readmeText)), | ||
}} | ||
return fs.OK | ||
} | ||
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// Read implements fs.NodeReader and supports incremental reads. | ||
func (*readme) Read(ctx context.Context, f fs.FileHandle, dest []byte, off int64) (fuse.ReadResult, syscall.Errno) { | ||
end := int(off) + len(dest) | ||
if end > len(readmeText) { | ||
end = len(readmeText) | ||
} | ||
return fuse.ReadResultData([]byte(readmeText[off:end])), fs.OK | ||
} | ||
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// Open implements fs.NodeOpener and supports opening the README as a read-only | ||
// file. | ||
func (*readme) Open(ctx context.Context, mode uint32) (fs.FileHandle, uint32, syscall.Errno) { | ||
df := nodefs.NewDataFile([]byte(readmeText)) | ||
rf := nodefs.NewReadOnlyFile(df) | ||
return rf, 0, fs.OK | ||
} |
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// Copyright 2022 Google LLC | ||
// | ||
// 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. | ||
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package proxy | ||
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import ( | ||
"errors" | ||
"os" | ||
) | ||
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const ( | ||
macfusePath = "/Library/Filesystems/macfuse.fs/Contents/Resources/mount_macfuse" | ||
osxfusePath = "/Library/Filesystems/osxfuse.fs/Contents/Resources/mount_osxfuse" | ||
) | ||
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// SupportsFUSE checks if macfuse or osxfuse are installed on the host by | ||
// looking for both in their known installation location. | ||
func SupportsFUSE() error { | ||
// This code follows the same strategy as hanwen/go-fuse. | ||
// See https://github.com/hanwen/go-fuse/blob/0f728ba15b38579efefc3dc47821882ca18ffea7/fuse/mount_darwin.go#L121-L124. | ||
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// check for macfuse first (newer version of osxfuse) | ||
if _, err := os.Stat(macfusePath); err != nil { | ||
// if that fails, check for osxfuse next | ||
if _, err := os.Stat(osxfusePath); err != nil { | ||
return errors.New("failed to find osxfuse or macfuse: verify FUSE installation and try again (see https://osxfuse.github.io).") | ||
} | ||
} | ||
return nil | ||
} |
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