lang: Initial implementation of the mgmt language
This is an initial implementation of the mgmt language. It is a declarative (immutable) functional, reactive, domain specific programming language. It is intended to be a language that is: * safe * powerful * easy to reason about With these properties, we hope this language, and the mgmt engine will allow you to model the real-time systems that you'd like to automate. This also includes a number of other associated changes. Sorry for the large size of this patch.
This commit is contained in:
James Shubin
227
etcd/fs/fs_test.go
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227
etcd/fs/fs_test.go
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// Mgmt
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// Copyright (C) 2013-2018+ James Shubin and the project contributors
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// Written by James Shubin <james@shubin.ca> and the project contributors
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//
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// This program is free software: you can redistribute it and/or modify
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// it under the terms of the GNU General Public License as published by
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// the Free Software Foundation, either version 3 of the License, or
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// (at your option) any later version.
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//
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// This program is distributed in the hope that it will be useful,
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// but WITHOUT ANY WARRANTY; without even the implied warranty of
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// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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// GNU General Public License for more details.
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//
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// You should have received a copy of the GNU General Public License
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// along with this program. If not, see <http://www.gnu.org/licenses/>.
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package fs_test // named this way to make it easier for examples
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import (
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"io"
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"testing"
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"github.com/purpleidea/mgmt/etcd"
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etcdfs "github.com/purpleidea/mgmt/etcd/fs"
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"github.com/purpleidea/mgmt/util"
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"github.com/spf13/afero"
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)
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// XXX: spawn etcd for this test, like `cdtmpmkdir && etcd` and then kill it...
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// XXX: write a bunch more tests to test this
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// TODO: apparently using 0666 is equivalent to respecting the current umask
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const (
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umask = 0666
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superblock = "/some/superblock" // TODO: generate randomly per test?
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)
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func TestFs1(t *testing.T) {
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etcdClient := &etcd.ClientEtcd{
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Seeds: []string{"localhost:2379"}, // endpoints
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}
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if err := etcdClient.Connect(); err != nil {
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t.Logf("client connection error: %+v", err)
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return
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}
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defer etcdClient.Destroy()
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etcdFs := &etcdfs.Fs{
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Client: etcdClient.GetClient(),
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Metadata: superblock,
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DataPrefix: etcdfs.DefaultDataPrefix,
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}
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//var etcdFs afero.Fs = NewEtcdFs()
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if err := etcdFs.Mkdir("/", umask); err != nil {
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t.Logf("error: %+v", err)
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if err != etcdfs.ErrExist {
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return
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}
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}
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if err := etcdFs.Mkdir("/tmp", umask); err != nil {
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t.Logf("error: %+v", err)
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if err != etcdfs.ErrExist {
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return
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}
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}
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fi, err := etcdFs.Stat("/tmp")
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if err != nil {
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t.Logf("stat error: %+v", err)
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return
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}
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t.Logf("fi: %+v", fi)
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t.Logf("isdir: %t", fi.IsDir())
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f, err := etcdFs.Create("/tmp/foo")
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if err != nil {
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t.Logf("error: %+v", err)
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return
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}
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t.Logf("handle: %+v", f)
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i, err := f.WriteString("hello world!\n")
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if err != nil {
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t.Logf("error: %+v", err)
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return
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}
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t.Logf("wrote: %d", i)
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if err := etcdFs.Mkdir("/tmp/d1", umask); err != nil {
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t.Logf("error: %+v", err)
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if err != etcdfs.ErrExist {
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return
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}
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}
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if err := etcdFs.Rename("/tmp/foo", "/tmp/bar"); err != nil {
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t.Logf("rename error: %+v", err)
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return
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}
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//f2, err := etcdFs.Create("/tmp/bar")
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//if err != nil {
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// t.Logf("error: %+v", err)
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// return
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//}
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//i2, err := f2.WriteString("hello bar!\n")
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//if err != nil {
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// t.Logf("error: %+v", err)
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// return
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//}
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//t.Logf("wrote: %d", i2)
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dir, err := etcdFs.Open("/tmp")
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if err != nil {
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t.Logf("error: %+v", err)
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return
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}
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names, err := dir.Readdirnames(-1)
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if err != nil && err != io.EOF {
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t.Logf("error: %+v", err)
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return
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}
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for _, name := range names {
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t.Logf("name in /tmp: %+v", name)
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}
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//dir, err := etcdFs.Open("/")
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//if err != nil {
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// t.Logf("error: %+v", err)
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// return
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//}
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//names, err := dir.Readdirnames(-1)
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//if err != nil && err != io.EOF {
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// t.Logf("error: %+v", err)
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// return
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//}
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//for _, name := range names {
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// t.Logf("name in /: %+v", name)
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//}
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}
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func TestFs2(t *testing.T) {
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etcdClient := &etcd.ClientEtcd{
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Seeds: []string{"localhost:2379"}, // endpoints
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}
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if err := etcdClient.Connect(); err != nil {
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t.Logf("client connection error: %+v", err)
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return
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}
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defer etcdClient.Destroy()
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etcdFs := &etcdfs.Fs{
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Client: etcdClient.GetClient(),
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Metadata: superblock,
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DataPrefix: etcdfs.DefaultDataPrefix,
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}
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tree, err := util.FsTree(etcdFs, "/")
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if err != nil {
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t.Errorf("tree error: %+v", err)
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return
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}
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t.Logf("tree: \n%s", tree)
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tree2, err := util.FsTree(etcdFs, "/tmp")
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if err != nil {
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t.Errorf("tree2 error: %+v", err)
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return
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}
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t.Logf("tree2: \n%s", tree2)
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}
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func TestFs3(t *testing.T) {
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etcdClient := &etcd.ClientEtcd{
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Seeds: []string{"localhost:2379"}, // endpoints
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}
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if err := etcdClient.Connect(); err != nil {
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t.Logf("client connection error: %+v", err)
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return
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}
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defer etcdClient.Destroy()
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etcdFs := &etcdfs.Fs{
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Client: etcdClient.GetClient(),
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Metadata: superblock,
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DataPrefix: etcdfs.DefaultDataPrefix,
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}
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tree, err := util.FsTree(etcdFs, "/")
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if err != nil {
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t.Errorf("tree error: %+v", err)
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return
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}
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t.Logf("tree: \n%s", tree)
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var memFs afero.Fs = afero.NewMemMapFs()
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if err := util.CopyFs(etcdFs, memFs, "/", "/", false); err != nil {
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t.Errorf("CopyFs error: %+v", err)
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return
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}
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if err := util.CopyFs(etcdFs, memFs, "/", "/", true); err != nil {
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t.Errorf("CopyFs2 error: %+v", err)
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return
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}
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if err := util.CopyFs(etcdFs, memFs, "/", "/tmp/d1/", false); err != nil {
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t.Errorf("CopyFs3 error: %+v", err)
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return
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}
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tree2, err := util.FsTree(memFs, "/")
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if err != nil {
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t.Errorf("tree2 error: %+v", err)
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return
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}
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t.Logf("tree2: \n%s", tree2)
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}
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