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lang: Initial implementation of the mgmt language

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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
2018-01-20 08:09:29 -05:00
parent 1c8c0b2915
commit b19583e7d3
237 changed files with 25256 additions and 743 deletions
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15
resources/virt.go
View File

@@ -31,6 +31,8 @@ import (
"sync"
"time"
"github.com/purpleidea/mgmt/util"
multierr "github.com/hashicorp/go-multierror"
"github.com/libvirt/libvirt-go"
libvirtxml "github.com/libvirt/libvirt-go-xml"
@@ -999,7 +1001,7 @@ func (d *diskDevice) GetXML(idx int) string {
b += "<disk type='file' device='disk'>"
b += fmt.Sprintf("<driver name='qemu' type='%s'/>", d.Type)
b += fmt.Sprintf("<source file='%s'/>", source)
b += fmt.Sprintf("<target dev='vd%s' bus='virtio'/>", numToAlpha(idx))
b += fmt.Sprintf("<target dev='vd%s' bus='virtio'/>", util.NumToAlpha(idx))
b += "</disk>"
return b
}
@@ -1010,7 +1012,7 @@ func (d *cdRomDevice) GetXML(idx int) string {
b += "<disk type='file' device='cdrom'>"
b += fmt.Sprintf("<driver name='qemu' type='%s'/>", d.Type)
b += fmt.Sprintf("<source file='%s'/>", source)
b += fmt.Sprintf("<target dev='hd%s' bus='ide'/>", numToAlpha(idx))
b += fmt.Sprintf("<target dev='hd%s' bus='ide'/>", util.NumToAlpha(idx))
b += "<readonly/>"
b += "</disk>"
return b
@@ -1196,12 +1198,3 @@ func expandHome(p string) (string, error) {
return p, nil
}
func numToAlpha(idx int) string {
var mod = idx % 26
var div = idx / 26
if div > 0 {
return numToAlpha(div-1) + string(rune(mod+int('a')))
}
return string(rune(mod + int('a')))
}