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authorbaude <bbaude@redhat.com>2019-01-02 14:56:19 -0600
committerbaude <bbaude@redhat.com>2019-01-07 12:43:57 -0600
commit41fb81d074f57bcf562e7dee78a78896e9a0bc64 (patch)
treecfb79058783d99bcfd58c1e8d46e70686c5ab834
parente796f522f6b74a9fef16976709e773f6395ef5e2 (diff)
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Add ability to build golang remote client
Add the ability to build a remote client in golang that uses all the same front-end cli code and output code. The initial limitations here are that it can only be a local client while the bridge and resolver code is being written for the golang varlink client. Tests and docs will be added in subsequent PRs. Signed-off-by: baude <bbaude@redhat.com>
-rw-r--r--Makefile3
-rw-r--r--cmd/podman/info.go12
-rw-r--r--libpod/adapter/client.go16
-rw-r--r--libpod/adapter/info_remote.go56
-rw-r--r--libpod/adapter/runtime.go26
-rw-r--r--libpod/adapter/runtime_remote.go28
-rw-r--r--pkg/varlinkapi/system.go1
7 files changed, 136 insertions, 6 deletions
diff --git a/Makefile b/Makefile
index c423d82f2..316815f00 100644
--- a/Makefile
+++ b/Makefile
@@ -111,6 +111,9 @@ test/goecho/goecho: .gopathok $(wildcard test/goecho/*.go)
podman: .gopathok $(PODMAN_VARLINK_DEPENDENCIES)
$(GO) build -ldflags '$(LDFLAGS_PODMAN)' -tags "$(BUILDTAGS)" -o bin/$@ $(PROJECT)/cmd/podman
+podman-remote: .gopathok $(PODMAN_VARLINK_DEPENDENCIES)
+ $(GO) build -ldflags '$(LDFLAGS_PODMAN)' -tags "$(BUILDTAGS) remoteclient" -o bin/$@ $(PROJECT)/cmd/podman
+
local-cross: $(CROSS_BUILD_TARGETS)
bin/podman.cross.%: .gopathok
diff --git a/cmd/podman/info.go b/cmd/podman/info.go
index c0639725e..4b80f94db 100644
--- a/cmd/podman/info.go
+++ b/cmd/podman/info.go
@@ -1,10 +1,10 @@
package main
import (
+ "github.com/containers/libpod/libpod/adapter"
"runtime"
"github.com/containers/libpod/cmd/podman/formats"
- "github.com/containers/libpod/cmd/podman/libpodruntime"
"github.com/containers/libpod/libpod"
"github.com/pkg/errors"
"github.com/urfave/cli"
@@ -39,18 +39,20 @@ func infoCmd(c *cli.Context) error {
}
info := map[string]interface{}{}
- runtime, err := libpodruntime.GetRuntime(c)
+ localRuntime, err := adapter.GetRuntime(c)
if err != nil {
return errors.Wrapf(err, "could not get runtime")
}
- defer runtime.Shutdown(false)
+ defer localRuntime.Runtime.Shutdown(false)
- infoArr, err := runtime.Info()
+ infoArr, err := localRuntime.Runtime.Info()
if err != nil {
return errors.Wrapf(err, "error getting info")
}
- if c.Bool("debug") {
+ // TODO This is no a problem child because we don't know if we should add information
+ // TODO about the client or the backend. Only do for traditional podman for now.
+ if !localRuntime.Remote && c.Bool("debug") {
debugInfo := debugInfo(c)
infoArr = append(infoArr, libpod.InfoData{Type: "debug", Data: debugInfo})
}
diff --git a/libpod/adapter/client.go b/libpod/adapter/client.go
new file mode 100644
index 000000000..383c242c9
--- /dev/null
+++ b/libpod/adapter/client.go
@@ -0,0 +1,16 @@
+// +build remoteclient
+
+package adapter
+
+import (
+ "github.com/varlink/go/varlink"
+)
+
+// Connect provides a varlink connection
+func (r RemoteRuntime) Connect() (*varlink.Connection, error) {
+ connection, err := varlink.NewConnection("unix:/run/podman/io.podman")
+ if err != nil {
+ return nil, err
+ }
+ return connection, nil
+}
diff --git a/libpod/adapter/info_remote.go b/libpod/adapter/info_remote.go
new file mode 100644
index 000000000..3b691ed17
--- /dev/null
+++ b/libpod/adapter/info_remote.go
@@ -0,0 +1,56 @@
+// +build remoteclient
+
+package adapter
+
+import (
+ "encoding/json"
+
+ "github.com/containers/libpod/cmd/podman/varlink"
+ "github.com/containers/libpod/libpod"
+)
+
+// Info returns information for the host system and its components
+func (r RemoteRuntime) Info() ([]libpod.InfoData, error) {
+ // TODO the varlink implementation for info should be updated to match the output for regular info
+ var (
+ reply []libpod.InfoData
+ hostInfo map[string]interface{}
+ store map[string]interface{}
+ )
+
+ registries := make(map[string]interface{})
+ insecureRegistries := make(map[string]interface{})
+ conn, err := r.Connect()
+ if err != nil {
+ return nil, err
+ }
+ defer conn.Close()
+ info, err := iopodman.GetInfo().Call(conn)
+ if err != nil {
+ return nil, err
+ }
+
+ // info.host -> map[string]interface{}
+ h, err := json.Marshal(info.Host)
+ if err != nil {
+ return nil, err
+ }
+ json.Unmarshal(h, &hostInfo)
+
+ // info.store -> map[string]interface{}
+ s, err := json.Marshal(info.Store)
+ if err != nil {
+ return nil, err
+ }
+ json.Unmarshal(s, &store)
+
+ registries["registries"] = info.Registries
+ insecureRegistries["registries"] = info.Insecure_registries
+
+ // Add everything to the reply
+ reply = append(reply, libpod.InfoData{Type: "host", Data: hostInfo})
+ reply = append(reply, libpod.InfoData{Type: "registries", Data: registries})
+ reply = append(reply, libpod.InfoData{Type: "insecure registries", Data: insecureRegistries})
+ reply = append(reply, libpod.InfoData{Type: "store", Data: store})
+ return reply, nil
+}
diff --git a/libpod/adapter/runtime.go b/libpod/adapter/runtime.go
new file mode 100644
index 000000000..b6db51071
--- /dev/null
+++ b/libpod/adapter/runtime.go
@@ -0,0 +1,26 @@
+// +build !remoteclient
+
+package adapter
+
+import (
+ "github.com/containers/libpod/cmd/podman/libpodruntime"
+ "github.com/containers/libpod/libpod"
+ "github.com/urfave/cli"
+)
+
+// LocalRuntime describes a typical libpod runtime
+type LocalRuntime struct {
+ Runtime *libpod.Runtime
+ Remote bool
+}
+
+// GetRuntime returns a LocalRuntime struct with the actual runtime embedded in it
+func GetRuntime(c *cli.Context) (*LocalRuntime, error) {
+ runtime, err := libpodruntime.GetRuntime(c)
+ if err != nil {
+ return nil, err
+ }
+ return &LocalRuntime{
+ Runtime: runtime,
+ }, nil
+}
diff --git a/libpod/adapter/runtime_remote.go b/libpod/adapter/runtime_remote.go
new file mode 100644
index 000000000..715728d21
--- /dev/null
+++ b/libpod/adapter/runtime_remote.go
@@ -0,0 +1,28 @@
+// +build remoteclient
+
+package adapter
+
+import "github.com/urfave/cli"
+
+// RemoteRuntime describes a wrapper runtime struct
+type RemoteRuntime struct{}
+
+// LocalRuntime describes a typical libpod runtime
+type LocalRuntime struct {
+ Runtime *RemoteRuntime
+ Remote bool
+}
+
+// GetRuntime returns a LocalRuntime struct with the actual runtime embedded in it
+func GetRuntime(c *cli.Context) (*LocalRuntime, error) {
+ runtime := RemoteRuntime{}
+ return &LocalRuntime{
+ Runtime: &runtime,
+ Remote: true,
+ }, nil
+}
+
+// Shutdown is a bogus wrapper for compat with the libpod runtime
+func (r RemoteRuntime) Shutdown(force bool) error {
+ return nil
+}
diff --git a/pkg/varlinkapi/system.go b/pkg/varlinkapi/system.go
index a29d22e7d..e50643dd0 100644
--- a/pkg/varlinkapi/system.go
+++ b/pkg/varlinkapi/system.go
@@ -102,6 +102,5 @@ func (i *LibpodAPI) GetInfo(call iopodman.VarlinkCall) error {
podmanInfo.Podman = pmaninfo
podmanInfo.Registries = registries
podmanInfo.Insecure_registries = insecureRegistries
-
return call.ReplyGetInfo(podmanInfo)
}