06b397912b
Updates the spec and plugins to return an array of interfaces and IP details to the runtime including: - interface names and MAC addresses configured by the plugin - whether the interfaces are sandboxed (container/VM) or host (bridge, veth, etc) - multiple IP addresses configured by IPAM and which interface they have been assigned to Returning interface details is useful for runtimes, as well as allowing more flexible chaining of CNI plugins themselves. For example, some meta plugins may need to know the host-side interface to be able to apply firewall or traffic shaping rules to the container.
124 lines
3.4 KiB
Go
124 lines
3.4 KiB
Go
// Copyright 2016 CNI authors
|
|
//
|
|
// 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.
|
|
|
|
package invoke_test
|
|
|
|
import (
|
|
"bytes"
|
|
"io/ioutil"
|
|
"os"
|
|
|
|
"github.com/containernetworking/cni/pkg/invoke"
|
|
|
|
noop_debug "github.com/containernetworking/cni/plugins/test/noop/debug"
|
|
|
|
. "github.com/onsi/ginkgo"
|
|
. "github.com/onsi/gomega"
|
|
)
|
|
|
|
var _ = Describe("RawExec", func() {
|
|
var (
|
|
debugFileName string
|
|
debug *noop_debug.Debug
|
|
environ []string
|
|
stdin []byte
|
|
execer *invoke.RawExec
|
|
)
|
|
|
|
const reportResult = `{ "some": "result" }`
|
|
|
|
BeforeEach(func() {
|
|
debugFile, err := ioutil.TempFile("", "cni_debug")
|
|
Expect(err).NotTo(HaveOccurred())
|
|
Expect(debugFile.Close()).To(Succeed())
|
|
debugFileName = debugFile.Name()
|
|
|
|
debug = &noop_debug.Debug{
|
|
ReportResult: reportResult,
|
|
ReportStderr: "some stderr message",
|
|
}
|
|
Expect(debug.WriteDebug(debugFileName)).To(Succeed())
|
|
|
|
environ = []string{
|
|
"CNI_COMMAND=ADD",
|
|
"CNI_CONTAINERID=some-container-id",
|
|
"CNI_ARGS=DEBUG=" + debugFileName,
|
|
"CNI_NETNS=/some/netns/path",
|
|
"CNI_PATH=/some/bin/path",
|
|
"CNI_IFNAME=some-eth0",
|
|
}
|
|
stdin = []byte(`{"some":"stdin-json", "cniVersion": "0.3.0"}`)
|
|
execer = &invoke.RawExec{}
|
|
})
|
|
|
|
AfterEach(func() {
|
|
Expect(os.Remove(debugFileName)).To(Succeed())
|
|
})
|
|
|
|
It("runs the plugin with the given stdin and environment", func() {
|
|
_, err := execer.ExecPlugin(pathToPlugin, stdin, environ)
|
|
Expect(err).NotTo(HaveOccurred())
|
|
|
|
debug, err := noop_debug.ReadDebug(debugFileName)
|
|
Expect(err).NotTo(HaveOccurred())
|
|
Expect(debug.Command).To(Equal("ADD"))
|
|
Expect(debug.CmdArgs.StdinData).To(Equal(stdin))
|
|
Expect(debug.CmdArgs.Netns).To(Equal("/some/netns/path"))
|
|
})
|
|
|
|
It("returns the resulting stdout as bytes", func() {
|
|
resultBytes, err := execer.ExecPlugin(pathToPlugin, stdin, environ)
|
|
Expect(err).NotTo(HaveOccurred())
|
|
|
|
Expect(resultBytes).To(BeEquivalentTo(reportResult))
|
|
})
|
|
|
|
Context("when the Stderr writer is set", func() {
|
|
var stderrBuffer *bytes.Buffer
|
|
|
|
BeforeEach(func() {
|
|
stderrBuffer = &bytes.Buffer{}
|
|
execer.Stderr = stderrBuffer
|
|
})
|
|
|
|
It("forwards any stderr bytes to the Stderr writer", func() {
|
|
_, err := execer.ExecPlugin(pathToPlugin, stdin, environ)
|
|
Expect(err).NotTo(HaveOccurred())
|
|
|
|
Expect(stderrBuffer.String()).To(Equal("some stderr message"))
|
|
})
|
|
})
|
|
|
|
Context("when the plugin errors", func() {
|
|
BeforeEach(func() {
|
|
debug.ReportError = "banana"
|
|
Expect(debug.WriteDebug(debugFileName)).To(Succeed())
|
|
})
|
|
|
|
It("wraps and returns the error", func() {
|
|
_, err := execer.ExecPlugin(pathToPlugin, stdin, environ)
|
|
Expect(err).To(HaveOccurred())
|
|
Expect(err).To(MatchError("banana"))
|
|
})
|
|
})
|
|
|
|
Context("when the system is unable to execute the plugin", func() {
|
|
It("returns the error", func() {
|
|
_, err := execer.ExecPlugin("/tmp/some/invalid/plugin/path", stdin, environ)
|
|
Expect(err).To(HaveOccurred())
|
|
Expect(err).To(MatchError(ContainSubstring("/tmp/some/invalid/plugin/path")))
|
|
})
|
|
})
|
|
})
|