Initial Commit

.dockerignore

+./bin
+./.vagrant
+./.dapper
+./data-dir
+./dist
+./.trash-cache
+./image/root
+./image/agent
+./image/go_build_agent
+./image/main.squashfs

.drone.yml

+---
+pipeline:
+  build:
+    privileged: true
+    image: rancher/dapper:1.11.2
+    volumes:
+    - /var/run/docker.sock:/var/run/docker.sock
+    commands:
+    - dapper ci
+
+  stage-binaries:
+    image: rancher/dapper:1.11.2
+    commands:
+    - cp -f ./bin/rio-incluster ./package/rio
+    when:
+      branch: master
+      event: tag
+
+  publish-image:
+    image: plugins/docker
+    dockerfile: package/Dockerfile
+    repo: rancher/rio
+    context: package/
+    tag: ${DRONE_TAG}
+    secrets: [docker_username, docker_password]
+    when:
+      branch: master
+      event: tag
+
+  github_binary_prerelease:
+    image: plugins/github-release
+    prerelease: true
+    files:
+     - dist/artifacts/*
+    checksum:
+     - sha256
+    secrets: [github_token]
+    when:
+      branch: master
+      event: tag
+      ref:
+        include: [ refs/tags/*rc* ]
+
+  github_binary_release:
+    image: plugins/github-release
+    files:
+     - dist/artifacts/*
+    checksum:
+     - sha256
+    secrets: [github_token]
+    when:
+      branch: master
+      event: tag
+      ref:
+        exclude: [ refs/tags/*rc* ]

.gitignore

+*.swp
+/.dapper
+/.idea
+/.trash-cache
+/.vagrant
+/*.log
+/bin
+/build
+/data-dir
+/dist
+/image/root
+/image/agent
+/image/go_build_agent
+/image/main.squashfs
+/package/rio
+__pycache__
+/tests/.pytest_cache/
+/tests/.tox/
+/tests/.vscode
+

.gometalinter.json

+{
+  "EnableAll": false,
+  "Enable": [
+    "golint",
+    "goimports",
+    "misspell",
+    "ineffassign",
+    "errcheck"
+  ],
+  "Deadline": "1m"
+}
\ No newline at end of file

Dockerfile.dapper

+FROM golang:1.11-alpine3.8
+
+RUN apk -U --no-cache add bash git gcc musl-dev docker vim less file curl wget ca-certificates jq linux-headers zlib-dev tar zip squashfs-tools npm coreutils \
+    python3 py3-pip python3-dev openssl-dev libffi-dev
+RUN pip3 install 'tox==3.6.0'
+RUN npm install -g 'bats@1.1.0'
+RUN apk -U --no-cache --repository http://dl-3.alpinelinux.org/alpine/edge/main/ add sqlite-dev sqlite-static
+RUN go get -d golang.org/x/lint/golint && \
+    git -C /go/src/golang.org/x/lint/golint checkout -b current 06c8688daad7faa9da5a0c2f163a3d14aac986ca && \
+    go install golang.org/x/lint/golint && \
+    rm -rf /go/src /go/pkg
+RUN go get -d github.com/alecthomas/gometalinter && \
+    git -C /go/src/github.com/alecthomas/gometalinter checkout -b current v2.0.11 && \
+    go install github.com/alecthomas/gometalinter && \
+    gometalinter --install && \
+    rm -rf /go/src /go/pkg
+
+ENV DAPPER_RUN_ARGS --privileged
+ENV DAPPER_ENV REPO TAG DRONE_TAG
+ENV DAPPER_SOURCE /go/src/github.com/rancher/rio/
+ENV DAPPER_OUTPUT ./bin ./dist
+ENV DAPPER_DOCKER_SOCKET true
+ENV HOME ${DAPPER_SOURCE}
+ENV CROSS true
+WORKDIR ${DAPPER_SOURCE}
+
+ENTRYPOINT ["./scripts/entry"]
+CMD ["ci"]
+

LICENSE

+
+                                 Apache License
+                           Version 2.0, January 2004
+                        http://www.apache.org/licenses/
+
+   TERMS AND CONDITIONS FOR USE, REPRODUCTION, AND DISTRIBUTION
+
+   1. Definitions.
+
+      "License" shall mean the terms and conditions for use, reproduction,
+      and distribution as defined by Sections 1 through 9 of this document.
+
+      "Licensor" shall mean the copyright owner or entity authorized by
+      the copyright owner that is granting the License.
+
+      "Legal Entity" shall mean the union of the acting entity and all
+      other entities that control, are controlled by, or are under common
+      control with that entity. For the purposes of this definition,
+      "control" means (i) the power, direct or indirect, to cause the
+      direction or management of such entity, whether by contract or
+      otherwise, or (ii) ownership of fifty percent (50%) or more of the
+      outstanding shares, or (iii) beneficial ownership of such entity.
+
+      "You" (or "Your") shall mean an individual or Legal Entity
+      exercising permissions granted by this License.
+
+      "Source" form shall mean the preferred form for making modifications,
+      including but not limited to software source code, documentation
+      source, and configuration files.
+
+      "Object" form shall mean any form resulting from mechanical
+      transformation or translation of a Source form, including but
+      not limited to compiled object code, generated documentation,
+      and conversions to other media types.
+
+      "Work" shall mean the work of authorship, whether in Source or
+      Object form, made available under the License, as indicated by a
+      copyright notice that is included in or attached to the work
+      (an example is provided in the Appendix below).
+
+      "Derivative Works" shall mean any work, whether in Source or Object
+      form, that is based on (or derived from) the Work and for which the
+      editorial revisions, annotations, elaborations, or other modifications
+      represent, as a whole, an original work of authorship. For the purposes
+      of this License, Derivative Works shall not include works that remain
+      separable from, or merely link (or bind by name) to the interfaces of,
+      the Work and Derivative Works thereof.
+
+      "Contribution" shall mean any work of authorship, including
+      the original version of the Work and any modifications or additions
+      to that Work or Derivative Works thereof, that is intentionally
+      submitted to Licensor for inclusion in the Work by the copyright owner
+      or by an individual or Legal Entity authorized to submit on behalf of
+      the copyright owner. For the purposes of this definition, "submitted"
+      means any form of electronic, verbal, or written communication sent
+      to the Licensor or its representatives, including but not limited to
+      communication on electronic mailing lists, source code control systems,
+      and issue tracking systems that are managed by, or on behalf of, the
+      Licensor for the purpose of discussing and improving the Work, but
+      excluding communication that is conspicuously marked or otherwise
+      designated in writing by the copyright owner as "Not a Contribution."
+
+      "Contributor" shall mean Licensor and any individual or Legal Entity
+      on behalf of whom a Contribution has been received by Licensor and
+      subsequently incorporated within the Work.
+
+   2. Grant of Copyright License. Subject to the terms and conditions of
+      this License, each Contributor hereby grants to You a perpetual,
+      worldwide, non-exclusive, no-charge, royalty-free, irrevocable
+      copyright license to reproduce, prepare Derivative Works of,
+      publicly display, publicly perform, sublicense, and distribute the
+      Work and such Derivative Works in Source or Object form.
+
+   3. Grant of Patent License. Subject to the terms and conditions of
+      this License, each Contributor hereby grants to You a perpetual,
+      worldwide, non-exclusive, no-charge, royalty-free, irrevocable
+      (except as stated in this section) patent license to make, have made,
+      use, offer to sell, sell, import, and otherwise transfer the Work,
+      where such license applies only to those patent claims licensable
+      by such Contributor that are necessarily infringed by their
+      Contribution(s) alone or by combination of their Contribution(s)
+      with the Work to which such Contribution(s) was submitted. If You
+      institute patent litigation against any entity (including a
+      cross-claim or counterclaim in a lawsuit) alleging that the Work
+      or a Contribution incorporated within the Work constitutes direct
+      or contributory patent infringement, then any patent licenses
+      granted to You under this License for that Work shall terminate
+      as of the date such litigation is filed.
+
+   4. Redistribution. You may reproduce and distribute copies of the
+      Work or Derivative Works thereof in any medium, with or without
+      modifications, and in Source or Object form, provided that You
+      meet the following conditions:
+
+      (a) You must give any other recipients of the Work or
+          Derivative Works a copy of this License; and
+
+      (b) You must cause any modified files to carry prominent notices
+          stating that You changed the files; and
+
+      (c) You must retain, in the Source form of any Derivative Works
+          that You distribute, all copyright, patent, trademark, and
+          attribution notices from the Source form of the Work,
+          excluding those notices that do not pertain to any part of
+          the Derivative Works; and
+
+      (d) If the Work includes a "NOTICE" text file as part of its
+          distribution, then any Derivative Works that You distribute must
+          include a readable copy of the attribution notices contained
+          within such NOTICE file, excluding those notices that do not
+          pertain to any part of the Derivative Works, in at least one
+          of the following places: within a NOTICE text file distributed
+          as part of the Derivative Works; within the Source form or
+          documentation, if provided along with the Derivative Works; or,
+          within a display generated by the Derivative Works, if and
+          wherever such third-party notices normally appear. The contents
+          of the NOTICE file are for informational purposes only and
+          do not modify the License. You may add Your own attribution
+          notices within Derivative Works that You distribute, alongside
+          or as an addendum to the NOTICE text from the Work, provided
+          that such additional attribution notices cannot be construed
+          as modifying the License.
+
+      You may add Your own copyright statement to Your modifications and
+      may provide additional or different license terms and conditions
+      for use, reproduction, or distribution of Your modifications, or
+      for any such Derivative Works as a whole, provided Your use,
+      reproduction, and distribution of the Work otherwise complies with
+      the conditions stated in this License.
+
+   5. Submission of Contributions. Unless You explicitly state otherwise,
+      any Contribution intentionally submitted for inclusion in the Work
+      by You to the Licensor shall be under the terms and conditions of
+      this License, without any additional terms or conditions.
+      Notwithstanding the above, nothing herein shall supersede or modify
+      the terms of any separate license agreement you may have executed
+      with Licensor regarding such Contributions.
+
+   6. Trademarks. This License does not grant permission to use the trade
+      names, trademarks, service marks, or product names of the Licensor,
+      except as required for reasonable and customary use in describing the
+      origin of the Work and reproducing the content of the NOTICE file.
+
+   7. Disclaimer of Warranty. Unless required by applicable law or
+      agreed to in writing, Licensor provides the Work (and each
+      Contributor provides its Contributions) on an "AS IS" BASIS,
+      WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or
+      implied, including, without limitation, any warranties or conditions
+      of TITLE, NON-INFRINGEMENT, MERCHANTABILITY, or FITNESS FOR A
+      PARTICULAR PURPOSE. You are solely responsible for determining the
+      appropriateness of using or redistributing the Work and assume any
+      risks associated with Your exercise of permissions under this License.
+
+   8. Limitation of Liability. In no event and under no legal theory,
+      whether in tort (including negligence), contract, or otherwise,
+      unless required by applicable law (such as deliberate and grossly
+      negligent acts) or agreed to in writing, shall any Contributor be
+      liable to You for damages, including any direct, indirect, special,
+      incidental, or consequential damages of any character arising as a
+      result of this License or out of the use or inability to use the
+      Work (including but not limited to damages for loss of goodwill,
+      work stoppage, computer failure or malfunction, or any and all
+      other commercial damages or losses), even if such Contributor
+      has been advised of the possibility of such damages.
+
+   9. Accepting Warranty or Additional Liability. While redistributing
+      the Work or Derivative Works thereof, You may choose to offer,
+      and charge a fee for, acceptance of support, warranty, indemnity,
+      or other liability obligations and/or rights consistent with this
+      License. However, in accepting such obligations, You may act only
+      on Your own behalf and on Your sole responsibility, not on behalf
+      of any other Contributor, and only if You agree to indemnify,
+      defend, and hold each Contributor harmless for any liability
+      incurred by, or claims asserted against, such Contributor by reason
+      of your accepting any such warranty or additional liability.
+
+   END OF TERMS AND CONDITIONS

Makefile

+TARGETS := $(shell ls scripts)
+
+.dapper:
+	@echo Downloading dapper
+	@curl -sL https://releases.rancher.com/dapper/latest/dapper-`uname -s`-`uname -m` > .dapper.tmp
+	@@chmod +x .dapper.tmp
+	@./.dapper.tmp -v
+	@mv .dapper.tmp .dapper
+
+$(TARGETS): .dapper
+	./.dapper $@
+
+trash: .dapper
+	./.dapper -m bind trash
+
+trash-keep: .dapper
+	./.dapper -m bind trash -k
+
+deps: trash
+
+.DEFAULT_GOAL := ci
+
+.PHONY: $(TARGETS)

agent/config/config.go

+package config
+
+import (
+	"crypto/md5"
+	"crypto/tls"
+	"encoding/hex"
+	"encoding/pem"
+	"fmt"
+	"io/ioutil"
+	"net/url"
+	"os"
+	"path/filepath"
+	"strings"
+	"time"
+
+	"github.com/pkg/errors"
+	"github.com/rancher/norman/pkg/clientaccess"
+	"github.com/rancher/rio/pkg/daemons/config"
+	"github.com/sirupsen/logrus"
+	"k8s.io/apimachinery/pkg/util/json"
+	net2 "k8s.io/apimachinery/pkg/util/net"
+	"k8s.io/client-go/util/cert"
+)
+
+type envInfo struct {
+	ServerURL string
+	Token     string
+	DataDir   string
+	NodeIP    string
+	NodeName  string
+}
+
+func Get() *config.Node {
+	for {
+		agentConfig, err := get()
+		if err != nil {
+			logrus.Error(err)
+			time.Sleep(5 * time.Second)
+			continue
+		}
+		return agentConfig
+	}
+}
+
+func getEnvInfo() (*envInfo, error) {
+	u := os.Getenv("K3S_URL")
+	if u == "" {
+		return nil, fmt.Errorf("K3S_URL env var is required")
+	}
+
+	_, err := url.Parse(u)
+	if err != nil {
+		return nil, fmt.Errorf("K3S_URL [%s] is invalid: %v", u, err)
+	}
+
+	t := os.Getenv("K3S_TOKEN")
+	if t == "" {
+		return nil, fmt.Errorf("K3S_TOKEN env var is required")
+	}
+
+	dataDir := os.Getenv("K3S_DATA_DIR")
+	if dataDir == "" {
+		return nil, fmt.Errorf("K3S_DATA_DIR is required")
+	}
+
+	return &envInfo{
+		ServerURL: u,
+		Token:     t,
+		DataDir:   dataDir,
+		NodeIP:    os.Getenv("K3S_NODE_IP"),
+		NodeName:  os.Getenv("NODE_NAME"),
+	}, nil
+}
+
+func getNodeCert(info *clientaccess.Info) (*tls.Certificate, error) {
+	nodeCert, err := clientaccess.Get("/v1-k3s/node.cert", info)
+	if err != nil {
+		return nil, err
+	}
+
+	nodeKey, err := clientaccess.Get("/v1-k3s/node.key", info)
+	if err != nil {
+		return nil, err
+	}
+
+	cert, err := tls.X509KeyPair(nodeCert, nodeKey)
+	if err != nil {
+		return nil, err
+	}
+	return &cert, nil
+}
+
+func writeNodeCA(dataDir string, nodeCert *tls.Certificate) (string, error) {
+	clientCABytes := pem.EncodeToMemory(&pem.Block{
+		Type:  "CERTIFICATE",
+		Bytes: nodeCert.Certificate[1],
+	})
+
+	clientCA := filepath.Join(dataDir, "client-ca.pem")
+	if err := ioutil.WriteFile(clientCA, clientCABytes, 0600); err != nil {
+		return "", errors.Wrapf(err, "failed to write client CA")
+	}
+
+	return clientCA, nil
+}
+
+func getHostnameAndIP(info envInfo) (string, string, error) {
+	ip := info.NodeIP
+	if ip == "" {
+		hostIP, err := net2.ChooseHostInterface()
+		if err != nil {
+			return "", "", err
+		}
+		ip = hostIP.String()
+	}
+
+	name := info.NodeName
+	if name == "" {
+		hostname, err := os.Hostname()
+		if err != nil {
+			return "", "", err
+		}
+		hostname = strings.Split(hostname, ".")[0]
+
+		d := md5.Sum([]byte(ip))
+		name = hostname + "-" + hex.EncodeToString(d[:])[:8]
+	}
+
+	return name, ip, nil
+}
+
+func localAddress(controlConfig *config.Control) string {
+	return fmt.Sprintf("127.0.0.1:%d", controlConfig.AdvertisePort)
+}
+
+func writeKubeConfig(envInfo *envInfo, info clientaccess.Info, controlConfig *config.Control, nodeCert *tls.Certificate) (string, error) {
+	os.MkdirAll(envInfo.DataDir, 0700)
+	kubeConfigPath := filepath.Join(envInfo.DataDir, "kubeconfig.yaml")
+
+	info.URL = "https://" + localAddress(controlConfig)
+	info.CACerts = pem.EncodeToMemory(&pem.Block{
+		Type:  cert.CertificateBlockType,
+		Bytes: nodeCert.Certificate[1],
+	})
+
+	return kubeConfigPath, info.WriteKubeConfig(kubeConfigPath)
+}
+
+func get() (*config.Node, error) {
+	envInfo, err := getEnvInfo()
+	if err != nil {
+		return nil, err
+	}
+
+	serverURLParsed, err := url.Parse(envInfo.ServerURL)
+	if err != nil {
+		return nil, err
+	}
+
+	info, err := clientaccess.ParseAndValidateToken(envInfo.ServerURL, envInfo.Token)
+	if err != nil {
+		return nil, err
+	}
+
+	controlConfig, err := getConfig(info)
+	if err != nil {
+		return nil, err
+	}
+
+	nodeCert, err := getNodeCert(info)
+	if err != nil {
+		return nil, err
+	}
+
+	clientCA, err := writeNodeCA(envInfo.DataDir, nodeCert)
+	if err != nil {
+		return nil, err
+	}
+
+	nodeName, nodeIP, err := getHostnameAndIP(*envInfo)
+	if err != nil {
+		return nil, err
+	}
+
+	kubeConfig, err := writeKubeConfig(envInfo, *info, controlConfig, nodeCert)
+	if err != nil {
+		return nil, err
+	}
+
+	nodeConfig := &controlConfig.NodeConfig
+	nodeConfig.LocalAddress = localAddress(controlConfig)
+	nodeConfig.AgentConfig.NodeIP = defString(nodeConfig.AgentConfig.NodeIP, nodeIP)
+	nodeConfig.AgentConfig.NodeName = defString(nodeConfig.AgentConfig.NodeName, nodeName)
+	nodeConfig.AgentConfig.CNIBinDir = defString(nodeConfig.AgentConfig.CNIBinDir, "/usr/share/cni")
+	nodeConfig.AgentConfig.CACertPath = clientCA
+	nodeConfig.AgentConfig.ListenAddress = defString(nodeConfig.AgentConfig.ListenAddress, "127.0.0.1")
+	nodeConfig.AgentConfig.KubeConfig = kubeConfig
+	nodeConfig.CACerts = info.CACerts
+	nodeConfig.ServerAddress = serverURLParsed.Host
+	nodeConfig.Certificate = nodeCert
+	if !nodeConfig.Docker {
+		nodeConfig.AgentConfig.RuntimeSocket = "/run/k3s/containerd.sock"
+	}
+
+	return nodeConfig, nil
+}
+
+func defString(val, newVal string) string {
+	if val == "" {
+		return newVal
+	}
+	return val
+}
+
+func getConfig(info *clientaccess.Info) (*config.Control, error) {
+	data, err := clientaccess.Get("/v1-k3s/config", info)
+	if err != nil {
+		return nil, err
+	}
+
+	controlControl := &config.Control{}
+	return controlControl, json.Unmarshal(data, controlControl)
+}

agent/containerd/containerd.go

+package containerd
+
+import (
+	"context"
+	"fmt"
+	"os"
+	"os/exec"
+	"strings"
+	"syscall"
+	"time"
+
+	"github.com/rancher/rio/agent/config"
+	util2 "github.com/rancher/rio/agent/util"
+	"github.com/sirupsen/logrus"
+	"google.golang.org/grpc"
+	runtimeapi "k8s.io/kubernetes/pkg/kubelet/apis/cri/runtime/v1alpha2"
+	"k8s.io/kubernetes/pkg/kubelet/util"
+)
+
+const (
+	address    = "/run/k3s/containerd.sock"
+	maxMsgSize = 1024 * 1024 * 16
+	configToml = `[plugins.cri]
+  stream_server_address = "%NODE%"
+  stream_server_port = "10010"
+  [plugins.cri.cni]
+    bin_dir = "/usr/share/cni/bin"
+    conf_dir = "/etc/cni/net.d"
+`
+)
+
+func Run(ctx context.Context, config *config.NodeConfig) error {
+	args := []string{
+		"containerd",
+		"-a", address,
+		"--state", "/run/k3s/containerd",
+	}
+
+	if err := util2.WriteFile("/etc/containerd/config.toml",
+		strings.Replace(configToml, "%NODE%", config.AgentConfig.NodeName, -1)); err != nil {
+		return err
+	}
+
+	if logrus.GetLevel() >= logrus.DebugLevel {
+		args = append(args, "--verbose")
+	}
+
+	go func() {
+		cmd := exec.Command(args[0], args[1:]...)
+		cmd.Stdout = os.Stdout
+		cmd.Stderr = os.Stderr
+		cmd.SysProcAttr = &syscall.SysProcAttr{
+			Pdeathsig: syscall.SIGKILL,
+		}
+		if err := cmd.Run(); err != nil {
+			fmt.Fprintf(os.Stderr, "containerd: %s\n", err)