15397: Remove default_owner_uuid from docs/examples.

[arvados.git] / lib / config / load.go

diff --git a/lib/config/load.go b/lib/config/load.go
index dba799787045d732e3a07cb65859dc7bfa096c6d..00c8e286832f0f0c3a593c41cf08e919a054ad32 100644 (file)
--- a/lib/config/load.go
+++ b/lib/config/load.go
@@ -16,6 +16,7 @@ import (
        "io/ioutil"
        "os"
        "regexp"
+       "runtime"
        "strconv"
        "strings"
        "time"
@@ -25,6 +26,8 @@ import (
        "github.com/imdario/mergo"
        "github.com/prometheus/client_golang/prometheus"
        "github.com/sirupsen/logrus"
+       "golang.org/x/crypto/ssh"
+       "golang.org/x/sys/unix"
 )
 
 //go:embed config.default.yml
@@ -45,7 +48,6 @@ type Loader struct {
        CrunchDispatchSlurmPath string
        WebsocketPath           string
        KeepproxyPath           string
-       GitHttpdPath            string
        KeepBalancePath         string
 
        configdata []byte
@@ -85,7 +87,6 @@ func (ldr *Loader) SetupFlags(flagset *flag.FlagSet) {
                flagset.StringVar(&ldr.CrunchDispatchSlurmPath, "legacy-crunch-dispatch-slurm-config", defaultCrunchDispatchSlurmConfigPath, "Legacy crunch-dispatch-slurm configuration `file`")
                flagset.StringVar(&ldr.WebsocketPath, "legacy-ws-config", defaultWebsocketConfigPath, "Legacy arvados-ws configuration `file`")
                flagset.StringVar(&ldr.KeepproxyPath, "legacy-keepproxy-config", defaultKeepproxyConfigPath, "Legacy keepproxy configuration `file`")
-               flagset.StringVar(&ldr.GitHttpdPath, "legacy-git-httpd-config", defaultGitHttpdConfigPath, "Legacy arvados-git-httpd configuration `file`")
                flagset.StringVar(&ldr.KeepBalancePath, "legacy-keepbalance-config", defaultKeepBalanceConfigPath, "Legacy keep-balance configuration `file`")
                flagset.BoolVar(&ldr.SkipLegacy, "skip-legacy", false, "Don't load legacy config files")
        }
@@ -165,9 +166,6 @@ func (ldr *Loader) MungeLegacyConfigArgs(lgr logrus.FieldLogger, args []string,
        if legacyConfigArg != "-legacy-keepproxy-config" {
                ldr.KeepproxyPath = ""
        }
-       if legacyConfigArg != "-legacy-git-httpd-config" {
-               ldr.GitHttpdPath = ""
-       }
        if legacyConfigArg != "-legacy-keepbalance-config" {
                ldr.KeepBalancePath = ""
        }
@@ -293,11 +291,13 @@ func (ldr *Loader) Load() (*arvados.Config, error) {
                        ldr.loadOldCrunchDispatchSlurmConfig,
                        ldr.loadOldWebsocketConfig,
                        ldr.loadOldKeepproxyConfig,
-                       ldr.loadOldGitHttpdConfig,
                        ldr.loadOldKeepBalanceConfig,
                )
        }
-       loadFuncs = append(loadFuncs, ldr.setImplicitStorageClasses)
+       loadFuncs = append(loadFuncs,
+               ldr.setImplicitStorageClasses,
+               ldr.setLoopbackInstanceType,
+       )
        for _, f := range loadFuncs {
                err = f(&cfg)
                if err != nil {
@@ -362,7 +362,7 @@ func (ldr *Loader) checkClusterID(label, clusterID string, emptyStringOk bool) e
        if emptyStringOk && clusterID == "" {
                return nil
        } else if !acceptableClusterIDRe.MatchString(clusterID) {
-               return fmt.Errorf("%s: cluster ID should be 5 alphanumeric characters", label)
+               return fmt.Errorf("%s: cluster ID should be 5 lowercase alphanumeric characters", label)
        }
        return nil
 }
@@ -415,6 +415,68 @@ func (ldr *Loader) checkEnum(label, value string, accepted ...string) error {
        return fmt.Errorf("%s: unacceptable value %q: must be one of %q", label, value, accepted)
 }
 
+func (ldr *Loader) setLoopbackInstanceType(cfg *arvados.Config) error {
+       for id, cc := range cfg.Clusters {
+               if !cc.Containers.CloudVMs.Enable || cc.Containers.CloudVMs.Driver != "loopback" {
+                       continue
+               }
+               if len(cc.InstanceTypes) == 1 {
+                       continue
+               }
+               if len(cc.InstanceTypes) > 1 {
+                       return fmt.Errorf("Clusters.%s.InstanceTypes: cannot use multiple InstanceTypes with loopback driver", id)
+               }
+               // No InstanceTypes configured. Fill in implicit
+               // default.
+               hostram, err := getHostRAM()
+               if err != nil {
+                       return err
+               }
+               scratch, err := getFilesystemSize(os.TempDir())
+               if err != nil {
+                       return err
+               }
+               cc.InstanceTypes = arvados.InstanceTypeMap{"localhost": {
+                       Name:            "localhost",
+                       ProviderType:    "localhost",
+                       VCPUs:           runtime.NumCPU(),
+                       RAM:             hostram,
+                       Scratch:         scratch,
+                       IncludedScratch: scratch,
+                       Price:           1.0,
+               }}
+               cfg.Clusters[id] = cc
+       }
+       return nil
+}
+
+func getFilesystemSize(path string) (arvados.ByteSize, error) {
+       var stat unix.Statfs_t
+       err := unix.Statfs(path, &stat)
+       if err != nil {
+               return 0, err
+       }
+       return arvados.ByteSize(stat.Blocks * uint64(stat.Bsize)), nil
+}
+
+var reMemTotal = regexp.MustCompile(`(^|\n)MemTotal: *(\d+) kB\n`)
+
+func getHostRAM() (arvados.ByteSize, error) {
+       buf, err := os.ReadFile("/proc/meminfo")
+       if err != nil {
+               return 0, err
+       }
+       m := reMemTotal.FindSubmatch(buf)
+       if m == nil {
+               return 0, errors.New("error parsing /proc/meminfo: no MemTotal")
+       }
+       kb, err := strconv.ParseInt(string(m[2]), 10, 64)
+       if err != nil {
+               return 0, fmt.Errorf("error parsing /proc/meminfo: %q: %w", m[2], err)
+       }
+       return arvados.ByteSize(kb) * 1024, nil
+}
+
 func (ldr *Loader) setImplicitStorageClasses(cfg *arvados.Config) error {
 cluster:
        for id, cc := range cfg.Clusters {
@@ -623,3 +685,17 @@ func (ldr *Loader) RegisterMetrics(reg *prometheus.Registry) {
        vec.WithLabelValues(hash).Set(float64(ldr.loadTimestamp.UnixNano()) / 1e9)
        reg.MustRegister(vec)
 }
+
+// Load an SSH private key from the given confvalue, which is either
+// the literal key or an absolute path to a file containing the key.
+func LoadSSHKey(confvalue string) (ssh.Signer, error) {
+       if fnm := strings.TrimPrefix(confvalue, "file://"); fnm != confvalue && strings.HasPrefix(fnm, "/") {
+               keydata, err := os.ReadFile(fnm)
+               if err != nil {
+                       return nil, err
+               }
+               return ssh.ParsePrivateKey(keydata)
+       } else {
+               return ssh.ParsePrivateKey([]byte(confvalue))
+       }
+}