drivers: restore port_map old json support
This ensures that `port_map` along with other block like attribute
declarations (e.g. ulimit, labels, etc) can handle various hcl and json
syntax that was supported in 0.8.
In 0.8.7, the following declarations are effectively equivalent:
```
// hcl block
port_map {
http = 80
https = 443
}
// hcl assignment
port_map = {
http = 80
https = 443
}
// json single element array of map (default in API response)
{"port_map": [{"http": 80, "https": 443}]}
// json array of individual maps (supported accidentally iiuc)
{"port_map: [{"http": 80}, {"https": 443}]}
```
We achieve compatbility by using `NewAttr("...", "list(map(string))",
false)` to be serialized to a `map[string]string` wrapper, instead of using
`BlockAttrs` declaration. The wrapper merges the list of maps
automatically, to ease driver development.
This approach is closer to how v0.8.7 implemented the fields [1][2], and
despite its verbosity, seems to perserve 0.8.7 behavior in hcl2.
This is only required for built-in types that have backward
compatibility constraints. External drivers should use `BlockAttrs`
instead, as they see fit.
[1] https://github.com/hashicorp/nomad/blob/v0.8.7/client/driver/docker.go#L216
[2] https://github.com/hashicorp/nomad/blob/v0.8.7/client/driver/docker.go#L698-L700
This commit is contained in:
Mahmood Ali
parent
95edd4a97b
commit
46cd3c3f55
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@ -8,6 +8,7 @@ import (
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docker "github.com/fsouza/go-dockerclient"
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hclog "github.com/hashicorp/go-hclog"
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"github.com/hashicorp/nomad/helper/pluginutils/hclutils"
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"github.com/hashicorp/nomad/helper/pluginutils/loader"
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"github.com/hashicorp/nomad/plugins/base"
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"github.com/hashicorp/nomad/plugins/drivers"
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@ -251,11 +252,11 @@ var (
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"ipc_mode": hclspec.NewAttr("ipc_mode", "string", false),
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"ipv4_address": hclspec.NewAttr("ipv4_address", "string", false),
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"ipv6_address": hclspec.NewAttr("ipv6_address", "string", false),
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"labels": hclspec.NewBlockAttrs("labels", "string", false),
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"labels": hclspec.NewAttr("labels", "list(map(string))", false),
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"load": hclspec.NewAttr("load", "string", false),
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"logging": hclspec.NewBlock("logging", false, hclspec.NewObject(map[string]*hclspec.Spec{
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"type": hclspec.NewAttr("type", "string", false),
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"config": hclspec.NewBlockAttrs("config", "string", false),
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"config": hclspec.NewAttr("config", "list(map(string))", false),
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})),
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"mac_address": hclspec.NewAttr("mac_address", "string", false),
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"mounts": hclspec.NewBlockList("mounts", hclspec.NewObject(map[string]*hclspec.Spec{
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@ -275,10 +276,10 @@ var (
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})),
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"volume_options": hclspec.NewBlock("volume_options", false, hclspec.NewObject(map[string]*hclspec.Spec{
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"no_copy": hclspec.NewAttr("no_copy", "bool", false),
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"labels": hclspec.NewBlockAttrs("labels", "string", false),
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"labels": hclspec.NewAttr("labels", "list(map(string))", false),
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"driver_config": hclspec.NewBlock("driver_config", false, hclspec.NewObject(map[string]*hclspec.Spec{
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"name": hclspec.NewAttr("name", "string", false),
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"options": hclspec.NewBlockAttrs("options", "string", false),
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"options": hclspec.NewAttr("options", "list(map(string))", false),
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})),
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})),
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})),
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@ -286,15 +287,15 @@ var (
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"network_mode": hclspec.NewAttr("network_mode", "string", false),
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"pids_limit": hclspec.NewAttr("pids_limit", "number", false),
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"pid_mode": hclspec.NewAttr("pid_mode", "string", false),
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"port_map": hclspec.NewBlockAttrs("port_map", "number", false),
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"port_map": hclspec.NewAttr("port_map", "list(map(number))", false),
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"privileged": hclspec.NewAttr("privileged", "bool", false),
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"readonly_rootfs": hclspec.NewAttr("readonly_rootfs", "bool", false),
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"security_opt": hclspec.NewAttr("security_opt", "list(string)", false),
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"shm_size": hclspec.NewAttr("shm_size", "number", false),
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"storage_opt": hclspec.NewBlockAttrs("storage_opt", "string", false),
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"sysctl": hclspec.NewBlockAttrs("sysctl", "string", false),
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"storage_opt": hclspec.NewAttr("storage_opt", "list(map(string))", false),
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"sysctl": hclspec.NewAttr("sysctl", "list(map(string))", false),
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"tty": hclspec.NewAttr("tty", "bool", false),
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"ulimit": hclspec.NewBlockAttrs("ulimit", "string", false),
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"ulimit": hclspec.NewAttr("ulimit", "list(map(string))", false),
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"uts_mode": hclspec.NewAttr("uts_mode", "string", false),
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"userns_mode": hclspec.NewAttr("userns_mode", "string", false),
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"volumes": hclspec.NewAttr("volumes", "list(string)", false),
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@ -312,51 +313,51 @@ var (
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)
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type TaskConfig struct {
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Image string `codec:"image"`
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AdvertiseIPv6Addr bool `codec:"advertise_ipv6_address"`
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Args []string `codec:"args"`
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Auth DockerAuth `codec:"auth"`
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AuthSoftFail bool `codec:"auth_soft_fail"`
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CapAdd []string `codec:"cap_add"`
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CapDrop []string `codec:"cap_drop"`
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Command string `codec:"command"`
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CPUCFSPeriod int64 `codec:"cpu_cfs_period"`
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CPUHardLimit bool `codec:"cpu_hard_limit"`
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Devices []DockerDevice `codec:"devices"`
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DNSSearchDomains []string `codec:"dns_search_domains"`
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DNSOptions []string `codec:"dns_options"`
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DNSServers []string `codec:"dns_servers"`
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Entrypoint []string `codec:"entrypoint"`
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ExtraHosts []string `codec:"extra_hosts"`
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ForcePull bool `codec:"force_pull"`
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Hostname string `codec:"hostname"`
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Interactive bool `codec:"interactive"`
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IPCMode string `codec:"ipc_mode"`
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IPv4Address string `codec:"ipv4_address"`
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IPv6Address string `codec:"ipv6_address"`
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Labels map[string]string `codec:"labels"`
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LoadImage string `codec:"load"`
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Logging DockerLogging `codec:"logging"`
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MacAddress string `codec:"mac_address"`
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Mounts []DockerMount `codec:"mounts"`
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NetworkAliases []string `codec:"network_aliases"`
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NetworkMode string `codec:"network_mode"`
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PidsLimit int64 `codec:"pids_limit"`
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PidMode string `codec:"pid_mode"`
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PortMap map[string]int `codec:"port_map"`
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Privileged bool `codec:"privileged"`
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ReadonlyRootfs bool `codec:"readonly_rootfs"`
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SecurityOpt []string `codec:"security_opt"`
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ShmSize int64 `codec:"shm_size"`
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StorageOpt map[string]string `codec:"storage_opt"`
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Sysctl map[string]string `codec:"sysctl"`
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TTY bool `codec:"tty"`
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Ulimit map[string]string `codec:"ulimit"`
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UTSMode string `codec:"uts_mode"`
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UsernsMode string `codec:"userns_mode"`
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Volumes []string `codec:"volumes"`
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VolumeDriver string `codec:"volume_driver"`
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WorkDir string `codec:"work_dir"`
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Image string `codec:"image"`
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AdvertiseIPv6Addr bool `codec:"advertise_ipv6_address"`
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Args []string `codec:"args"`
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Auth DockerAuth `codec:"auth"`
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AuthSoftFail bool `codec:"auth_soft_fail"`
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CapAdd []string `codec:"cap_add"`
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CapDrop []string `codec:"cap_drop"`
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Command string `codec:"command"`
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CPUCFSPeriod int64 `codec:"cpu_cfs_period"`
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CPUHardLimit bool `codec:"cpu_hard_limit"`
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Devices []DockerDevice `codec:"devices"`
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DNSSearchDomains []string `codec:"dns_search_domains"`
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DNSOptions []string `codec:"dns_options"`
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DNSServers []string `codec:"dns_servers"`
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Entrypoint []string `codec:"entrypoint"`
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ExtraHosts []string `codec:"extra_hosts"`
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ForcePull bool `codec:"force_pull"`
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Hostname string `codec:"hostname"`
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Interactive bool `codec:"interactive"`
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IPCMode string `codec:"ipc_mode"`
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IPv4Address string `codec:"ipv4_address"`
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IPv6Address string `codec:"ipv6_address"`
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Labels hclutils.MapStrStr `codec:"labels"`
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LoadImage string `codec:"load"`
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Logging DockerLogging `codec:"logging"`
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MacAddress string `codec:"mac_address"`
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Mounts []DockerMount `codec:"mounts"`
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NetworkAliases []string `codec:"network_aliases"`
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NetworkMode string `codec:"network_mode"`
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PidsLimit int64 `codec:"pids_limit"`
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PidMode string `codec:"pid_mode"`
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PortMap hclutils.MapStrInt `codec:"port_map"`
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Privileged bool `codec:"privileged"`
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ReadonlyRootfs bool `codec:"readonly_rootfs"`
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SecurityOpt []string `codec:"security_opt"`
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ShmSize int64 `codec:"shm_size"`
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StorageOpt hclutils.MapStrStr `codec:"storage_opt"`
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Sysctl hclutils.MapStrStr `codec:"sysctl"`
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TTY bool `codec:"tty"`
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Ulimit hclutils.MapStrStr `codec:"ulimit"`
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UTSMode string `codec:"uts_mode"`
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UsernsMode string `codec:"userns_mode"`
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Volumes []string `codec:"volumes"`
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VolumeDriver string `codec:"volume_driver"`
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WorkDir string `codec:"work_dir"`
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}
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type DockerAuth struct {
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@ -395,8 +396,8 @@ func (d DockerDevice) toDockerDevice() (docker.Device, error) {
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}
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type DockerLogging struct {
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Type string `codec:"type"`
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Config map[string]string `codec:"config"`
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Type string `codec:"type"`
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Config hclutils.MapStrStr `codec:"config"`
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}
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type DockerMount struct {
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@ -454,7 +455,7 @@ func (m DockerMount) toDockerHostMount() (docker.HostMount, error) {
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type DockerVolumeOptions struct {
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NoCopy bool `codec:"no_copy"`
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Labels map[string]string `codec:"labels"`
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Labels hclutils.MapStrStr `codec:"labels"`
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DriverConfig DockerVolumeDriverConfig `codec:"driver_config"`
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}
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@ -469,8 +470,8 @@ type DockerTmpfsOptions struct {
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// DockerVolumeDriverConfig holds a map of volume driver specific options
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type DockerVolumeDriverConfig struct {
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Name string `codec:"name"`
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Options map[string]string `codec:"options"`
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Name string `codec:"name"`
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Options hclutils.MapStrStr `codec:"options"`
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}
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type DriverConfig struct {
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@ -69,6 +69,78 @@ func TestConfig_ParseJSON(t *testing.T) {
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}
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}
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func TestConfig_PortMap_Deserialization(t *testing.T) {
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parser := hclutils.NewConfigParser(taskConfigSpec)
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expectedMap := map[string]int{
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"ssh": 25,
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"http": 80,
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"https": 443,
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}
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t.Run("parsing hcl block case", func(t *testing.T) {
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validHCL := `
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config {
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image = "redis"
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port_map {
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ssh = 25
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http = 80
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https = 443
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}
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}`
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var tc *TaskConfig
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parser.ParseHCL(t, validHCL, &tc)
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require.EqualValues(t, expectedMap, tc.PortMap)
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})
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t.Run("parsing hcl assignment case", func(t *testing.T) {
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validHCL := `
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config {
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image = "redis"
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port_map = {
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ssh = 25
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http = 80
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https = 443
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}
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}`
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var tc *TaskConfig
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parser.ParseHCL(t, validHCL, &tc)
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require.EqualValues(t, expectedMap, tc.PortMap)
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})
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validJsons := []struct {
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name string
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json string
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}{
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{
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"single map in an array",
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`{"Config": {"image": "redis", "port_map": [{"ssh": 25, "http": 80, "https": 443}]}}`,
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},
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{
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"array of single map entries",
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`{"Config": {"image": "redis", "port_map": [{"ssh": 25}, {"http": 80}, {"https": 443}]}}`,
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},
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{
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"array of maps",
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`{"Config": {"image": "redis", "port_map": [{"ssh": 25, "http": 80}, {"https": 443}]}}`,
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},
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}
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for _, c := range validJsons {
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t.Run("json:"+c.name, func(t *testing.T) {
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var tc *TaskConfig
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parser.ParseJson(t, c.json, &tc)
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require.EqualValues(t, expectedMap, tc.PortMap)
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})
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}
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}
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func TestConfig_ParseAllHCL(t *testing.T) {
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cfgStr := `
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config {
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@ -16,6 +16,7 @@ import (
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hclog "github.com/hashicorp/go-hclog"
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"github.com/hashicorp/nomad/drivers/shared/eventer"
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"github.com/hashicorp/nomad/drivers/shared/executor"
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"github.com/hashicorp/nomad/helper/pluginutils/hclutils"
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"github.com/hashicorp/nomad/helper/pluginutils/loader"
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"github.com/hashicorp/nomad/plugins/base"
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"github.com/hashicorp/nomad/plugins/drivers"
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@ -90,7 +91,7 @@ var (
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"accelerator": hclspec.NewAttr("accelerator", "string", false),
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"graceful_shutdown": hclspec.NewAttr("graceful_shutdown", "bool", false),
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"args": hclspec.NewAttr("args", "list(string)", false),
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"port_map": hclspec.NewBlockAttrs("port_map", "number", false),
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"port_map": hclspec.NewAttr("port_map", "list(map(number))", false),
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})
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// capabilities is returned by the Capabilities RPC and indicates what
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@ -106,11 +107,11 @@ var (
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// TaskConfig is the driver configuration of a taskConfig within a job
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type TaskConfig struct {
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ImagePath string `codec:"image_path"`
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Accelerator string `codec:"accelerator"`
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Args []string `codec:"args"` // extra arguments to qemu executable
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PortMap map[string]int `codec:"port_map"` // A map of host port and the port name defined in the image manifest file
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GracefulShutdown bool `codec:"graceful_shutdown"`
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ImagePath string `codec:"image_path"`
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Accelerator string `codec:"accelerator"`
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Args []string `codec:"args"` // extra arguments to qemu executable
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PortMap hclutils.MapStrInt `codec:"port_map"` // A map of host port and the port name defined in the image manifest file
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GracefulShutdown bool `codec:"graceful_shutdown"`
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}
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// TaskState is the state which is encoded in the handle returned in StartTask.
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@ -27,6 +27,7 @@ import (
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"github.com/hashicorp/nomad/drivers/shared/eventer"
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"github.com/hashicorp/nomad/drivers/shared/executor"
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"github.com/hashicorp/nomad/helper"
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"github.com/hashicorp/nomad/helper/pluginutils/hclutils"
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"github.com/hashicorp/nomad/helper/pluginutils/loader"
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"github.com/hashicorp/nomad/plugins/base"
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"github.com/hashicorp/nomad/plugins/drivers"
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@ -110,7 +111,7 @@ var (
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"dns_servers": hclspec.NewAttr("dns_servers", "list(string)", false),
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"dns_search_domains": hclspec.NewAttr("dns_search_domains", "list(string)", false),
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"net": hclspec.NewAttr("net", "list(string)", false),
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"port_map": hclspec.NewBlockAttrs("port_map", "string", false),
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"port_map": hclspec.NewAttr("port_map", "list(map(string))", false),
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"volumes": hclspec.NewAttr("volumes", "list(string)", false),
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"insecure_options": hclspec.NewAttr("insecure_options", "list(string)", false),
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"no_overlay": hclspec.NewAttr("no_overlay", "bool", false),
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@ -140,16 +141,16 @@ type Config struct {
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// TaskConfig is the driver configuration of a taskConfig within a job
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type TaskConfig struct {
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ImageName string `codec:"image"`
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Command string `codec:"command"`
|
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Args []string `codec:"args"`
|
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TrustPrefix string `codec:"trust_prefix"`
|
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DNSServers []string `codec:"dns_servers"` // DNS Server for containers
|
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DNSSearchDomains []string `codec:"dns_search_domains"` // DNS Search domains for containers
|
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Net []string `codec:"net"` // Networks for the containers
|
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PortMap map[string]string `codec:"port_map"` // A map of host port and the port name defined in the image manifest file
|
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Volumes []string `codec:"volumes"` // Host-Volumes to mount in, syntax: /path/to/host/directory:/destination/path/in/container[:readOnly]
|
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InsecureOptions []string `codec:"insecure_options"` // list of args for --insecure-options
|
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ImageName string `codec:"image"`
|
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Command string `codec:"command"`
|
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Args []string `codec:"args"`
|
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TrustPrefix string `codec:"trust_prefix"`
|
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DNSServers []string `codec:"dns_servers"` // DNS Server for containers
|
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DNSSearchDomains []string `codec:"dns_search_domains"` // DNS Search domains for containers
|
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Net []string `codec:"net"` // Networks for the containers
|
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PortMap hclutils.MapStrStr `codec:"port_map"` // A map of host port and the port name defined in the image manifest file
|
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Volumes []string `codec:"volumes"` // Host-Volumes to mount in, syntax: /path/to/host/directory:/destination/path/in/container[:readOnly]
|
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InsecureOptions []string `codec:"insecure_options"` // list of args for --insecure-options
|
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|
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NoOverlay bool `codec:"no_overlay"` // disable overlayfs for rkt run
|
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Debug bool `codec:"debug"` // Enable debug option for rkt command
|
||||
|
|
|
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51
helper/pluginutils/hclutils/types.go
Normal file
51
helper/pluginutils/hclutils/types.go
Normal file
|
|
@ -0,0 +1,51 @@
|
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package hclutils
|
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|
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import (
|
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"github.com/ugorji/go/codec"
|
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)
|
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|
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// MapStrInt is a wrapper for map[string]int that handles
|
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// deserialization from different hcl2 json representation
|
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// that were supported in Nomad 0.8
|
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type MapStrInt map[string]int
|
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|
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func (s *MapStrInt) CodecEncodeSelf(enc *codec.Encoder) {
|
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v := []map[string]int{*s}
|
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enc.MustEncode(v)
|
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}
|
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|
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func (s *MapStrInt) CodecDecodeSelf(dec *codec.Decoder) {
|
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ms := []map[string]int{}
|
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dec.MustDecode(&ms)
|
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|
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r := map[string]int{}
|
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for _, m := range ms {
|
||||
for k, v := range m {
|
||||
r[k] = v
|
||||
}
|
||||
}
|
||||
*s = r
|
||||
}
|
||||
|
||||
// MapStrStr is a wrapper for map[string]string that handles
|
||||
// deserialization from different hcl2 json representation
|
||||
// that were supported in Nomad 0.8
|
||||
type MapStrStr map[string]string
|
||||
|
||||
func (s *MapStrStr) CodecEncodeSelf(enc *codec.Encoder) {
|
||||
v := []map[string]string{*s}
|
||||
enc.MustEncode(v)
|
||||
}
|
||||
|
||||
func (s *MapStrStr) CodecDecodeSelf(dec *codec.Decoder) {
|
||||
ms := []map[string]string{}
|
||||
dec.MustDecode(&ms)
|
||||
|
||||
r := map[string]string{}
|
||||
for _, m := range ms {
|
||||
for k, v := range m {
|
||||
r[k] = v
|
||||
}
|
||||
}
|
||||
*s = r
|
||||
}
|
||||
139
helper/pluginutils/hclutils/types_test.go
Normal file
139
helper/pluginutils/hclutils/types_test.go
Normal file
|
|
@ -0,0 +1,139 @@
|
|||
package hclutils_test
|
||||
|
||||
import (
|
||||
"testing"
|
||||
|
||||
"github.com/hashicorp/nomad/helper/pluginutils/hclutils"
|
||||
"github.com/hashicorp/nomad/plugins/shared/hclspec"
|
||||
"github.com/stretchr/testify/require"
|
||||
)
|
||||
|
||||
func TestMapStrInt_JsonArrays(t *testing.T) {
|
||||
spec := hclspec.NewObject(map[string]*hclspec.Spec{
|
||||
"port_map": hclspec.NewAttr("port_map", "list(map(number))", false),
|
||||
})
|
||||
|
||||
type PidMapTaskConfig struct {
|
||||
PortMap hclutils.MapStrInt `codec:"port_map"`
|
||||
}
|
||||
|
||||
parser := hclutils.NewConfigParser(spec)
|
||||
|
||||
expected := PidMapTaskConfig{
|
||||
PortMap: map[string]int{
|
||||
"http": 80,
|
||||
"https": 443,
|
||||
"ssh": 25,
|
||||
},
|
||||
}
|
||||
|
||||
t.Run("hcl case", func(t *testing.T) {
|
||||
config := `
|
||||
config {
|
||||
port_map {
|
||||
http = 80
|
||||
https = 443
|
||||
ssh = 25
|
||||
}
|
||||
}`
|
||||
// Test decoding
|
||||
var tc PidMapTaskConfig
|
||||
parser.ParseHCL(t, config, &tc)
|
||||
|
||||
require.EqualValues(t, expected, tc)
|
||||
|
||||
})
|
||||
jsonCases := []struct {
|
||||
name string
|
||||
json string
|
||||
}{
|
||||
{
|
||||
"array of map entries",
|
||||
`{"Config": {"port_map": [{"http": 80}, {"https": 443}, {"ssh": 25}]}}`,
|
||||
},
|
||||
{
|
||||
"array with one map",
|
||||
`{"Config": {"port_map": [{"http": 80, "https": 443, "ssh": 25}]}}`,
|
||||
},
|
||||
{
|
||||
"array of maps",
|
||||
`{"Config": {"port_map": [{"http": 80, "https": 443}, {"ssh": 25}]}}`,
|
||||
},
|
||||
}
|
||||
|
||||
for _, c := range jsonCases {
|
||||
t.Run("json:"+c.name, func(t *testing.T) {
|
||||
// Test decoding
|
||||
var tc PidMapTaskConfig
|
||||
parser.ParseJson(t, c.json, &tc)
|
||||
|
||||
require.EqualValues(t, expected, tc)
|
||||
|
||||
})
|
||||
}
|
||||
}
|
||||
|
||||
func TestMapStrStr_JsonArrays(t *testing.T) {
|
||||
spec := hclspec.NewObject(map[string]*hclspec.Spec{
|
||||
"port_map": hclspec.NewAttr("port_map", "list(map(string))", false),
|
||||
})
|
||||
|
||||
type PidMapTaskConfig struct {
|
||||
PortMap hclutils.MapStrStr `codec:"port_map"`
|
||||
}
|
||||
|
||||
parser := hclutils.NewConfigParser(spec)
|
||||
|
||||
expected := PidMapTaskConfig{
|
||||
PortMap: map[string]string{
|
||||
"http": "80",
|
||||
"https": "443",
|
||||
"ssh": "25",
|
||||
},
|
||||
}
|
||||
|
||||
t.Run("hcl case", func(t *testing.T) {
|
||||
config := `
|
||||
config {
|
||||
port_map {
|
||||
http = "80"
|
||||
https = "443"
|
||||
ssh = "25"
|
||||
}
|
||||
}`
|
||||
// Test decoding
|
||||
var tc PidMapTaskConfig
|
||||
parser.ParseHCL(t, config, &tc)
|
||||
|
||||
require.EqualValues(t, expected, tc)
|
||||
|
||||
})
|
||||
jsonCases := []struct {
|
||||
name string
|
||||
json string
|
||||
}{
|
||||
{
|
||||
"array of map entries",
|
||||
`{"Config": {"port_map": [{"http": "80"}, {"https": "443"}, {"ssh": "25"}]}}`,
|
||||
},
|
||||
{
|
||||
"array with one map",
|
||||
`{"Config": {"port_map": [{"http": "80", "https": "443", "ssh": "25"}]}}`,
|
||||
},
|
||||
{
|
||||
"array of maps",
|
||||
`{"Config": {"port_map": [{"http": "80", "https": "443"}, {"ssh": "25"}]}}`,
|
||||
},
|
||||
}
|
||||
|
||||
for _, c := range jsonCases {
|
||||
t.Run("json:"+c.name, func(t *testing.T) {
|
||||
// Test decoding
|
||||
var tc PidMapTaskConfig
|
||||
parser.ParseJson(t, c.json, &tc)
|
||||
|
||||
require.EqualValues(t, expected, tc)
|
||||
|
||||
})
|
||||
}
|
||||
}
|
||||
Loading…
Reference in a new issue