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datasource_nomad_plugin.go
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datasource_nomad_plugin.go
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// Copyright (c) HashiCorp, Inc.
// SPDX-License-Identifier: MPL-2.0
package nomad
import (
"fmt"
"log"
"strings"
"github.com/hashicorp/nomad/api"
"github.com/hashicorp/terraform-plugin-sdk/helper/resource"
"github.com/hashicorp/terraform-plugin-sdk/helper/schema"
)
func dataSourcePlugin() *schema.Resource {
return &schema.Resource{
Read: dataSourcePluginRead,
Schema: map[string]*schema.Schema{
"plugin_id": {
Description: "Plugin ID",
Type: schema.TypeString,
Required: true,
},
"wait_for_registration": {
Description: "Wait for the plugin to be registered in Noamd",
Type: schema.TypeBool,
Optional: true,
Default: false,
},
"wait_for_healthy": {
Description: "Wait for to be backed by a specified number of controllers",
Type: schema.TypeBool,
Optional: true,
Default: false,
},
// computed attributes
"plugin_provider": {
Computed: true,
Type: schema.TypeString,
},
"plugin_provider_version": {
Computed: true,
Type: schema.TypeString,
},
"controller_required": {
Computed: true,
Type: schema.TypeBool,
},
"controllers_expected": {
Computed: true,
Type: schema.TypeInt,
},
"controllers_healthy": {
Computed: true,
Type: schema.TypeInt,
},
"nodes_healthy": {
Computed: true,
Type: schema.TypeInt,
},
"nodes_expected": {
Computed: true,
Type: schema.TypeInt,
},
"nodes": {
Description: "Available nodes for this plugin",
Computed: true,
Type: schema.TypeList,
Elem: &schema.Resource{
Schema: map[string]*schema.Schema{
"name": {
Type: schema.TypeString,
Computed: true,
},
"healthy": {
Type: schema.TypeBool,
Computed: true,
},
"healthy_description": {
Type: schema.TypeString,
Computed: true,
},
},
},
},
},
}
}
func dataSourcePluginRead(d *schema.ResourceData, meta interface{}) error {
providerConfig := meta.(ProviderConfig)
client := providerConfig.client
wait := d.Get("wait_for_registration").(bool)
waitForHealthy := d.Get("wait_for_healthy").(bool)
if wait || waitForHealthy {
resource.Retry(d.Timeout(schema.TimeoutRead), func() *resource.RetryError {
return getPluginInfo(client, d)
})
} else {
err := getPluginInfo(client, d)
if err != nil {
return err.Err
}
}
return nil
}
func getPluginInfo(client *api.Client, d *schema.ResourceData) *resource.RetryError {
id := d.Get("plugin_id").(string)
waitForHealthy := d.Get("wait_for_healthy").(bool)
log.Printf("[DEBUG] Getting plugin %q...", id)
plugin, _, err := client.CSIPlugins().Info(id, nil)
if err != nil {
// As of Nomad 0.4.1, the API client returns an error for 404
// rather than a nil result, so we must check this way.
log.Printf("[ERROR] error checking for plugin: %#v", err)
if strings.Contains(err.Error(), "404") {
return resource.RetryableError(fmt.Errorf("plugin %q not found", id))
}
return resource.NonRetryableError(fmt.Errorf("error checking for plugin: %#v", err))
}
healthy := plugin.ControllersExpected == plugin.ControllersHealthy &&
plugin.NodesExpected == plugin.NodesHealthy
if waitForHealthy && !healthy {
log.Printf("[DEBUG] plugin %s not yet healthy: %d/%d controllers healthy %d/%d nodes healthy",
id,
plugin.ControllersHealthy, plugin.ControllersExpected,
plugin.NodesHealthy, plugin.NodesExpected)
return resource.RetryableError(fmt.Errorf("plugin %s not yet healthy", id))
}
d.SetId(plugin.ID)
d.Set("plugin_id", plugin.ID)
d.Set("plugin_provider", plugin.Provider)
d.Set("plugin_provider_version", plugin.Version)
d.Set("controller_required", plugin.ControllerRequired)
d.Set("controllers_expected", plugin.ControllersExpected)
d.Set("controllers_healthy", plugin.ControllersHealthy)
d.Set("nodes_expected", plugin.NodesExpected)
d.Set("nodes_healthy", plugin.NodesHealthy)
nodes := make([]map[string]interface{}, 0, len(plugin.Nodes))
for name, info := range plugin.Nodes {
nodes = append(nodes, map[string]interface{}{
"name": name,
"healthy": info.Healthy,
"healthy_description": info.HealthDescription,
})
}
d.Set("nodes", nodes)
return nil
}