Split data layer into separate files

pkg/dashboard/subproc/data.go

@@ -5,8 +5,6 @@ import (
 	"encoding/json"
 	"errors"
 	"fmt"
-	"regexp"
-	"sort"
 	"strconv"
 	"strings"
 	"time"
@@ -17,7 +15,6 @@ import (
 	"github.com/komodorio/helm-dashboard/pkg/dashboard/utils"
 	log "github.com/sirupsen/logrus"
 	"gopkg.in/yaml.v3"
-	"helm.sh/helm/v3/pkg/chart"
 	"helm.sh/helm/v3/pkg/release"
 	v1 "k8s.io/apimachinery/pkg/apis/testapigroup/v1"
 )
@@ -64,20 +61,6 @@ func (d *DataLayer) runCommandHelm(cmd ...string) (string, error) {
 	return d.runCommand(cmd...)
 }
 
-func (d *DataLayer) runCommandKubectl(cmd ...string) (string, error) {
-	if d.Kubectl == "" {
-		d.Kubectl = "kubectl"
-	}
-
-	cmd = append([]string{d.Kubectl}, cmd...)
-
-	if d.KubeContext != "" {
-		cmd = append(cmd, "--context", d.KubeContext)
-	}
-
-	return d.runCommand(cmd...)
-}
-
 func (d *DataLayer) forceNamespace(s *string) {
 	if d.Namespace != "" {
 		*s = d.Namespace
@@ -102,46 +85,14 @@ func (d *DataLayer) CheckConnectivity() error {
 	return nil
 }
 
-type KubeContext struct {
-	IsCurrent bool
-	Name      string
-	Cluster   string
-	AuthInfo  string
-	Namespace string
-}
-
-func (d *DataLayer) ListContexts() (res []KubeContext, err error) {
-	out, err := d.runCommandKubectl("config", "get-contexts")
-	if err != nil {
-		return nil, err
+func (d *DataLayer) GetStatus() *StatusInfo {
+	sum := float64(d.Cache.HitCount + d.Cache.MissCount)
+	if sum > 0 {
+		d.StatusInfo.CacheHitRatio = float64(d.Cache.HitCount) / sum
+	} else {
+		d.StatusInfo.CacheHitRatio = 0
 	}
-
-	// kubectl has no JSON output for it, we'll have to do custom text parsing
-	lines := strings.Split(out, "\n")
-
-	// find field positions
-	fields := regexp.MustCompile(`(\w+\s+)`).FindAllString(lines[0], -1)
-	cur := len(fields[0])
-	name := cur + len(fields[1])
-	cluster := name + len(fields[2])
-	auth := cluster + len(fields[3])
-
-	// read items
-	for _, line := range lines[1:] {
-		if strings.TrimSpace(line) == "" {
-			continue
-		}
-
-		res = append(res, KubeContext{
-			IsCurrent: strings.TrimSpace(line[0:cur]) == "*",
-			Name:      strings.TrimSpace(line[cur:name]),
-			Cluster:   strings.TrimSpace(line[name:cluster]),
-			AuthInfo:  strings.TrimSpace(line[cluster:auth]),
-			Namespace: strings.TrimSpace(line[auth:]),
-		})
-	}
-
-	return res, nil
+	return d.StatusInfo
 }
 
 func (d *DataLayer) ListInstalled() (res []ReleaseElement, err error) {
@@ -197,70 +148,6 @@ func (d *DataLayer) ReleaseHistory(namespace string, releaseName string) (res []
 	return res, nil
 }
 
-func (d *DataLayer) ChartRepoVersions(chartName string) (res []*RepoChartElement, err error) {
-	search := "/" + chartName + "\v"
-	if strings.Contains(chartName, "/") {
-		search = "\v" + chartName + "\v"
-	}
-
-	cmd := []string{"search", "repo", "--regexp", search, "--versions", "--output", "json"}
-	out, err := d.Cache.String(cacheTagRepoVers(chartName), []string{CacheKeyAllRepos}, func() (string, error) {
-		return d.runCommandHelm(cmd...)
-	})
-	if err != nil {
-		return nil, err
-	}
-
-	err = json.Unmarshal([]byte(out), &res)
-	if err != nil {
-		return nil, err
-	}
-	return res, nil
-}
-
-func (d *DataLayer) ChartRepoCharts(repoName string) (res []*RepoChartElement, err error) {
-	cmd := []string{"search", "repo", "--regexp", "\v" + repoName + "/", "--output", "json"}
-	out, err := d.Cache.String(cacheTagRepoCharts(repoName), []string{CacheKeyAllRepos}, func() (string, error) {
-		return d.runCommandHelm(cmd...)
-	})
-	if err != nil {
-		return nil, err
-	}
-
-	err = json.Unmarshal([]byte(out), &res)
-	if err != nil {
-		return nil, err
-	}
-
-	ins, err := d.ListInstalled()
-	if err != nil {
-		return nil, err
-	}
-
-	enrichRepoChartsWithInstalled(res, ins)
-
-	return res, nil
-}
-
-func enrichRepoChartsWithInstalled(charts []*RepoChartElement, installed []ReleaseElement) {
-	for _, rchart := range charts {
-		for _, rel := range installed {
-			c, _, err := utils.ChartAndVersion(rel.Chart)
-			if err != nil {
-				log.Warnf("Failed to parse chart: %s", err)
-				continue
-			}
-
-			pieces := strings.Split(rchart.Name, "/")
-			if pieces[1] == c {
-				// TODO: there can be more than one
-				rchart.InstalledNamespace = rel.Namespace
-				rchart.InstalledName = rel.Name
-			}
-		}
-	}
-}
-
 type SectionFn = func(string, string, int, bool) (string, error) // TODO: rework it into struct-based argument?
 
 func (d *DataLayer) RevisionManifests(namespace string, chartName string, revision int, _ bool) (res string, err error) {
@@ -328,63 +215,6 @@ func (d *DataLayer) RevisionValues(namespace string, chartName string, revision
 	})
 }
 
-func (d *DataLayer) GetResource(namespace string, def *v1.Carp) (*v1.Carp, error) {
-	out, err := d.runCommandKubectl("get", strings.ToLower(def.Kind), def.Name, "--namespace", namespace, "--output", "json")
-	if err != nil {
-		if strings.HasSuffix(strings.TrimSpace(err.Error()), " not found") {
-			return &v1.Carp{
-				Status: v1.CarpStatus{
-					Phase:   "NotFound",
-					Message: err.Error(),
-					Reason:  "not found",
-				},
-			}, nil
-		} else {
-			return nil, err
-		}
-	}
-
-	var res v1.Carp
-	err = json.Unmarshal([]byte(out), &res)
-	if err != nil {
-		return nil, err
-	}
-
-	sort.Slice(res.Status.Conditions, func(i, j int) bool {
-		// some condition types always bubble up
-		if res.Status.Conditions[i].Type == "Available" {
-			return false
-		}
-
-		if res.Status.Conditions[j].Type == "Available" {
-			return true
-		}
-
-		t1 := res.Status.Conditions[i].LastTransitionTime
-		t2 := res.Status.Conditions[j].LastTransitionTime
-		return t1.Time.Before(t2.Time)
-	})
-
-	return &res, nil
-}
-
-func (d *DataLayer) GetResourceYAML(namespace string, def *v1.Carp) (string, error) {
-	out, err := d.runCommandKubectl("get", strings.ToLower(def.Kind), def.Name, "--namespace", namespace, "--output", "yaml")
-	if err != nil {
-		return "", err
-	}
-
-	return out, nil
-}
-
-func (d *DataLayer) DescribeResource(namespace string, kind string, name string) (string, error) {
-	out, err := d.runCommandKubectl("describe", strings.ToLower(kind), name, "--namespace", namespace)
-	if err != nil {
-		return "", err
-	}
-	return out, nil
-}
-
 func (d *DataLayer) ReleaseUninstall(namespace string, name string) error {
 	d.Cache.Invalidate(CacheKeyRelList, cacheTagRelease(namespace, name))
 
@@ -399,18 +229,6 @@ func (d *DataLayer) Rollback(namespace string, name string, rev int) error {
 	return err
 }
 
-func (d *DataLayer) ChartRepoUpdate(name string) error {
-	d.Cache.Invalidate(cacheTagRepoName(name), CacheKeyAllRepos)
-
-	cmd := []string{"repo", "update"}
-	if name != "" {
-		cmd = append(cmd, name)
-	}
-
-	_, err := d.runCommandHelm(cmd...)
-	return err
-}
-
 func (d *DataLayer) ChartInstall(namespace string, name string, repoChart string, version string, justTemplate bool, values string, reuseVals bool) (string, error) {
 	if values == "" && reuseVals {
 		oldVals, err := d.RevisionValues(namespace, name, 0, true)
@@ -452,102 +270,6 @@ func (d *DataLayer) ChartInstall(namespace string, name string, repoChart string
 	return out, nil
 }
 
-// ShowValues get values from repo chart, not from installed release
-func (d *DataLayer) ShowValues(chart string, ver string) (string, error) {
-	return d.Cache.String(CacheKeyRepoChartValues+"\v"+chart+"\v"+ver, nil, func() (string, error) {
-		return d.runCommandHelm("show", "values", chart, "--version", ver)
-	})
-}
-
-func (d *DataLayer) ShowChart(chartName string) ([]*chart.Metadata, error) { // TODO: add version parameter to method
-	out, err := d.Cache.String(CacheKeyShowChart+"\v"+chartName, []string{"chart\v" + chartName}, func() (string, error) {
-		return d.runCommandHelm("show", "chart", chartName)
-	})
-
-	if err != nil {
-		return nil, err
-	}
-
-	deccoder := yaml.NewDecoder(bytes.NewReader([]byte(out)))
-	res := make([]*chart.Metadata, 0)
-	var tmp interface{}
-
-	for deccoder.Decode(&tmp) == nil {
-		jsoned, err := json.Marshal(tmp)
-		if err != nil {
-			return nil, err
-		}
-
-		var resjson chart.Metadata
-		err = json.Unmarshal(jsoned, &resjson)
-		if err != nil {
-			return nil, err
-		}
-		res = append(res, &resjson)
-	}
-
-	return res, nil
-}
-
-func (d *DataLayer) ChartRepoList() (res []RepositoryElement, err error) {
-	out, err := d.Cache.String(CacheKeyAllRepos, nil, func() (string, error) {
-		return d.runCommandHelm("repo", "list", "--output", "json")
-	})
-	if err != nil {
-		return nil, err
-	}
-
-	err = json.Unmarshal([]byte(out), &res)
-	if err != nil {
-		return nil, err
-	}
-	return res, nil
-}
-
-func (d *DataLayer) ChartRepoAdd(name string, url string) (string, error) {
-	d.Cache.Invalidate(CacheKeyAllRepos)
-	out, err := d.runCommandHelm("repo", "add", "--force-update", name, url)
-	if err != nil {
-		return "", err
-	}
-
-	return out, nil
-}
-
-func (d *DataLayer) ChartRepoDelete(name string) (string, error) {
-	d.Cache.Invalidate(CacheKeyAllRepos)
-	out, err := d.runCommandHelm("repo", "remove", name)
-	if err != nil {
-		return "", err
-	}
-
-	return out, nil
-}
-
-func (d *DataLayer) GetNameSpaces() (res *NamespaceElement, err error) {
-	out, err := d.runCommandKubectl("get", "namespaces", "-o", "json")
-	if err != nil {
-		return nil, err
-	}
-
-	err = json.Unmarshal([]byte(out), &res)
-	if err != nil {
-		return nil, err
-	}
-
-	return res, nil
-}
-
-func (d *DataLayer) GetStatus() *StatusInfo {
-	sum := float64(d.Cache.HitCount + d.Cache.MissCount)
-	if sum > 0 {
-		d.StatusInfo.CacheHitRatio = float64(d.Cache.HitCount) / sum
-	} else {
-		d.StatusInfo.CacheHitRatio = 0
-	}
-	return d.StatusInfo
-}
-
 func RevisionDiff(functor SectionFn, ext string, namespace string, name string, revision1 int, revision2 int, flag bool) (string, error) {
 	if revision1 == 0 || revision2 == 0 {
 		log.Debugf("One of revisions is zero: %d %d", revision1, revision2)
@@ -575,11 +297,3 @@ func GetDiff(text1 string, text2 string, name1 string, name2 string) string {
 	log.Debugf("The diff is: %s", diff)
 	return diff
 }
-
-type NamespaceElement struct {
-	Items []struct {
-		Metadata struct {
-			Name string `json:"name"`
-		} `json:"metadata"`
-	} `json:"items"`
-}