github.com/darkowlzz/helm@v2.5.1-0.20171213183701-6707fe0468d4+incompatible/pkg/tiller/release_list.go (about)

     1  /*
     2  Copyright 2016 The Kubernetes Authors All rights reserved.
     3  
     4  Licensed under the Apache License, Version 2.0 (the "License");
     5  you may not use this file except in compliance with the License.
     6  You may obtain a copy of the License at
     7  
     8      http://www.apache.org/licenses/LICENSE-2.0
     9  
    10  Unless required by applicable law or agreed to in writing, software
    11  distributed under the License is distributed on an "AS IS" BASIS,
    12  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
    13  See the License for the specific language governing permissions and
    14  limitations under the License.
    15  */
    16  
    17  package tiller
    18  
    19  import (
    20  	"fmt"
    21  	"regexp"
    22  
    23  	"k8s.io/helm/pkg/proto/hapi/release"
    24  	"k8s.io/helm/pkg/proto/hapi/services"
    25  	relutil "k8s.io/helm/pkg/releaseutil"
    26  )
    27  
    28  // ListReleases lists the releases found by the server.
    29  func (s *ReleaseServer) ListReleases(req *services.ListReleasesRequest, stream services.ReleaseService_ListReleasesServer) error {
    30  	if len(req.StatusCodes) == 0 {
    31  		req.StatusCodes = []release.Status_Code{release.Status_DEPLOYED}
    32  	}
    33  
    34  	//rels, err := s.env.Releases.ListDeployed()
    35  	rels, err := s.env.Releases.ListFilterAll(func(r *release.Release) bool {
    36  		for _, sc := range req.StatusCodes {
    37  			if sc == r.Info.Status.Code {
    38  				return true
    39  			}
    40  		}
    41  		return false
    42  	})
    43  	if err != nil {
    44  		return err
    45  	}
    46  
    47  	if req.Namespace != "" {
    48  		rels, err = filterByNamespace(req.Namespace, rels)
    49  		if err != nil {
    50  			return err
    51  		}
    52  	}
    53  
    54  	if len(req.Filter) != 0 {
    55  		rels, err = filterReleases(req.Filter, rels)
    56  		if err != nil {
    57  			return err
    58  		}
    59  	}
    60  
    61  	total := int64(len(rels))
    62  
    63  	switch req.SortBy {
    64  	case services.ListSort_NAME:
    65  		relutil.SortByName(rels)
    66  	case services.ListSort_LAST_RELEASED:
    67  		relutil.SortByDate(rels)
    68  	}
    69  
    70  	if req.SortOrder == services.ListSort_DESC {
    71  		ll := len(rels)
    72  		rr := make([]*release.Release, ll)
    73  		for i, item := range rels {
    74  			rr[ll-i-1] = item
    75  		}
    76  		rels = rr
    77  	}
    78  
    79  	l := int64(len(rels))
    80  	if req.Offset != "" {
    81  
    82  		i := -1
    83  		for ii, cur := range rels {
    84  			if cur.Name == req.Offset {
    85  				i = ii
    86  			}
    87  		}
    88  		if i == -1 {
    89  			return fmt.Errorf("offset %q not found", req.Offset)
    90  		}
    91  
    92  		if len(rels) < i {
    93  			return fmt.Errorf("no items after %q", req.Offset)
    94  		}
    95  
    96  		rels = rels[i:]
    97  		l = int64(len(rels))
    98  	}
    99  
   100  	if req.Limit == 0 {
   101  		req.Limit = ListDefaultLimit
   102  	}
   103  
   104  	next := ""
   105  	if l > req.Limit {
   106  		next = rels[req.Limit].Name
   107  		rels = rels[0:req.Limit]
   108  		l = int64(len(rels))
   109  	}
   110  
   111  	res := &services.ListReleasesResponse{
   112  		Next:     next,
   113  		Count:    l,
   114  		Total:    total,
   115  		Releases: rels,
   116  	}
   117  	return stream.Send(res)
   118  }
   119  
   120  func filterByNamespace(namespace string, rels []*release.Release) ([]*release.Release, error) {
   121  	matches := []*release.Release{}
   122  	for _, r := range rels {
   123  		if namespace == r.Namespace {
   124  			matches = append(matches, r)
   125  		}
   126  	}
   127  	return matches, nil
   128  }
   129  
   130  func filterReleases(filter string, rels []*release.Release) ([]*release.Release, error) {
   131  	preg, err := regexp.Compile(filter)
   132  	if err != nil {
   133  		return rels, err
   134  	}
   135  	matches := []*release.Release{}
   136  	for _, r := range rels {
   137  		if preg.MatchString(r.Name) {
   138  			matches = append(matches, r)
   139  		}
   140  	}
   141  	return matches, nil
   142  }