diff options
Diffstat (limited to 'provider_base/services/couchdb.rb')
| -rw-r--r-- | provider_base/services/couchdb.rb | 60 |
1 files changed, 60 insertions, 0 deletions
diff --git a/provider_base/services/couchdb.rb b/provider_base/services/couchdb.rb new file mode 100644 index 00000000..3bee3a67 --- /dev/null +++ b/provider_base/services/couchdb.rb @@ -0,0 +1,60 @@ +####################################################################### +### +### NOTE! +### +### Currently, mirrors do not work! The only thing that works is all +### nodes multimaster or a single master. +### +####################################################################### +# +# custom logic for couchdb json resolution +# ============================================ +# +# There are three modes for a node: +# +# Multimaster +# ----------- +# +# Multimaster uses bigcouch (soon to use couchdb in replication mode +# similar to bigcouch). +# +# Use "multimaster" mode when: +# +# * multiple nodes are marked couch.master +# * OR no nodes are marked couch.master +# +# Master +# ------ +# +# Master uses plain couchdb that is readable and writable. +# +# Use "master" mode when: +# +# * Exactly one node, this one, is marked as master. +# +# Mirror +# ------ +# +# Mirror creates a read-only copy of the database. It uses plain coucdhb +# with legacy couchdb replication (http based). +# +# This does not currently work, because http replication can't handle +# the number of user databases. +# +# Use "mirror" mode when: +# +# * some nodes are marked couch.master +# * AND this node is not a master +# + +master_count = nodes_like_me['services' => 'couchdb']['couch.master' => true].size + +if master_count == 0 + apply_partial 'services/_couchdb_multimaster.json' +elsif couch.master && master_count > 1 + apply_partial 'services/_couchdb_multimaster.json' +elsif couch.master && master_count == 1 + apply_partial 'services/_couchdb_master.json' +else + apply_partial 'services/_couchdb_mirror.json' +end |