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Chetan Mehrotra commented on OAK-6545: -------------------------------------- Done the implemenation in 1804763- 1804770 Implementation has following support * Supports exporting NodeState in json and cnd format * Export can be done via explicit {{export}} command and a groovy console command * Support serializing blobs in FileDataStore storage i.e. blobs would be stored in a local FDS * Blob serialization can skip problamatic binaries by writing a marker blobId. Such blobs would fail on deserialize and marked as "*ERROR*-<blob id>" in the serialized form * json is written in a streaming way so supports serializing large tree *Export Command* {noformat} $ java -jar oak-run-*.jar export -p /path/in/repo /path/of/segmentstore -o /path/of/output/dir $ java -jar oak-run-*.jar export -h Exports NodeState as json The export command supports exporting nodes from a repository in json. It also provide options to export the blobs which are stored in FileDataStore format Option Description ------ ----------- -b, --blobs [Boolean] Export blobs also. By default blobs are not exported (default: false) -d, --depth [Integer] Max depth to include in output (default: 2147483647) -f, --filter <String> Filter expression as json to filter out which nodes and properties are included in exported file (default: {"properties":["*", "-:childOrder"]}) --filter-file <File> Filter file which contains the filter json expression --format <String> Export format 'json' or 'txt' (default: json) -n, --max-child-nodes [Integer] Maximum number of child nodes to include for a any parent (default: 2147483647) -o, --out <File> Output directory where the exported json and blobs are stored (default: .) -p, --path <String> Repository path to export (default: /) --pretty [Boolean] Pretty print the json output (default: true) {noformat} *Export in Groovy Console* {noformat} $ java -jar oak-run-*.jar console /path/of/segmentstore Apache Jackrabbit Oak 1.8-SNAPSHOT Repository connected in read-only mode. Use '--read-write' for write operations Jackrabbit Oak Shell (Apache Jackrabbit Oak 1.8-SNAPSHOT, JVM: 1.8.0_66) Type ':help' or ':h' for help. ---------------------------------------------------------------------------------------------------------------------------- /> cd /var/reports /var/reports> export -c { "jcr:primaryType": "nam:sling:Folder", "jcr:mixinTypes": [ "nam:rep:AccessControllable" ], "jcr:createdBy": "admin", "jcr:created": "dat:2017-01-26T08:02:24.122+05:30", "rep:policy": { "jcr:primaryType": "nam:rep:ACL", "allow": { "jcr:primaryType": "nam:rep:GrantACE", "rep:principalName": "snapshotservice", "rep:privileges": [ "nam:jcr:read", "nam:rep:write" ] } } } /var/reports> export -h usage: export-nodes [-h] [-p <repo_path_to_export>] [-o <dir_name>] Export nodes and its children as json -b,--blobs Serialize blob contents also -c,--console Output to console -d,--depth <arg> Maximum tree depth to write out. Default to all -f,--filter <arg> Filter for nodes and properties to include in json format. Default {"properties":["*", "-:childOrder"]} -h,--help Print usage -n,--max-child-nodes <arg> maximum number of child nodes to include -o,--out <out> Directory name to store json and blobs (default: .) -p,--path <path> Repository path to export (default: current node) {noformat} > Tooling to serialize NodeState as json along with blobs > ------------------------------------------------------- > > Key: OAK-6545 > URL: https://issues.apache.org/jira/browse/OAK-6545 > Project: Jackrabbit Oak > Issue Type: New Feature > Components: run > Reporter: Chetan Mehrotra > Assignee: Chetan Mehrotra > Fix For: 1.8 > > > For debugging certain cases like OAK-6525 we need a way to analyze the hidden > NodeState structure used by indexes. To simplify the effort I would like to > add some tooling to oak-run which allows dumping the NodeState and its > children for certain path along with the blob contents -- This message was sent by Atlassian JIRA (v6.4.14#64029)