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This commit adds a very basic process that will periodically go through
a list of given ids and republish the values for their ipns entries.

License: MIT
Signed-off-by: Jeromy <jeromyj@gmail.com>

Queries previously would sometimes only query three (alpha value) peers
before halting the operation. This PR changes the number of peers
grabbed from the routing table to start a query to K.

Dht nodes would also not respond with enough peers, as per the kademlia
paper, this has been changed to from 4 to 'K'.

The query mechanism itself also was flawed in that it would pull all the
peers it had yet to query out of the queue and 'start' the query for
them. The concurrency rate limiting was done inside the 'queryPeer'
method after the goroutine was spawned. This did not allow for peers
receiver from query replies to be properly queried in order of distance.

License: MIT
Signed-off-by: Jeromy <jeromyj@gmail.com>

This commit adds a sequence number to the IpnsEntry protobuf
that is used to determine which among a set of entries for the same key
is the 'most correct'.

GetValues has been added to the routing interface to retrieve a set of
records from the dht, for the caller to select from.

GetValue (singular) will call GetValues, select the 'best' record, and
then update that record to peers we received outdated records from.
This will help keep the dht consistent.

License: MIT
Signed-off-by: Jeromy <jeromyj@gmail.com>

License: MIT
Signed-off-by: Jeromy <jeromyj@gmail.com>

License: MIT
Signed-off-by: Jeromy <jeromyj@gmail.com>

License: MIT
Signed-off-by: rht <rhtbot@gmail.com>

use correct context for dht notifs

License: MIT
Signed-off-by: Karthik Bala <karthikbala444@gmail.com>

License: MIT
Signed-off-by: Jeromy <jeromyj@gmail.com>

License: MIT
Signed-off-by: Jeromy <jeromyj@gmail.com>

License: MIT
Signed-off-by: Jeromy <jeromyj@gmail.com>

License: MIT
Signed-off-by: Jeromy <jeromyj@gmail.com>

License: MIT
Signed-off-by: Jeromy <jeromyj@gmail.com>

License: MIT
Signed-off-by: Juan Batiz-Benet <juan@benet.ai>

License: MIT
Signed-off-by: rht <rhtbot@gmail.com>

License: MIT
Signed-off-by: rht <rhtbot@gmail.com>

License: MIT
Signed-off-by: rht <rhtbot@gmail.com>

License: MIT
Signed-off-by: rht <rhtbot@gmail.com>

And substitute the lines using Notice{,f} with Info{,f}

License: MIT
Signed-off-by: rht <rhtbot@gmail.com>

Except when there is an explicit os.Exit(1) after the Critical line,
then replace with Fatal{,f}.
golang's log and logrus already call os.Exit(1) by default with Fatal.

License: MIT
Signed-off-by: rht <rhtbot@gmail.com>

WIP: object creator command

better docs

move patch command into object namespace

dont ignore cancel funcs

addressing comment from CR

add two new subcommands to object patch and clean up main Run func

cancel contexts in early returns

switch to util.Key

address comments from CR

use map and array combo for better perf

We now consider debugerrors harmful: we've run into cases where
debugerror.Wrap() hid valuable error information (err == io.EOF?).
I've removed them from the main code, but left them in some tests.
Go errors are lacking, but unfortunately, this isn't the solution.

It is possible that debugerros.New or debugerrors.Errorf should
remain still (i.e. only remove debugerrors.Wrap) but we don't use
these errors often enough to keep.

reduce dht bandwidth consumption

- Modified Godeps/Godeps.json by hand
- [TEST] Updated welcome docs hash to sharness
- [TEST] Updated contact doc
- [TEST] disabled breaking test (t0080-repo refs local)

Signed-off-by: Jeromy <jeromyj@gmail.com>

move to a less aggressive period. 5m instead of 20s

this time just move to goprocess

closes #836