| Commit message (Collapse) | Author | Age | Files | Lines |
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Implements the `gc-mark-stream` command to allow for marking equivalence entries
in batch, by making use of stream mode communication to the server.
The aim of this is to improve efficiency by reducing the impact of latency when
marking a high volume of hash entries.
Example usage of the new `gc-mark-stream` command:
```
$ cat << HASHES | \
./bin/bitbake-hashclient --address "ws://localhost:8688/ws" gc-mark-stream "alive"
unihash f37918cc02eb5a520b1aff86faacbc0a38124646
unihash af36b199320e611fbb16f1f277d3ee1d619ca58b
taskhash a1117c1f5a7c9ab2f5a39cc6fe5e6152169d09c0 method oe.sstatesig.OEOuthashBasic
HASHES
```
(Bitbake rev: c84715f28cd36666ea07a179d91b8c32ea0df8e7)
Signed-off-by: Alexander Marques <c137.marques@gmail.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>
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Adds API to check if the server is aware of the existence of a given
unihash. This can be used as an optimization for sstate where a client
can query the hash equivalence server to check if a unihash exists
before querying the sstate cache. If the hash server isn't aware of the
existence of a unihash, then there is very likely not a matching sstate
object, so this should be able to significantly cut down on the number
of negative hits on the sstate cache.
(Bitbake rev: cfe0ac071cfb998e4a1dd263f8860b140843361a)
Signed-off-by: Joshua Watt <JPEWhacker@gmail.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>
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Adds support for removing unused unihashes from the database. This is
done using a "mark and sweep" style of garbage collection where a
collection is started by marking which unihashes should be kept in the
database, then performing a sweep to remove any unmarked hashes.
(Bitbake rev: 433d4a075a1acfbd2a2913061739353a84bb01ed)
Signed-off-by: Joshua Watt <JPEWhacker@gmail.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>
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If a user is authenticated with the server, report them as the owner of
a report
(Bitbake rev: a9fd4a45bb6e5ac9832835897f594f3bbf67e1aa)
Signed-off-by: Joshua Watt <JPEWhacker@gmail.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>
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Allows users to self-service deletion of their own user accounts
(meaning, they can delete their own accounts without special
permissions).
(Bitbake rev: 2d4439948a5328a9768bca9eaec221eb82af3cb2)
Signed-off-by: Joshua Watt <JPEWhacker@gmail.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>
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Adds an API to retrieve the columns that can be queried on from the
database backend. This prevents front end applications from needing to
hardcode the query columns
(Bitbake rev: abfce2b68bdab02ea2e9a63fbb3b9e270428a0a6)
Signed-off-by: Joshua Watt <JPEWhacker@gmail.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>
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Adds an API to query the server for the usage of the database (e.g. how
many rows are present in each table)
(Bitbake rev: c9c1224447e147e0de92953bc85cea75670b898c)
Signed-off-by: Joshua Watt <JPEWhacker@gmail.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>
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Adds API that allows a user admin to impersonate another user in the
system. This makes it easier to write external services that have
external authentication, since they can use a common user account to
access the server, then impersonate the logged in user.
(Bitbake rev: 71e2f5b52b686f34df364ae1f2fc058f45cd5e18)
Signed-off-by: Joshua Watt <JPEWhacker@gmail.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>
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Adds support for the hashserver to have per-user permissions. User
management is done via a new "auth" RPC API where a client can
authenticate itself with the server using a randomly generated token.
The user can then be given permissions to read, report, manage the
database, or manage other users.
In addition to explicit user logins, the server supports anonymous users
which is what all users start as before they make the "auth" RPC call.
Anonymous users can be assigned a set of permissions by the server,
making it unnecessary for users to authenticate to use the server. The
set of Anonymous permissions defines the default behavior of the server,
for example if set to "@read", Anonymous users are unable to report
equivalent hashes with authenticating. Similarly, setting the Anonymous
permissions to "@none" would require authentication for users to perform
any action.
User creation and management is entirely manual (although
bitbake-hashclient is very useful as a front end). There are many
different mechanisms that could be implemented to allow user
self-registration (e.g. OAuth, LDAP, etc.), and implementing these is
outside the scope of the server. Instead, it is recommended to
implement a registration service that validates users against the
necessary service, then adds them as a user in the hash equivalence
server.
(Bitbake rev: 69e5417413ee2414fffaa7dd38057573bac56e35)
Signed-off-by: Joshua Watt <JPEWhacker@gmail.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>
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When the hash equivalence server is in read-only mode, it should still
return a unihash for a given "report" call if there is one.
(Bitbake rev: d0bbb98553f5f3451606bd5f089b36cfe4219dc2)
Signed-off-by: Joshua Watt <JPEWhacker@gmail.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>
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Abstracts the way the database backend is accessed by the hash
equivalence server to make it possible to use other backends
(Bitbake rev: 04b53deacf857488408bc82b9890b1e19874b5f1)
Signed-off-by: Joshua Watt <JPEWhacker@gmail.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>
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Adds a logging adaptor to the asyncrpc clients that prefixes log
messages with the client remote address to aid in debugging
(Bitbake rev: f4d64ce73c2449c008ff5d9b32376a2893ef7195)
Signed-off-by: Joshua Watt <JPEWhacker@gmail.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>
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Rewrites the asyncrpc client and server code to make it possible to have
other transport backends that are not stream based (e.g. websockets
which are message based). The connection handling classes are now shared
between both the client and server to make it easier to implement new
transport mechanisms
(Bitbake rev: 2aaeae53696e4c2f13a169830c3b7089cbad6eca)
Signed-off-by: Joshua Watt <JPEWhacker@gmail.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>
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Adds an API to remove unused entries in the outhash database based on
age and if they are referenced by any unihash
(Bitbake rev: a169ac523d166c6cbba918b152a76782176c3e88)
Signed-off-by: Joshua Watt <JPEWhacker@gmail.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>
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Extends the get_outhash API with a flag indicating whether to include
the unihash in the output. This is means that the query doesn't require
the unihash entry to be present to return a result
(Bitbake rev: b8d6abfeb4a0765727a62b3d8d83276335c7c7d6)
Signed-off-by: Joshua Watt <JPEWhacker@gmail.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>
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Adds a `remove` API to the client and server that can be used to remove
hash equivalence entries that match a particular critera
(Bitbake rev: 861d068b3a9fb5e91a01dbec54996a5a6f93ef29)
Signed-off-by: Joshua Watt <JPEWhacker@gmail.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>
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We have a choice of policy with hashequivalence - whether to reduce
sstate duplication in the sstate feed to a minimum or have maximal
sstate reuse from the user's perspective.
The challenge is that non-matching outhashes are generated due to
determinism issues, or due to differences in host gcc version,
architecture and so on and the question is how to reconcile then.
The approach before this patch is that any new match is added and
matches can update. This has the side effect that a queried value
from the server can change due to the replacement and you may not
always get the same value from the server. With the client side
caching bitbake has, this can be suboptimal and when using the
autobuilder sstate feed, it results in poor artefact reuse.
This patch switches to the other possible behaviour, once a hash is
assigned, it doesn't change. This means some sstate artefacts may be
duplicated but dependency chains aren't invalidated which I suspect
may give better overall performance.
Update the tests to match the new behaviour.
(Bitbake rev: 20d6ac753efa364349100cdc863e5eabec8e5b78)
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>
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Fixes the hashequivalence server to resolve the diverging report race
error. This error occurs when the same task(hash) is run simultaneous on
two different builders, and then the results are reported back but the
hashes diverge (e.g. have different outhashes), and one outhash is
equivalent to a hash and another is not. If taskhash was not originally
in the database, the client will fallback to using the taskhash as the
suggested unihash and the server will see reports come in like:
taskhash: A
unihash: A
outhash: B
taskhash: C
unihash: C
outhash: B
taskhash: C
unihash: C
outhash: D
Note that the second and third reports are the same taskhash, with
diverging outhashes.
Taskhash C should be equivalent to taskhash (and unihash) A because they
share an outhash B, but the server would not do this when tasks were
reported in the order shown.
It became clear while trying to fix this that single large table to
store all reported hashes was going to make these updates difficult
since updating the unihash of all entries would be complex and time
consuming. Instead, it makes more sense to split apart the database into
two tables: One that maps taskhashes to unihashes and one that maps
outhashes to taskhashes. This should hopefully improve the parsing query
times as well since they only care about the taskhashes to unihashes
table, at the cost of more complex INNER JOIN queries on the lesser used
API.
Note this change does delete existing hash equivlance data and starts a
new database table rather than converting existing data.
(Bitbake rev: dff5a17558e2476064e85f35bad1fd65fec23600)
Signed-off-by: Joshua Watt <JPEWhacker@gmail.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>
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Reworks the async I/O API so that the async loop is only created in the
child process. This requires deferring the creation of the server until
the child process and a queue to transfer the bound address back to the
parent process
(Bitbake rev: 8555869cde39f9e9a9ced5a3e5788209640f6d50)
Signed-off-by: Joshua Watt <JPEWhacker@gmail.com>
[small loop -> self.loop fix in serv.py]
Signed-off-by: Scott Murray <scott.murray@konsulko.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>
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remove unused vars.
(Bitbake rev: 3287d28a506f67abd192799e61ef28e74ce7002d)
Signed-off-by: Armin Kuster <akuster808@gmail.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>
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The asyncrpc module can now be used to provide the json & asyncio based
RPC system used by hashserv.
(Bitbake rev: 5afb9586b0a4a23a05efb0e8ff4a97262631ae4a)
Signed-off-by: Paul Barker <pbarker@konsulko.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>
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The get-outhash message can be sent via the get_outhash client method.
This works in a similar way to the get message but looks up a db entry
by outhash rather than by taskhash. It is intended to be used as a
read-only form of the report message.
As both handle_get_outhash and handle_report use the same query string
we can factor this out.
(Bitbake rev: dc19606ada29a4d8afde4fcecd8ec986b47b867e)
Signed-off-by: Paul Barker <pbarker@konsulko.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>
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Use the new get-outhash message to perform a read-only query against an
upstream server (if present) when a reported taskhash/outhash
combination is not found in the current database. If a matching entry is
found upstream it is copied into the current database so it can be found
by future queries.
(Bitbake rev: 2be4f7f0d2ccb09917398289e8140e1467e84bb2)
Signed-off-by: Paul Barker <pbarker@konsulko.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>
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The -r/--readonly argument is added to the bitbake-hashserv app. If this
argument is given then clients may only perform read operations against
the server. The read-only mode is implemented by simply not installing
handlers for write operations, this keeps the permission model simple
and reduces the risk of accidentally allowing write operations.
As a sqlite database can be safely opened by multiple processes in
parallel, it's possible to start two hashserv instances against a single
database if you wish to export both a read-only port and a read-write
port.
(Bitbake rev: 492bb02eb0e071c792407ac3113f92492da1a9cc)
Signed-off-by: Paul Barker <pbarker@konsulko.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>
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Adds support for an upstream server to be specified. The upstream server
will be queried for equivalent hashes whenever a miss is found in the
local server. If the server returns a match, it is merged into the
local database. In order to keep the get stream queries as fast as
possible since they are the critical path when bitbake is preparing the
run queue, missing tasks provided by the server are not immediately
pulled from the upstream server, but instead are put into a queue to be
backfilled by a worker task later.
(Bitbake rev: e6d6c0b39393e9bdf378c1eba141f815e26b724b)
Signed-off-by: Joshua Watt <JPEWhacker@gmail.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>
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The hash equivalence client and server can occasionally send messages
that are too large for the server to fit in the receive buffer (64 KB).
To prevent this, support is added to the protocol to "chunkify" the
stream and break it up into manageable pieces that the server can each
side can back together.
Ideally, this would be negotiated by the client and server, but it's
currently hard coded to 32 KB to prevent the round-trip delay.
(Bitbake rev: e27a28c1e40e886ee68ba4b99b537ffc9c3577d4)
Signed-off-by: Joshua Watt <JPEWhacker@gmail.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>
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The reason for this should be recorded in the commit logs. Imagine
you have a target recipe (e.g. meta-extsdk-toolchain) which depends on
gdb-cross. sstate in OE-Core allows gdb-cross to have the same hash
regardless of whether its built on x86 or arm. The outhash will be
different.
We need hashequiv to be able to adapt to the prescence of sstate artefacts
for meta-extsdk-toolchain and allow the hashes to re-intersect, rather than
trying to force a rebuild of meta-extsdk-toolchain. By this point in the build,
it would have already been installed from sstate so the build needs to adapt.
Equivalent hashes should be reported to the server as a taskhash that
needs to map to an specific unihash. This patch adds API to the hashserv
client/server to allow this.
[Thanks to Joshua Watt for help with this patch]
(Bitbake rev: 674692fd46a7691a1de59ace6af0556cc5dd6a71)
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>
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Reworks the hash equivalence server to address performance issues that
were encountered with the REST mechanism used previously, particularly
during the heavy request load encountered during signature generation.
Notable changes are:
1) The server protocol is no longer HTTP based. Instead, it uses a
simpler JSON over a streaming protocol link. This protocol has much
lower overhead than HTTP since it eliminates the HTTP headers.
2) The hash equivalence server can either bind to a TCP port, or a Unix
domain socket. Unix domain sockets are more efficient for local
communication, and so are preferred if the user enables hash
equivalence only for the local build. The arguments to the
'bitbake-hashserve' command have been updated accordingly.
3) The value to which BB_HASHSERVE should be set to enable a local hash
equivalence server is changed to "auto" instead of "localhost:0". The
latter didn't make sense when the local server was using a Unix
domain socket.
4) Clients are expected to keep a persistent connection to the server
instead of creating a new connection each time a request is made for
optimal performance.
5) Most of the client logic has been moved to the hashserve module in
bitbake. This makes it easier to share the client code.
6) A new bitbake command has been added called 'bitbake-hashclient'.
This command can be used to query a hash equivalence server, including
fetching the statistics and running a performance stress test.
7) The table indexes in the SQLite database have been updated to
optimize hash lookups. This change is backward compatible, as the
database will delete the old indexes first if they exist.
8) The server has been reworked to use python async to maximize
performance with persistently connected clients. This requires Python
3.5 or later.
(Bitbake rev: 2124eec3a5830afe8e07ffb6f2a0df6a417ac973)
Signed-off-by: Joshua Watt <JPEWhacker@gmail.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>
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