This adds a new "crdt" consensus component using go-ds-crdt.
This implies several refactors to fully make cluster consensus-component
independent:
* Delete mapstate and fully adopt dsstate (after people have migrated).
* Return errors from state methods rather than ignoring them.
* Add a new "datastore" modules so that we can configure datastores in the
main configuration like other components.
* Let the consensus components fully define the "state.State". Thus, they do
not receive the state, they receive the storage where we put the state (a
go-datastore).
* Allow to customize how the monitor component obtains Peers() (the current
peerset), including avoiding using the current peerset. At the moment the
crdt consensus uses the monitoring component to define the current peerset.
Therefore the monitor component cannot rely on the consensus component to
produce a peerset.
* Re-factor/re-implementation of "ipfs-cluster-service state"
operations. Includes the dissapearance of the "migrate" one.
The CRDT consensus component defines creates a crdt-datastore (with ipfs-lite)
and uses it to intitialize a dssate. Thus the crdt-store is elegantly
wrapped. Any modifications to the state get automatically replicated to other
peers. We store all the CRDT DAG blocks in the local datastore.
The consensus components only expose a ReadOnly state, as any modifications to
the shared state should happen through them.
DHT and PubSub facilities must now be created outside of Cluster and passed in
so they can be re-used by different components.
Remove basic monitor
This commit removes `basic` monitor component, because it is not being
used by default since few releases ago pubsub monitor was introduced.
Issue #689
This takes advantange of the latest features in go-cid, peer.ID and
go-multiaddr and makes the Go types serializable by default.
This means we no longer need to copy between Pin <-> PinSerial, or ID <->
IDSerial etc. We can now efficiently binary-encode these types using short
field keys and without parsing/stringifying (in many cases it just a cast).
We still get the same json output as before (with minor modifications for
Cids).
This should greatly improve Cluster performance and memory usage when dealing
with large collections of items.
License: MIT
Signed-off-by: Hector Sanjuan <hector@protocol.ai>
Get jsonConfig from Config, apply env vars to it, load jsonConfig
back into Config.
License: MIT
Signed-off-by: Robert Ignat <robert.ignat91@gmail.com>
* cluster and restapi configs can also get values from environment variables
* other config components don't read any values from the environment
License: MIT
Signed-off-by: Robert Ignat <robert.ignat91@gmail.com>
This commit adds support for OpenCensus tracing
and metrics collection. This required support for
context.Context propogation throughout the cluster
codebase, and in particular, the ipfscluster component
interfaces.
The tracing propogates across RPC and HTTP boundaries.
The current default tracing backend is Jaeger.
The metrics currently exports the metrics exposed by
the opencensus http plugin as well as the pprof metrics
to a prometheus endpoint for scraping.
The current default metrics backend is Prometheus.
Metrics are currently exposed by default due to low
overhead, can be turned off if desired, whereas tracing
is off by default as it has a much higher performance
overhead, though the extent of the performance hit can be
adjusted with smaller sampling rates.
License: MIT
Signed-off-by: Adrian Lanzafame <adrianlanzafame92@gmail.com>
Issue #572 exposes metrics but they carry the peer ID in binary.
This was ok with our internal codecs but it doesn't seem to work
very well with json, and makes the output format unusable.
This makes the Metric.Peer field a string.
Additinoally, fixes calling the command without arguments and displaying
the date in the right format.
License: MIT
Signed-off-by: Hector Sanjuan <code@hector.link>
GetTTL returns duration. SetTTL should take duration too, not seconds.
This removes the original SetTTL method which used seconds.
License: MIT
Signed-off-by: Hector Sanjuan <code@hector.link>
The monitor component should be in charge of deciding how it is
best to send metrics to other peers and what that means.
This adds the PublishMetric() method to the component interface
and moves that functionality from Cluster main component to the
basic monitor.
There is a behaviour change. Before, the metrics where sent only to
the leader, while the leader was the only peer to broadcast them everywhere.
Now, all peers broadcast all metrics everywhere. This is mostly
because we should not rely on the consensus layer providing a Leader(), so
we are taking the chance to remove this dependency.
Note that in any-case, pubsub monitoring should replace the
existing basic monitor. This is just paving the ground.
Additionally, in order to not duplicate the multiRPC code
in the monitor, I have moved that functionality to go-libp2p-gorpc
and added an rpcutil library to cluster which includes useful
methods to perform multiRPC requests (some of them existed in
util.go, others are new and help handling multiple contexts etc).
License: MIT
Signed-off-by: Hector Sanjuan <code@hector.link>
This enables support for testing in jenkins.
Several minor adjustments have been performed to improve the probability
that the tests pass, but there are still some random
problems appearing with libp2p conections not becoming available or
stopping working (similar to travis, but perhaps more often).
MacOS and Windows builds are broken in worse ways (those issues will
need to be addressed in the future).
Thanks to @zenground0 and @victorbjelkholm for support!
License: MIT
Signed-off-by: Hector Sanjuan <code@hector.link>
The following commit reimplements ipfs-cluster configuration under
the following premises:
* Each component is initialized with a configuration object
defined by its module
* Each component decides how the JSON representation of its
configuration looks like
* Each component parses and validates its own configuration
* Each component exposes its own defaults
* Component configurations are make the sections of a
central JSON configuration file (which replaces the current
JSON format)
* Component configurations implement a common interface
(config.ComponentConfig) with a set of common operations
* The central configuration file is managed by a
config.ConfigManager which:
* Registers ComponentConfigs
* Assigns the correspondent sections from the JSON file to each
component and delegates the parsing
* Delegates the JSON generation for each section
* Can be notified when the configuration is updated and must be
saved to disk
The new service.json would then look as follows:
```json
{
"cluster": {
"id": "QmTVW8NoRxC5wBhV7WtAYtRn7itipEESfozWN5KmXUQnk2",
"private_key": "<...>",
"secret": "00224102ae6aaf94f2606abf69a0e278251ecc1d64815b617ff19d6d2841f786",
"peers": [],
"bootstrap": [],
"leave_on_shutdown": false,
"listen_multiaddress": "/ip4/0.0.0.0/tcp/9096",
"state_sync_interval": "1m0s",
"ipfs_sync_interval": "2m10s",
"replication_factor": -1,
"monitor_ping_interval": "15s"
},
"consensus": {
"raft": {
"heartbeat_timeout": "1s",
"election_timeout": "1s",
"commit_timeout": "50ms",
"max_append_entries": 64,
"trailing_logs": 10240,
"snapshot_interval": "2m0s",
"snapshot_threshold": 8192,
"leader_lease_timeout": "500ms"
}
},
"api": {
"restapi": {
"listen_multiaddress": "/ip4/127.0.0.1/tcp/9094",
"read_timeout": "30s",
"read_header_timeout": "5s",
"write_timeout": "1m0s",
"idle_timeout": "2m0s"
}
},
"ipfs_connector": {
"ipfshttp": {
"proxy_listen_multiaddress": "/ip4/127.0.0.1/tcp/9095",
"node_multiaddress": "/ip4/127.0.0.1/tcp/5001",
"connect_swarms_delay": "7s",
"proxy_read_timeout": "10m0s",
"proxy_read_header_timeout": "5s",
"proxy_write_timeout": "10m0s",
"proxy_idle_timeout": "1m0s"
}
},
"monitor": {
"monbasic": {
"check_interval": "15s"
}
},
"informer": {
"disk": {
"metric_ttl": "30s",
"metric_type": "freespace"
},
"numpin": {
"metric_ttl": "10s"
}
}
}
```
This new format aims to be easily extensible per component. As such,
it already surfaces quite a few new options which were hardcoded
before.
Additionally, since Go API have changed, some redundant methods have been
removed and small refactoring has happened to take advantage of the new
way.
License: MIT
Signed-off-by: Hector Sanjuan <hector@protocol.ai>
It turns out they only worked in round seconds. Tests send a metric
every second, so sometimes they were expired right away.
License: MIT
Signed-off-by: Hector Sanjuan <hector@protocol.ai>
