The Qwt library contains GUI Components and utility classes which are primarily useful for programs with a technical background. Beside a 2D plot widget it provides scales, sliders, dials, compasses, thermometers, wheels and knobs to control or display values, arrays, or ranges of type double. This port installs Qt Designer plugin for Qwt library version 5. WWW: http://qwt.sourceforge.net ef='https://www.lant.com.tw/~lantw44/git/go-tangerine' title='go-tangerine Git repository'/>
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* p2p, swarm: fix node up races by granular locking (#18976)Ferenc Szabo2019-02-191-1/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | * swarm/network: DRY out repeated giga comment I not necessarily agree with the way we wait for event propagation. But I truly disagree with having duplicated giga comments. * p2p/simulations: encapsulate Node.Up field so we avoid data races The Node.Up field was accessed concurrently without "proper" locking. There was a lock on Network and that was used sometimes to access the field. Other times the locking was missed and we had a data race. For example: https://github.com/ethereum/go-ethereum/pull/18464 The case above was solved, but there were still intermittent/hard to reproduce races. So let's solve the issue permanently. resolves: ethersphere/go-ethereum#1146 * p2p/simulations: fix unmarshal of simulations.Node Making Node.Up field private in 13292ee897e345045fbfab3bda23a77589a271c1 broke TestHTTPNetwork and TestHTTPSnapshot. Because the default UnmarshalJSON does not handle unexported fields. Important: The fix is partial and not proper to my taste. But I cut scope as I think the fix may require a change to the current serialization format. New ticket: https://github.com/ethersphere/go-ethereum/issues/1177 * p2p/simulations: Add a sanity test case for Node.Config UnmarshalJSON * p2p/simulations: revert back to defer Unlock() pattern for Network It's a good patten to call `defer Unlock()` right after `Lock()` so (new) error cases won't miss to unlock. Let's get back to that pattern. The patten was abandoned in 85a79b3ad3c5863f8612d25c246bcfad339f36b7, while fixing a data race. That data race does not exist anymore, since the Node.Up field got hidden behind its own lock. * p2p/simulations: consistent naming for test providers Node.UnmarshalJSON * p2p/simulations: remove JSON annotation from private fields of Node As unexported fields are not serialized. * p2p/simulations: fix deadlock in Network.GetRandomDownNode() Problem: GetRandomDownNode() locks -> getDownNodeIDs() -> GetNodes() tries to lock -> deadlock On Network type, unexported functions must assume that `net.lock` is already acquired and should not call exported functions which might try to lock again. * p2p/simulations: ensure method conformity for Network Connect* methods were moved to p2p/simulations.Network from swarm/network/simulation. However these new methods did not follow the pattern of Network methods, i.e., all exported method locks the whole Network either for read or write. * p2p/simulations: fix deadlock during network shutdown `TestDiscoveryPersistenceSimulationSimAdapter` often got into deadlock. The execution was stuck on two locks, i.e, `Kademlia.lock` and `p2p/simulations.Network.lock`. Usually the test got stuck once in each 20 executions with high confidence. `Kademlia` was stuck in `Kademlia.EachAddr()` and `Network` in `Network.Stop()`. Solution: in `Network.Stop()` `net.lock` must be released before calling `node.Stop()` as stopping a node (somehow - I did not find the exact code path) causes `Network.InitConn()` to be called from `Kademlia.SuggestPeer()` and that blocks on `net.lock`. Related ticket: https://github.com/ethersphere/go-ethereum/issues/1223 * swarm/state: simplify if statement in DBStore.Put() * p2p/simulations: remove faulty godoc from private function The comment started with the wrong method name. The method is simple and self explanatory. Also, it's private. => Let's just remove the comment. (cherry picked from commit 50b872bf05b8644f14b9bea340092ced6968dd59)
* swarm/network: Saturation check for healthy networks (#19071)holisticode2019-02-191-3/+3
| | | | | | | | | | | | | | | | | | | | | | * swarm/network: new saturation for implementation * swarm/network: re-added saturation func in Kademlia as it is used elsewhere * swarm/network: saturation with higher MinBinSize * swarm/network: PeersPerBin with depth check * swarm/network: edited tests to pass new saturated check * swarm/network: minor fix saturated check * swarm/network/simulations/discovery: fixed renamed RPC call * swarm/network: renamed to isSaturated and returns bool * swarm/network: early depth check (cherry picked from commit 2af24724dd5f3ab1994001854eb32c6a19f9f64a)
* swarm: CI race detector test adjustments (#19017)Ferenc Szabo2019-02-191-1/+1
| | | | (cherry picked from commit 27e3f968194e2723279b60f71c79d4da9fc7577f)
* swarm/storage: fix test timeout with -race by increasing mget timeoutFerenc Szabo2019-02-191-3/+0
| | | | (cherry picked from commit 1c3aa8d9b12d6104ccddecc1711bc6be2f5b269d)
* swarm/network: rewrite of peer suggestion engine, fix skipped tests (#18404)Viktor TrĂ³n2019-02-191-7/+5
| | | | | | | | | | | | | | | | | | | | | | | | | | | | * swarm/network: fix skipped tests related to suggestPeer * swarm/network: rename depth to radius * swarm/network: uncomment assertHealth and improve comments * swarm/network: remove commented code * swarm/network: kademlia suggestPeer algo correction * swarm/network: kademlia suggest peer * simplify suggest Peer code * improve peer suggestion algo * add comments * kademlia testing improvements * assertHealth -> checkHealth (test helper) * testSuggestPeer -> checkSuggestPeer (test helper) * remove testSuggestPeerBug and TestKademliaCase * swarm/network: kademlia suggestPeer cleanup, improved comments * swarm/network: minor comment, discovery test default arg (cherry picked from commit bcb2594151c849d65108dd94e54b69067d117d7d)
* cmd/swarm/swarm-snapshot: swarm snapshot generator (#18453)Elad2019-02-191-76/+9
| | | | | | | | | | | | | | | | | | | | | | | | | | | | * cmd/swarm/swarm-snapshot: add binary to create network snapshots * cmd/swarm/swarm-snapshot: refactor and extend tests * p2p/simulations: remove unused triggerChecks func and fix linter * internal/cmdtest: raise the timeout for killing TestCmd * cmd/swarm/swarm-snapshot: add more comments and other minor adjustments * cmd/swarm/swarm-snapshot: remove redundant check in createSnapshot * cmd/swarm/swarm-snapshot: change comment wording * p2p/simulations: revert Simulation.Run from master https://github.com/ethersphere/go-ethereum/pull/1077/files#r247078904 * cmd/swarm/swarm-snapshot: address pr comments * swarm/network/simulations/discovery: removed snapshot write to file * cmd/swarm/swarm-snapshot, swarm/network/simulations: removed redundant connection event check, fixed lint error (cherry picked from commit 34f11e752f61b81c13cdde0649a3c7b14f801c69)
* swarm/network: Rename minproxbinsize, add as member of simulation (#18408)lash2019-01-102-6/+6
| | | | | | * swarm/network: Rename minproxbinsize, add as member of simulation * swarm/network: Deactivate WaitTillHealthy, unreliable pending suggestpeer
* swarm/network: Revised depth and health for Kademlia (#18354)lash2018-12-221-11/+26
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | * swarm/network: Revised depth calculation with tests * swarm/network: WIP remove redundant "full" function * swarm/network: WIP peerpot refactor * swarm/network: Make test methods submethod of peerpot and embed kad * swarm/network: Remove commented out code * swarm/network: Rename health test functions * swarm/network: Too many n's * swarm/network: Change hive Healthy func to accept addresses * swarm/network: Add Healthy proxy method for api in hive * swarm/network: Skip failing test out of scope for PR * swarm/network: Skip all tests dependent on SuggestPeers * swarm/network: Remove commented code and useless kad Pof member * swarm/network: Remove more unused code, add counter on depth test errors * swarm/network: WIP Create Healthy assertion tests * swarm/network: Roll back health related methods receiver change * swarm/network: Hardwire network minproxbinsize in swarm sim * swarm/network: Rework Health test to strict Pending add test for saturation And add test for as many as possible up to saturation * swarm/network: Skip discovery tests (dependent on SuggestPeer) * swarm/network: Remove useless minProxBinSize in stream * swarm/network: Remove unnecessary testing.T param to assert health * swarm/network: Implement t.Helper() in checkHealth * swarm/network: Rename check back to assert now that we have helper magic * swarm/network: Revert WaitTillHealthy change (deferred to nxt PR) * swarm/network: Kademlia tests GotNN => ConnectNN * swarm/network: Renames and comments * swarm/network: Add comments
* swarm/state: refactor InmemoryStore (#18143)Anton Evangelatov2018-11-211-2/+2
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* p2p/simulations, swarm/network: Custom services in snapshot (#17991)lash2018-11-121-6/+25
| | | | | | | | | | | | | | | | | | | | * p2p/simulations: Add custom services to simnodes + remove sim down conn objs * p2p/simulation, swarm/network: Add selective services to discovery sim * p2p/simulations, swarm/network: Remove useless comments * p2p/simulations, swarm/network: Clean up mess from rebase * p2p/simulation: Add sleep to prevent connect flakiness in http test * p2p/simulations: added concurrent goroutines to prevent sleeps on simulation connect/disconnect * p2p/simulations, swarm/network/simulations: address pr comments * reinstated dummy service * fixed http snapshot test
* p2p/simulations: fix a deadlock and clean up adapters (#17891)Felix Lange2018-10-121-18/+1
| | | | | | | | | | | | | | | | | | | | | | | | This fixes a rare deadlock with the inproc adapter: - A node is stopped, which acquires Network.lock. - The protocol code being simulated (swarm/network in my case) waits for its goroutines to shut down. - One of those goroutines calls into the simulation to add a peer, which waits for Network.lock. The fix for the deadlock is really simple, just release the lock before stopping the simulation node. Other changes in this PR clean up the exec adapter so it reports node startup errors better and remove the docker adapter because it just adds overhead. In the exec adapter, node information is now posted to a one-shot server. This avoids log parsing and allows reporting startup errors to the simulation host. A small change in package node was needed because simulation nodes use port zero. Node.{HTTP,WS}Endpoint now return the live endpoints after startup by checking the TCP listener.