func (spec specCommit) Resolve(g system.CoreGraph, mid uint64, src system.VertexTuple) (e system.StdEdge, success bool) {
e = system.StdEdge{
Source: src.ID,
Props: ps.NewMap(),
EType: "version",
}
e.Props = e.Props.Set("sha1", system.Property{MsgSrc: mid, Value: spec.Sha1})
re := g.OutWith(src.ID, q.Qbe(system.EType("version")))
if len(re) > 0 {
sha1, _ := re[0].Props.Lookup("sha1")
e.ID = re[0].ID // FIXME setting the id to non-0 AND failing is currently unhandled
if sha1.(system.Property).Value == spec.Sha1 {
success = true
e.Target = re[0].Target
} else {
rv := g.VerticesWith(q.Qbv(system.VType("commit"), "sha1", spec.Sha1))
if len(rv) == 1 {
success = true
e.Target = rv[0].ID
}
}
} else {
rv := g.VerticesWith(q.Qbv(system.VType("commit"), "sha1", spec.Sha1))
if len(rv) == 1 {
success = true
e.Target = rv[0].ID
}
}
return
}
func (spec specUnixDomainListener) Resolve(g system.CoreGraph, mid uint64, src system.VertexTuple) (e system.StdEdge, success bool) {
// check for existing edge; this one is quite straightforward
re := g.OutWith(src.ID, q.Qbe(system.EType("listening"), "type", "unix", "path", spec.Path))
if len(re) == 1 {
return re[0], true
}
e = system.StdEdge{
Source: src.ID,
Props: ps.NewMap(),
EType: "listening",
}
e.Props = e.Props.Set("path", system.Property{MsgSrc: mid, Value: spec.Path})
envid, _, hasenv := findEnv(g, src)
if hasenv {
rv := g.PredecessorsWith(envid, q.Qbv(system.VType("comm"), "type", "unix", "path", spec.Path))
if len(rv) == 1 {
success = true
e.Target = rv[0].ID
}
}
return
}
func (spec specParentDataset) Resolve(g system.CoreGraph, mid uint64, src system.VertexTuple) (e system.StdEdge, success bool) {
e = system.StdEdge{
Source: src.ID,
Props: ps.NewMap(),
EType: "dataset-gateway",
}
e.Props = e.Props.Set("name", system.Property{MsgSrc: mid, Value: spec.Name})
// check for existing link - there can be only be one
re := g.OutWith(src.ID, q.Qbe(system.EType("dataset-gateway")))
if len(re) == 1 {
success = true
e = re[0]
// TODO semantics should preclude this from being able to change, but doing it dirty means force-setting it anyway for now
} else {
// no existing link found; search for proc directly
envid, _, _ := findEnv(g, src)
rv := g.PredecessorsWith(envid, q.Qbv(system.VType("parent-dataset"), "name", spec.Name))
if len(rv) != 0 { // >1 shouldn't be possible
success = true
e.Target = rv[0].ID
}
}
return
}
func (spec specGitCommitParent) Resolve(g system.CoreGraph, mid uint64, src system.VertexTuple) (e system.StdEdge, success bool) {
e = system.StdEdge{
Source: src.ID,
Props: ps.NewMap(),
EType: "parent-commit",
}
re := g.OutWith(src.ID, q.Qbe(system.EType("parent-commit"), "pnum", spec.ParentNum))
if len(re) > 0 {
success = true
e.Target = re[0].Target
e.Props = re[0].Props
// FIXME evidence of a problem here - since we're using pnum as the deduping identifier, there's no
// way it could also sensibly change its MsgSrc value. This is very much a product of the intensional/extensional
// identity problem: what does it mean to have the identifying data change? is it now a new thing? was it the old thing,
// and it underwent a transition into the new thing? or is there no distinction between the old and new thing?
e.Props = e.Props.Set("sha1", system.Property{MsgSrc: mid, Value: spec.Sha1})
e.ID = re[0].ID
} else {
rv := g.VerticesWith(q.Qbv(system.VType("commit"), "sha1", spec.Sha1))
if len(rv) == 1 {
success = true
e.Target = rv[0].ID
e.Props = e.Props.Set("pnum", system.Property{MsgSrc: mid, Value: spec.ParentNum})
e.Props = e.Props.Set("sha1", system.Property{MsgSrc: mid, Value: spec.Sha1})
}
}
return
}
func (spec EnvLink) Resolve(g system.CoreGraph, mid uint64, src system.VertexTuple) (e system.StdEdge, success bool) {
_, e, success = findEnv(g, src)
// Whether we find a match or not, have to merge in the EnvLink
e.Props = maputil.FillPropMap(mid, false,
pp("hostname", spec.Address.Hostname),
pp("ipv4", spec.Address.Ipv4),
pp("ipv6", spec.Address.Ipv6),
pp("nick", spec.Nick),
)
// If we already found the matching edge, bail out now
if success {
return
}
rv := g.VerticesWith(q.Qbv(system.VType("environment")))
for _, vt := range rv {
// TODO this'll be cross-package eventually - reorg needed
if maputil.AnyMatch(e.Props, vt.Vertex.Properties, "nick", "hostname", "ipv4", "ipv6") {
success = true
e.Target = vt.ID
break
}
}
return
}
func (spec specLocalLogic) Resolve(g system.CoreGraph, mid uint64, src system.VertexTuple) (e system.StdEdge, success bool) {
e = system.StdEdge{
Source: src.ID,
Props: ps.NewMap(),
EType: "logic-link",
}
// search for existing link
re := g.OutWith(src.ID, q.Qbe(system.EType("logic-link"), "path", spec.Path))
if len(re) == 1 {
// TODO don't set the path prop again, it's the unique id...meh, same question here w/uniqueness as above
success = true
e = re[0]
return
}
// no existing link found, search for proc directly
envid, _, _ := findEnv(g, src)
rv := g.PredecessorsWith(envid, q.Qbv(system.VType("logic-state"), "path", spec.Path))
if len(rv) == 1 {
success = true
e.Target = rv[0].ID
}
return
}
func commitUnify(g system.CoreGraph, u system.UnifyInstructionForm) uint64 {
candidates := g.VerticesWith(q.Qbv(system.VType("commit"), "sha1", u.Vertex().Properties()["sha1"]))
if len(candidates) > 0 { // there can be only one
return candidates[0].ID
}
return 0
}
func processUnify(g system.CoreGraph, u system.UnifyInstructionForm) uint64 {
// only one scoping edge - the envlink
edge, success := u.ScopingSpecs()[0].(EnvLink).Resolve(g, 0, emptyVT(u.Vertex()))
if !success {
// FIXME scoping edge resolution failure does not mean no match - there could be an orphan
return 0
}
return findMatchingEnvId(g, edge, g.VerticesWith(q.Qbv(system.VType("process"), "pid", u.Vertex().Properties()["pid"])))
}
func findEnvironment(g system.CoreGraph, props ps.Map) (envid uint64, success bool) {
rv := g.VerticesWith(q.Qbv(system.VType("environment")))
for _, vt := range rv {
if maputil.AnyMatch(props, vt.Vertex.Props(), "hostname", "ipv4", "ipv6", "nick") {
return vt.ID, true
}
}
return
}
func parentDatasetUnify(g system.CoreGraph, u system.UnifyInstructionForm) uint64 {
edge, success := u.ScopingSpecs()[0].(EnvLink).Resolve(g, 0, emptyVT(u.Vertex()))
if !success {
// FIXME scoping edge resolution failure does not mean no match - there could be an orphan
return 0
}
props := u.Vertex().Properties()
return findMatchingEnvId(g, edge, g.VerticesWith(q.Qbv(system.VType("parent-dataset"), "path", props["path"], "name", props["name"])))
}
func envUnify(g system.CoreGraph, u system.UnifyInstructionForm) uint64 {
matches := g.VerticesWith(q.Qbv(system.VType("environment")))
for _, e := range matches {
if maputil.AnyMatch(e.Vertex.Properties, u.Vertex().Properties(), "hostname", "ipv4", "ipv6") {
return e.ID
}
}
return 0
}
func TestVerticesWith(t *testing.T) {
g := getGraphFixture()
var result system.VertexTupleVector
result = g.VerticesWith(q.Qbv())
if len(result) != 5 {
t.Errorf("Should find 4 vertices with no filter; found %v", len(result))
}
result = g.VerticesWith(q.Qbv(system.VType("env")))
if len(result) != 2 {
t.Errorf("Should find 2 vertices when filtering to type env; found %v", len(result))
}
result = g.VerticesWith(q.Qbv(system.VType("nonexistent-type")))
if len(result) != 0 {
t.Errorf("Should find no vertices when filtering on type that's not present; found %v", len(result))
}
result = g.VerticesWith(q.Qbv(system.VTypeNone, "prop1", "bar"))
if len(result) != 2 {
t.Errorf("Should find two vertices with prop1 == \"bar\"; found %v", len(result))
}
result = g.VerticesWith(q.Qbv(system.VTypeNone, "none-have-this-prop-key", "doesn't matter"))
if len(result) != 0 {
t.Errorf("Should find no vertices when filtering on nonexistent prop key; found %v", len(result))
}
result = g.VerticesWith(q.Qbv(system.VType("env"), "prop1", "foo"))
if len(result) != 1 {
t.Errorf("Should find one vertex when filtering to env types and with prop1 == \"foo\"; found %v", len(result))
}
result = g.VerticesWith(q.Qbv(system.VType("env"), "prop2", 42))
if len(result) != 1 {
t.Errorf("Should find one vertex when filtering to env types and with prop2 == 42; found %v", len(result))
}
}
func commUnify(g system.CoreGraph, u system.UnifyInstructionForm) uint64 {
// only one scoping edge - the envlink
edge, success := u.ScopingSpecs()[0].(EnvLink).Resolve(g, 0, emptyVT(u.Vertex()))
if !success {
// FIXME scoping edge resolution failure does not mean no match - there could be an orphan
return 0
}
vp := u.Vertex().Properties()
typ, _ := vp["type"]
path, haspath := vp["path"]
if haspath {
return findMatchingEnvId(g, edge, g.VerticesWith(q.Qbv(system.VType("comm"),
"type", typ,
"path", path)))
} else {
port, _ := vp["port"]
return findMatchingEnvId(g, edge, g.VerticesWith(q.Qbv(system.VType("comm"),
"type", typ,
"port", port)))
}
}
func pkgYumUnify(g system.CoreGraph, u system.UnifyInstructionForm) uint64 {
props := u.Vertex().Properties()
vtv := g.VerticesWith(q.Qbv(system.VType("pkg-yum"),
"name", props["name"],
"version", props["version"],
"arch", props["arch"],
"epoch", props["epoch"],
))
if len(vtv) > 0 {
return vtv[0].ID
}
return 0
}
func TestQbv(t *testing.T) {
// ensure implement both VFilter and EFilter interfaces, and the V chainer
var _ system.VFilterChain = vertexFilter{}
var _ system.VEFilter = vertexFilter{}
assert.Equal(t, Qbv(), vertexFilter{}, "qbv with no args creates an empty vertexFilter")
assert.Equal(t, Qbv(), vertexFilter{vtype: system.VTypeNone}, "qbv with no args creates equivalent of passing VTypeNone as first arg")
assert.Equal(t,
Qbv(system.VType("foo")),
vertexFilter{vtype: system.VType("foo")},
"qbv with single arg assigns to VType struct prop")
assert.Equal(t,
Qbv(system.VTypeNone, "foo"),
vertexFilter{vtype: system.VTypeNone},
"qbv with two args ignores second (unpaired) arg")
assert.Equal(t,
Qbv(system.VTypeNone, "foo", "bar"),
vertexFilter{vtype: system.VTypeNone, props: []system.PropPair{{"foo", "bar"}}},
"qbv with three args creates one pair of second (key) and third (value) args")
assert.Equal(t,
Qbv(system.VTypeNone, "foo", "bar", "baz"),
vertexFilter{vtype: system.VTypeNone, props: []system.PropPair{{"foo", "bar"}}},
"qbv with four args creates one pair from 2nd and 3rd args, ignores 4th")
// ensure that some incorrect things owing to loose typing correctly panic
assert.Panics(t, func() {
Qbv("foo")
}, "qbv panics on type conversion when passing a string instead of VType")
assert.Panics(t, func() {
Qbv(system.VTypeNone, 1, "foo")
}, "qbv panics on type conversion when second argument (with corresponding pair val 3rd arg) is non-string")
assert.Panics(t, func() {
Qbv(system.VTypeNone, "foo", "bar", 1, "baz")
}, "qbv panics on type conversion when Nth even argument (with corresponding pair val N+1 arg) is non-string")
}
func datasetUnify(g system.CoreGraph, u system.UnifyInstructionForm) uint64 {
vtv := g.VerticesWith(q.Qbv(system.VType("dataset"), "name", u.Vertex().Properties()["name"]))
if len(vtv) == 0 {
return 0
}
spec := u.ScopingSpecs()[0].(specDatasetHierarchy)
el, success := spec.Environment.Resolve(g, 0, emptyVT(u.Vertex()))
// FIXME scoping edge resolution failure does not mean no match - there could be an orphan
if success {
for _, vt := range vtv {
if id := findMatchingEnvId(g, el, g.SuccessorsWith(vt.ID, q.Qbe(system.EType("dataset-hierarchy")))); id != 0 {
return vt.ID
}
}
}
return 0
}
func findDataset(g system.CoreGraph, envid uint64, name []string) (id uint64, success bool) {
// first time through use the parent type
vtype := system.VType("parent-dataset")
id = envid
var n string
for len(name) > 0 {
n, name = name[0], name[1:]
rv := g.PredecessorsWith(id, q.Qbv(vtype, "name", n))
vtype = "dataset"
if len(rv) != 1 {
return 0, false
}
id = rv[0].ID
}
return id, true
}
// Tests adjacentWith(), which effectively tests SuccessorsWith() and PredecessorsWith()
func TestAdjacentWith(t *testing.T) {
g := getGraphFixture()
var result system.VertexTupleVector
// basic, unfiltered tests first to ensure the right data is coming through
// vtx 2 has just one in-edge
result = g.adjacentWith(2, q.Qbv(), true)
if len(result) != 1 {
t.Errorf("Vertex 2 has one predecessor, but got %v vertices", len(result))
}
result = g.PredecessorsWith(2, q.Qbv())
if len(result) != 1 {
t.Errorf("Vertex 2 has one predecessor, but got %v vertices", len(result))
}
// vtx 1 has one out-edge and one in-edge
result = g.adjacentWith(1, q.Qbv(), false)
if len(result) != 1 {
t.Errorf("Vertex 1 has one successor, but got %v vertices", len(result))
}
result = g.SuccessorsWith(1, q.Qbv())
if len(result) != 1 {
t.Errorf("Vertex 1 has one successor, but got %v vertices", len(result))
}
// vtx 5 is an isolate
result = g.adjacentWith(5, q.Qbv(), true)
if len(result) != 0 {
t.Errorf("Vertex 5 has no predecessors, but got %v vertices", len(result))
}
result = g.PredecessorsWith(5, q.Qbv())
if len(result) != 0 {
t.Errorf("Vertex 5 has no predecessors, but got %v vertices", len(result))
}
result = g.adjacentWith(5, q.Qbv(), false)
if len(result) != 0 {
t.Errorf("Vertex 5 has no successors, but got %v vertices", len(result))
}
result = g.SuccessorsWith(5, q.Qbv())
if len(result) != 0 {
t.Errorf("Vertex 5 has no successors, but got %v vertices", len(result))
}
// qbe w/out args should be equivalent
result = g.PredecessorsWith(2, q.Qbe())
if len(result) != 1 {
t.Errorf("Vertex 2 has one predecessor, but got %v vertices (qbe)", len(result))
}
result = g.SuccessorsWith(1, q.Qbe())
if len(result) != 1 {
t.Errorf("Vertex 1 has one successor, but got %v vertices (qbe)", len(result))
}
// deduping: vtx 4 has two in-edges and none out, but those edges are parallel so only one unique vtx
result = g.PredecessorsWith(4, q.Qbv())
if len(result) != 1 {
t.Errorf("Vertex 4 has two in-edges, but only one unique predecessor; however, got %v vertices", len(result))
}
// vtx 3 is on the other side of vtx 4 - three out-edges, but only two uniques
result = g.SuccessorsWith(3, q.Qbv())
if len(result) != 2 {
t.Errorf("Vertex 4 has three out-edges, but only two unique successors; however, got %v vertices", len(result))
}
// filter checks, beginning with edge and/or vertex typing
result = g.SuccessorsWith(3, q.Qbv(system.VType("vt3")))
if len(result) != 1 {
t.Errorf("Vertex 4 has only one unique successor of type \"vt3\"; however, got %v vertices", len(result))
}
result = g.SuccessorsWith(3, q.Qbe(system.EType("dummy-edge-type2")))
if len(result) != 2 {
t.Errorf("Vertex 4 has two out-edges of \"dummy-edge-type2\" and both point to different vertices, so expecting 2, but got %v vertices", len(result))
}
result = g.SuccessorsWith(3, q.Qbe(system.EType("dummy-edge-type2")).And(q.Qbv(system.VType("env"))))
if len(result) != 1 {
t.Errorf("Vertex 4 has two unique successors along \"dummy-edge-type2\" out-edges, but only one is vtype \"env\". However, got %v vertices", len(result))
}
result = g.SuccessorsWith(3, q.Qbe(system.EType("dummy-edge-type3")).And(q.Qbv(system.VType("env"))))
if len(result) != 0 {
t.Errorf("Vertex 4 has one unique successor along \"dummy-edge-type3\" out-edges, but it is not an \"env\" type. However, got %v vertices", len(result))
}
// prop-filtering checks
result = g.SuccessorsWith(3, q.Qbv(system.VTypeNone, "prop2", 42))
if len(result) != 2 {
t.Errorf("Vertex 4 has only two unique successors with \"prop2\" at 42; however, got %v vertices", len(result))
}
result = g.SuccessorsWith(3, q.Qbe(system.ETypeNone, "eprop2", "bar"))
if len(result) != 2 {
t.Errorf("Vertex 4 has two unique successors connected by two out-edges with \"eprop2\" at \"bar\"; however, got %v vertices", len(result))
}
result = g.SuccessorsWith(3, q.Qbv(system.VTypeNone, "prop1", "baz", "prop2", 42))
if len(result) != 1 {
t.Errorf("Vertex 4 has only one unique successor with \"prop1\" at \"baz\" and \"prop2\" at 42; however, got %v vertices", len(result))
}
result = g.SuccessorsWith(3, q.Qbv(system.VTypeNone, "prop3", "qux", "prop2", 42))
if len(result) != 1 {
t.Errorf("Vertex 4 has only one unique successor with BOTH \"prop3\" at \"qux\" and \"prop2\" at 42; however, got %v vertices", len(result))
}
result = g.SuccessorsWith(3, q.Qbe(system.ETypeNone, "eprop2", "bar").And(q.Qbv(system.VTypeNone, "prop1", "baz")))
if len(result) != 1 {
t.Errorf("Vertex 4 has only one unique successor with \"prop1\" at \"baz\" along an out-edge with \"eprop2\" at \"bar\"; however, got %v vertices", len(result))
}
result = g.SuccessorsWith(3, q.Qbe(system.ETypeNone, "eprop2", "bar").And(q.Qbv(system.VType("vt3"), "prop1", "baz")))
if len(result) != 1 {
t.Errorf("Vertex 4 has one unique successor of type \"vt3\" with \"prop1\" at \"baz\" along an out-edge with \"eprop2\" at \"bar\"; however, got %v vertices", len(result))
}
}
func (spec DataLink) Resolve(g system.CoreGraph, mid uint64, src system.VertexTuple) (e system.StdEdge, success bool) {
e = system.StdEdge{
Source: src.ID,
Props: ps.NewMap(),
EType: "datalink",
}
// DataLinks have a 'name' field that is expected to be unique for the source, if present
if spec.Name != "" {
// TODO 'name' is a traditional unique key; a change in it inherently denotes a new edge. how to handle this?
// FIXME this approach just always updates the mid, which is weird?
e.Props = e.Props.Set("name", system.Property{MsgSrc: mid, Value: spec.Name})
re := g.OutWith(src.ID, q.Qbe(system.EType("datalink"), "name", spec.Name))
if len(re) == 1 {
success = true
e = re[0]
}
}
if spec.Type != "" {
e.Props = e.Props.Set("type", system.Property{MsgSrc: mid, Value: spec.Type})
}
if spec.Subset != "" {
e.Props = e.Props.Set("subset", system.Property{MsgSrc: mid, Value: spec.Subset})
}
if spec.Interaction != "" {
e.Props = e.Props.Set("interaction", system.Property{MsgSrc: mid, Value: spec.Interaction})
}
// Special bits: if we have ConnUnix data, eliminate ConnNet data, and vice-versa.
var isLocal bool
if spec.ConnUnix.Path != "" {
isLocal = true
e.Props = e.Props.Set("path", system.Property{MsgSrc: mid, Value: spec.ConnUnix.Path})
e.Props = e.Props.Delete("hostname")
e.Props = e.Props.Delete("ipv4")
e.Props = e.Props.Delete("ipv6")
e.Props = e.Props.Delete("port")
e.Props = e.Props.Delete("proto")
} else {
e.Props = e.Props.Set("port", system.Property{MsgSrc: mid, Value: spec.ConnNet.Port})
e.Props = e.Props.Set("proto", system.Property{MsgSrc: mid, Value: spec.ConnNet.Proto})
// can only be one of hostname, ipv4 or ipv6
if spec.ConnNet.Hostname != "" {
e.Props = e.Props.Set("hostname", system.Property{MsgSrc: mid, Value: spec.ConnNet.Hostname})
} else if spec.ConnNet.Ipv4 != "" {
e.Props = e.Props.Set("ipv4", system.Property{MsgSrc: mid, Value: spec.ConnNet.Ipv4})
} else {
e.Props = e.Props.Set("ipv6", system.Property{MsgSrc: mid, Value: spec.ConnNet.Ipv6})
}
}
if success {
return
}
var sock system.VertexTuple
var rv system.VertexTupleVector // just for reuse
// If net, must scan; if local, a bit easier.
if !isLocal {
// First, find the environment vertex
rv = g.VerticesWith(q.Qbv(system.VType("environment")))
var envid uint64
for _, vt := range rv {
if maputil.AnyMatch(e.Props, vt.Vertex.Properties, "hostname", "ipv4", "ipv6") {
envid = vt.ID
break
}
}
// No matching env found, bail out
if envid == 0 {
return
}
// Now, walk the environment's edges to find the vertex representing the port
rv = g.PredecessorsWith(envid, q.Qbv(system.VType("comm"), "type", "port", "port", spec.ConnNet.Port).And(q.Qbe(system.EType("envlink"))))
if len(rv) != 1 {
return
}
sock = rv[0]
// With sock in hand, now find its proc
rv = g.PredecessorsWith(sock.ID, q.Qbe(system.EType("listening"), "proto", spec.ConnNet.Proto).And(q.Qbv(system.VType("process"))))
if len(rv) != 1 {
// TODO could/will we ever allow >1?
return
}
} else {
envid, _, exists := findEnv(g, src)
if !exists {
// this is would be a pretty weird case
return
}
// Walk the graph to find the vertex representing the unix socket
rv = g.PredecessorsWith(envid, q.Qbv(system.VType("comm"), "path", spec.ConnUnix.Path).And(q.Qbe(system.EType("envlink"))))
if len(rv) != 1 {
return
}
sock = rv[0]
// With sock in hand, now find its proc
rv = g.PredecessorsWith(sock.ID, q.Qbv(system.VType("process")).And(q.Qbe(system.EType("listening"))))
if len(rv) != 1 {
// TODO could/will we ever allow >1?
return
}
}
rv = g.SuccessorsWith(rv[0].ID, q.Qbv(system.VType("parent-dataset")))
// FIXME this absolutely could be more than 1
if len(rv) != 1 {
return
}
dataset := rv[0]
// if the spec indicates a subset, find it
if spec.Subset != "" {
rv = g.PredecessorsWith(rv[0].ID, q.Qbv(system.VType("dataset"), "name", spec.Subset).And(q.Qbe(system.EType("dataset-hierarchy"))))
if len(rv) != 1 {
return
}
dataset = rv[0]
}
// FIXME only recording the final target id is totally broken; see https://github.com/pipeviz/pipeviz/issues/37
// Aaaand we found our target.
success = true
e.Target = dataset.ID
return
}
