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Copy patheffects_apply.c
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587 lines (469 loc) · 16.3 KB
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/*
* Copyright (c) 2006-Present, Redis Ltd.
* All rights reserved.
*
* Licensed under your choice of the Redis Source Available License 2.0
* (RSALv2); or (b) the Server Side Public License v1 (SSPLv1); or (c) the
* GNU Affero General Public License v3 (AGPLv3).
*/
#include "RG.h"
#include "effects.h"
#include "../graph/graph_hub.h"
#include <stdio.h>
// read effect type from stream
static inline EffectType ReadEffectType
(
FILE *stream // effects stream
) {
EffectType t = EFFECT_UNKNOWN; // default to unknown effect type
// read EffectType off of stream
fread_assert(&t, sizeof(EffectType), stream);
return t;
}
static AttributeSet ReadAttributeSet
(
FILE *stream
) {
//--------------------------------------------------------------------------
// effect format:
// attribute count
// attributes (id,value) pair
//--------------------------------------------------------------------------
//--------------------------------------------------------------------------
// read attribute count
//--------------------------------------------------------------------------
ushort attr_count;
fread_assert(&attr_count, sizeof(attr_count), stream);
//--------------------------------------------------------------------------
// read attributes
//--------------------------------------------------------------------------
SIValue values[attr_count];
Attribute_ID ids[attr_count];
for(ushort i = 0; i < attr_count; i++) {
// read attribute ID
fread_assert(ids + i, sizeof(Attribute_ID), stream);
// read attribute value
values[i] = SIValue_FromBinary(stream);
}
AttributeSet attr_set = NULL;
AttributeSet_AddNoClone(&attr_set, ids, values, attr_count, false);
return attr_set;
}
static void ApplyCreateNode
(
FILE *stream, // effects stream
GraphContext *gc // graph to operate on
) {
//--------------------------------------------------------------------------
// effect format:
// label count
// labels
// attribute count
// attributes (id,value) pair
//--------------------------------------------------------------------------
//--------------------------------------------------------------------------
// read label count
//--------------------------------------------------------------------------
ushort lbl_count;
fread_assert(&lbl_count, sizeof(lbl_count), stream);
//--------------------------------------------------------------------------
// read labels
//--------------------------------------------------------------------------
LabelID labels[lbl_count];
for(ushort i = 0; i < lbl_count; i++) {
fread_assert(labels + i, sizeof(LabelID), stream);
}
//--------------------------------------------------------------------------
// read attributes
//--------------------------------------------------------------------------
AttributeSet attr_set = ReadAttributeSet(stream);
//--------------------------------------------------------------------------
// create node
//--------------------------------------------------------------------------
Node n = GE_NEW_NODE();
CreateNode(gc, &n, labels, lbl_count, attr_set, false);
}
static void ApplyCreateEdge
(
FILE *stream, // effects stream
GraphContext *gc // graph to operate on
) {
//--------------------------------------------------------------------------
// effect format:
// effect type
// relationship count
// relationships
// src node ID
// dest node ID
// attribute count
// attributes (id,value) pair
//--------------------------------------------------------------------------
//--------------------------------------------------------------------------
// read relationship type count
//--------------------------------------------------------------------------
ushort rel_count;
fread_assert(&rel_count, sizeof(rel_count), stream);
ASSERT(rel_count == 1);
//--------------------------------------------------------------------------
// read relationship type
//--------------------------------------------------------------------------
RelationID r;
fread_assert(&r, sizeof(r), stream);
//--------------------------------------------------------------------------
// read src node ID
//--------------------------------------------------------------------------
NodeID src_id;
fread_assert(&src_id, sizeof(NodeID), stream);
//--------------------------------------------------------------------------
// read dest node ID
//--------------------------------------------------------------------------
NodeID dest_id;
fread_assert(&dest_id, sizeof(NodeID), stream);
//--------------------------------------------------------------------------
// read attributes
//--------------------------------------------------------------------------
AttributeSet attr_set = ReadAttributeSet(stream);
//--------------------------------------------------------------------------
// create edge
//--------------------------------------------------------------------------
Edge e;
CreateEdge(gc, &e, src_id, dest_id, r, attr_set, false);
}
static void ApplyLabels
(
FILE *stream, // effects stream
GraphContext *gc, // graph to operate on
bool add // add or remove labels
) {
//--------------------------------------------------------------------------
// effect format:
// effect type
// node ID
// labels count
// label IDs
//--------------------------------------------------------------------------
//--------------------------------------------------------------------------
// read node ID
//--------------------------------------------------------------------------
EntityID id;
fread_assert(&id, sizeof(id), stream);
//--------------------------------------------------------------------------
// get updated node
//--------------------------------------------------------------------------
Node n;
Graph *g = gc->g;
bool found = Graph_GetNode(g, id, &n);
ASSERT(found == true);
//--------------------------------------------------------------------------
// read labels count
//--------------------------------------------------------------------------
uint8_t lbl_count;
fread_assert(&lbl_count, sizeof(lbl_count), stream);
ASSERT(lbl_count > 0);
// TODO: move to LabelID
uint n_add_labels = 0;
uint n_remove_labels = 0;
const char **add_labels = NULL;
const char **remove_labels = NULL;
const char *lbl[lbl_count];
// assign lbl to the appropriate array
if(add) {
add_labels = lbl;
n_add_labels = lbl_count;
} else {
remove_labels = lbl;
n_remove_labels = lbl_count;
}
//--------------------------------------------------------------------------
// read labels
//--------------------------------------------------------------------------
for(ushort i = 0; i < lbl_count; i++) {
LabelID l;
fread_assert(&l, sizeof(LabelID), stream);
Schema *s = GraphContext_GetSchemaByID(gc, l, SCHEMA_NODE);
ASSERT(s != NULL);
lbl[i] = Schema_GetName(s);
}
//--------------------------------------------------------------------------
// update node labels
//--------------------------------------------------------------------------
UpdateNodeLabels(gc, &n, add_labels, remove_labels, n_add_labels,
n_remove_labels, false);
}
static void ApplyAddSchema
(
FILE *stream, // effects stream
GraphContext *gc // graph to operate on
) {
//--------------------------------------------------------------------------
// effect format:
// effect type
// schema type
// schema name
//--------------------------------------------------------------------------
// read schema type
SchemaType t;
fread_assert(&t, sizeof(t), stream);
// read schema name
// read string length
size_t l;
fread_assert(&l, sizeof(l), stream);
// read string
char schema_name[l];
fread_assert(schema_name, l, stream);
// create schema
AddSchema(gc, schema_name, t, false);
}
static void ApplyAddAttribute
(
FILE *stream, // effects stream
GraphContext *gc // graph to operate on
) {
//--------------------------------------------------------------------------
// effect format:
// effect type
// attribute name
//--------------------------------------------------------------------------
// read attribute name length
size_t l;
fread_assert(&l, sizeof(l), stream);
// read attribute name
const char attr[l];
fread_assert(attr, l, stream);
// attr should not exist
ASSERT(GraphContext_GetAttributeID(gc, attr) == ATTRIBUTE_ID_NONE);
// add attribute
FindOrAddAttribute(gc, attr, false);
}
// process Update_Edge effect
static void ApplyUpdateEdge
(
FILE *stream, // effects stream
GraphContext *gc // graph to operate on
) {
//--------------------------------------------------------------------------
// effect format:
// edge ID
// attribute ID
// attribute value
//--------------------------------------------------------------------------
SIValue v; // updated value
uint props_set; // number of attributes updated
uint props_removed; // number of attributes removed
Attribute_ID attr_id; // entity ID
NodeID s_id = INVALID_ENTITY_ID; // edge src node ID
NodeID t_id = INVALID_ENTITY_ID; // edge dest node ID
RelationID r_id = GRAPH_UNKNOWN_RELATION; // edge rel-type
EntityID id = INVALID_ENTITY_ID;
//--------------------------------------------------------------------------
// read edge ID
//--------------------------------------------------------------------------
fread_assert(&id, sizeof(EntityID), stream);
ASSERT(id != INVALID_ENTITY_ID);
//--------------------------------------------------------------------------
// read relation ID
//--------------------------------------------------------------------------
fread_assert(&r_id, sizeof(RelationID), stream);
ASSERT(r_id >= 0);
//--------------------------------------------------------------------------
// read src ID
//--------------------------------------------------------------------------
fread_assert(&s_id, sizeof(NodeID), stream);
ASSERT(s_id != INVALID_ENTITY_ID);
//--------------------------------------------------------------------------
// read dest ID
//--------------------------------------------------------------------------
fread_assert(&t_id, sizeof(NodeID), stream);
ASSERT(t_id != INVALID_ENTITY_ID);
//--------------------------------------------------------------------------
// read attribute ID
//--------------------------------------------------------------------------
fread_assert(&attr_id, sizeof(Attribute_ID), stream);
//--------------------------------------------------------------------------
// read attribute value
//--------------------------------------------------------------------------
v = SIValue_FromBinary(stream);
ASSERT(SI_TYPE(v) & (SI_VALID_PROPERTY_VALUE | T_NULL));
ASSERT((attr_id != ATTRIBUTE_ID_ALL || SIValue_IsNull(v)) && attr_id != ATTRIBUTE_ID_NONE);
UpdateEdgeProperty(gc, id, r_id, s_id, t_id, attr_id, v);
}
// process UpdateNode effect
static void ApplyUpdateNode
(
FILE *stream, // effects stream
GraphContext *gc // graph to operate on
) {
//--------------------------------------------------------------------------
// effect format:
// entity ID
// attribute ID
// attribute value
//--------------------------------------------------------------------------
SIValue v; // updated value
uint props_set; // number of attributes updated
uint props_removed; // number of attributes removed
Attribute_ID attr_id; // entity ID
EntityID id = INVALID_ENTITY_ID;
//--------------------------------------------------------------------------
// read node ID
//--------------------------------------------------------------------------
fread_assert(&id, sizeof(EntityID), stream);
//--------------------------------------------------------------------------
// read attribute ID
//--------------------------------------------------------------------------
fread_assert(&attr_id, sizeof(Attribute_ID), stream);
//--------------------------------------------------------------------------
// read attribute ID
//--------------------------------------------------------------------------
v = SIValue_FromBinary(stream);
ASSERT(SI_TYPE(v) & (SI_VALID_PROPERTY_VALUE | T_NULL));
ASSERT((attr_id != ATTRIBUTE_ID_ALL || SIValue_IsNull(v)) && attr_id != ATTRIBUTE_ID_NONE);
UpdateNodeProperty(gc, id, attr_id, v);
}
// process DeleteNode effect
static void ApplyDeleteNode
(
FILE *stream, // effects stream
GraphContext *gc // graph to operate on
) {
//--------------------------------------------------------------------------
// effect format:
// node ID
//--------------------------------------------------------------------------
Node n; // node to delete
EntityID id; // node ID
Graph *g = gc->g; // graph to delete node from
// read node ID off of stream
fread_assert(&id, sizeof(EntityID), stream);
// retrieve node from graph
int res = Graph_GetNode(g, id, &n);
ASSERT(res != 0);
// delete node
DeleteNodes(gc, &n, 1, false);
}
// process DeleteNode effect
static void ApplyDeleteEdge
(
FILE *stream, // effects stream
GraphContext *gc // graph to operate on
) {
//--------------------------------------------------------------------------
// effect format:
// edge ID
// relation ID
// src ID
// dest ID
//--------------------------------------------------------------------------
Edge e; // edge to delete
EntityID id = INVALID_ENTITY_ID; // edge ID
int r_id = GRAPH_UNKNOWN_RELATION; // edge rel-type
NodeID s_id = INVALID_ENTITY_ID; // edge src node ID
NodeID t_id = INVALID_ENTITY_ID; // edge dest node ID
int res;
UNUSED(res);
Graph *g = gc->g; // graph to delete edge from
// read edge ID
fread_assert(&id, sizeof(EntityID), stream);
// read relation ID
fread_assert(&r_id, sizeof(RelationID), stream);
// read src node ID
fread_assert(&s_id, sizeof(EntityID), stream);
// read dest node ID
fread_assert(&t_id, sizeof(EntityID), stream);
// get edge from the graph
res = Graph_GetEdge(g, id, (Edge*)&e);
ASSERT(res != 0);
// set edge relation, src and destination node
Edge_SetSrcNodeID(&e, s_id);
Edge_SetDestNodeID(&e, t_id);
Edge_SetRelationID(&e, r_id);
// delete edge
DeleteEdges(gc, &e, 1, false);
}
// returns false in case of effect encode/decode version mismatch
static bool ValidateVersion
(
FILE *stream // effects stream
) {
ASSERT(stream != NULL);
// read version
uint8_t v;
fread_assert(&v, sizeof(uint8_t), stream);
if(v != EFFECTS_VERSION) {
// unexpected effects version
RedisModule_Log(NULL, "warning",
"GRAPH.EFFECT version mismatch expected: %d got: %d",
EFFECTS_VERSION, v);
return false;
}
return true;
}
// applys effects encoded in buffer
void Effects_Apply
(
GraphContext *gc, // graph to operate on
const char *effects_buff, // encoded effects
size_t l // size of buffer
) {
// validations
ASSERT(l > 0); // buffer can't be empty
ASSERT(effects_buff != NULL); // buffer can't be NULL
// read buffer in a stream fashion
FILE *stream = fmemopen((void*)effects_buff, l, "r");
// validate effects version
if(ValidateVersion(stream) == false) {
// replica/primary out of sync
exit(1);
}
// lock graph for writing
Graph *g = GraphContext_GetGraph(gc);
Graph_AcquireWriteLock(g);
// update graph sync policy
MATRIX_POLICY policy = Graph_SetMatrixPolicy(g, SYNC_POLICY_RESIZE);
// as long as there's data in stream
while(ftell(stream) < l) {
// read effect type
EffectType t = ReadEffectType(stream);
switch(t) {
case EFFECT_DELETE_NODE:
ApplyDeleteNode(stream, gc);
break;
case EFFECT_DELETE_EDGE:
ApplyDeleteEdge(stream, gc);
break;
case EFFECT_UPDATE_NODE:
ApplyUpdateNode(stream, gc);
break;
case EFFECT_UPDATE_EDGE:
ApplyUpdateEdge(stream, gc);
break;
case EFFECT_CREATE_NODE:
ApplyCreateNode(stream, gc);
break;
case EFFECT_CREATE_EDGE:
ApplyCreateEdge(stream, gc);
break;
case EFFECT_SET_LABELS:
ApplyLabels(stream, gc, true);
break;
case EFFECT_REMOVE_LABELS:
ApplyLabels(stream, gc, false);
break;
case EFFECT_ADD_SCHEMA:
ApplyAddSchema(stream, gc);
break;
case EFFECT_ADD_ATTRIBUTE:
ApplyAddAttribute(stream, gc);
break;
default:
assert(false && "unknown effect type");
break;
}
}
// restore graph sync policy
Graph_SetMatrixPolicy(g, policy);
// release write lock
Graph_ReleaseLock(g);
// close stream
fclose(stream);
}
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