cartodb4/node-pg-copy-streams
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Merge pull request #53 from jeromew/upstream-frontier

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Bugfix - wrong tests on chunk frontiers
This commit is contained in:
jeromew 2016-08-22 17:47:01 +02:00 committed by GitHub
commit f29aef3bba
2 changed files with 16 additions and 3 deletions
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6
copy-to.js
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@ -42,10 +42,10 @@ CopyStreamQuery.prototype._transform = function(chunk, enc, cb) {
var messageCode;
var needPush = false;
while((chunk.length - offset) > (Byte1Len + Int32Len)) {
while((chunk.length - offset) >= (Byte1Len + Int32Len)) {
var messageCode = chunk[offset]
//console.log(c, w, offset, 'PostgreSQL message ' + String.fromCharCode(messageCode))
//console.log('PostgreSQL message ' + String.fromCharCode(messageCode))
switch(messageCode) {
// detect COPY start
@ -79,7 +79,7 @@ CopyStreamQuery.prototype._transform = function(chunk, enc, cb) {
}
length = chunk.readUInt32BE(offset+Byte1Len)
if(chunk.length > (offset + Byte1Len + length)) {
if(chunk.length >= (offset + Byte1Len + length)) {
offset += Byte1Len + Int32Len
if (needPush) {
var row = chunk.slice(offset, offset + length - Int32Len)

13
test/copy-to.js
View File

@ -7,6 +7,7 @@ var concat = require('concat-stream')
var pg = require('pg')
var copy = require('../').to
var code = require('../message-formats')
var client = function() {
var client = new pg.Client()
@ -22,6 +23,18 @@ var testConstruction = function() {
testConstruction()
var testComparators = function() {
var copy1 = copy();
copy1.pipe(concat(function(buf) {
assert(copy1._gotCopyOutResponse, 'should have received CopyOutResponse')
assert(!copy1._remainder, 'Message with no additional data (len=Int4Len+0) should not leave a remainder')
}))
copy1.end(new Buffer([code.CopyOutResponse, 0x00, 0x00, 0x00, 0x04]));
}
testComparators();
var testRange = function(top) {
var fromClient = client()
var txt = 'COPY (SELECT * from generate_series(0, ' + (top - 1) + ')) TO STDOUT'