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docker-lambda/nodejs8.10/run/awslambda-mock.js at add-lambda-api · sysdevguru/docker-lambda · GitHub
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nodejs8.10
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awslambda-mock.js
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docker-lambda
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nodejs8.10
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run
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awslambda-mock.js
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var
fs
=
require
(
'fs'
)
var
crypto
=
require
(
'crypto'
)
var
http
=
require
(
'http'
)
var
child_process
=
require
(
'child_process'
)
var
PING_RETRIES
=
20
var
LOGS
=
''
var
LOG_TAIL
=
false
var
HAS_BUFFER_FROM
=
Buffer
.
from
&&
Buffer
.
from
!==
Uint8Array
.
from
var
STAY_OPEN
=
process
.
env
.
DOCKER_LAMBDA_STAY_OPEN
var
HANDLER
=
process
.
argv
[
2
]
||
process
.
env
.
AWS_LAMBDA_FUNCTION_HANDLER
||
process
.
env
.
_HANDLER
||
'index.handler'
var
EVENT_BODY
=
process
.
argv
[
3
]
||
process
.
env
.
AWS_LAMBDA_EVENT_BODY
||
(
process
.
env
.
DOCKER_LAMBDA_USE_STDIN
&&
fs
.
readFileSync
(
'/dev/stdin'
,
'utf8'
)
)
||
'{}'
var
FN_NAME
=
process
.
env
.
AWS_LAMBDA_FUNCTION_NAME
||
'test'
var
VERSION
=
process
.
env
.
AWS_LAMBDA_FUNCTION_VERSION
||
'$LATEST'
var
MEM_SIZE
=
process
.
env
.
AWS_LAMBDA_FUNCTION_MEMORY_SIZE
||
'1536'
var
TIMEOUT
=
process
.
env
.
AWS_LAMBDA_FUNCTION_TIMEOUT
||
'300'
var
REGION
=
process
.
env
.
AWS_REGION
||
process
.
env
.
AWS_DEFAULT_REGION
||
'us-east-1'
var
ACCOUNT_ID
=
process
.
env
.
AWS_ACCOUNT_ID
||
randomAccountId
(
)
var
ACCESS_KEY_ID
=
process
.
env
.
AWS_ACCESS_KEY_ID
||
'SOME_ACCESS_KEY_ID'
var
SECRET_ACCESS_KEY
=
process
.
env
.
AWS_SECRET_ACCESS_KEY
||
'SOME_SECRET_ACCESS_KEY'
var
SESSION_TOKEN
=
process
.
env
.
AWS_SESSION_TOKEN
var
INVOKED_ARN
=
process
.
env
.
AWS_LAMBDA_FUNCTION_INVOKED_ARN
||
arn
(
REGION
,
ACCOUNT_ID
,
FN_NAME
)
var
TRACE_ID
=
process
.
env
.
_X_AMZN_TRACE_ID
||
'root=1-5d9639c7-ac2df104a29f3070f507bdb4;sampled=0'
var
CLIENT_CONTEXT
=
process
.
env
.
AWS_LAMBDA_CLIENT_CONTEXT
var
COGNITO_IDENTITY
=
process
.
env
.
AWS_LAMBDA_COGNITO_IDENTITY
var
COGNITO_IDENTITY_ID
=
(
tryParse
(
COGNITO_IDENTITY
)
||
{
}
)
.
identity_id
var
COGNITO_IDENTITY_POOL_ID
=
(
tryParse
(
COGNITO_IDENTITY
)
||
{
}
)
.
identity_pool_id
var
DEADLINE_MS
=
Date
.
now
(
)
+
(
TIMEOUT
*
1000
)
process
.
on
(
'SIGINT'
,
(
)
=>
process
.
exit
(
0
)
)
// Don't think this can be done in the Docker image
process
.
umask
(
2
)
process
.
env
.
AWS_LAMBDA_FUNCTION_NAME
=
FN_NAME
process
.
env
.
AWS_LAMBDA_FUNCTION_VERSION
=
VERSION
process
.
env
.
AWS_LAMBDA_FUNCTION_MEMORY_SIZE
=
MEM_SIZE
process
.
env
.
AWS_LAMBDA_LOG_GROUP_NAME
=
'/aws/lambda/'
+
FN_NAME
process
.
env
.
AWS_LAMBDA_LOG_STREAM_NAME
=
new
Date
(
)
.
toISOString
(
)
.
slice
(
0
,
10
)
.
replace
(
/
-
/
g
,
'/'
)
+
'/['
+
VERSION
+
']'
+
crypto
.
randomBytes
(
16
)
.
toString
(
'hex'
)
process
.
env
.
AWS_REGION
=
REGION
process
.
env
.
AWS_DEFAULT_REGION
=
REGION
process
.
env
.
_HANDLER
=
HANDLER
var
mockServerProcess
=
child_process
.
spawn
(
'/var/runtime/mockserver'
,
{
stdio
:
[
'pipe'
,
'inherit'
,
'inherit'
]
,
env
:
Object
.
assign
(
{
DOCKER_LAMBDA_NO_BOOTSTRAP
:
1
,
DOCKER_LAMBDA_USE_STDIN
:
1
,
}
,
process
.
env
)
}
)
mockServerProcess
.
on
(
'error'
,
console
.
error
)
mockServerProcess
.
stdin
.
end
(
EVENT_BODY
)
mockServerProcess
.
unref
(
)
var
OPTIONS
=
{
invokeId
:
uuid
(
)
,
handler
:
HANDLER
,
suppressInit
:
true
,
credentials
:
{
key
:
ACCESS_KEY_ID
,
secret
:
SECRET_ACCESS_KEY
,
session
:
SESSION_TOKEN
,
}
,
eventBody
:
EVENT_BODY
,
contextObjects
:
{
clientContext
:
CLIENT_CONTEXT
,
cognitoIdentityId
:
COGNITO_IDENTITY_ID
,
cognitoPoolId
:
COGNITO_IDENTITY_POOL_ID
,
}
,
invokedFunctionArn
:
INVOKED_ARN
,
'x-amzn-trace-id'
:
TRACE_ID
}
// Some weird spelling error in the source?
OPTIONS
.
invokeid
=
OPTIONS
.
invokeId
var
invoked
=
false
var
errored
=
false
var
pingPromise
=
new
Promise
(
resolve
=>
ping
(
PING_RETRIES
,
resolve
)
)
var
reportDonePromise
=
new
Promise
(
resolve
=>
resolve
(
)
)
module
.
exports
=
{
initRuntime
:
function
(
)
{
return
OPTIONS
}
,
waitForInvoke
:
function
(
cb
)
{
Promise
.
all
(
[
pingPromise
,
reportDonePromise
]
)
.
then
(
(
)
=>
{
http
.
get
(
{
hostname
:
'127.0.0.1'
,
port
:
9001
,
path
:
'/2018-06-01/runtime/invocation/next'
,
}
,
res
=>
{
if
(
res
.
statusCode
!==
200
)
{
console
.
error
(
`Mock server invocation/next returned a
${
res
.
statusCode
}
response`
)
return
process
.
exit
(
1
)
}
if
(
invoked
)
{
LOGS
=
''
}
invoked
=
true
OPTIONS
.
invokeId
=
OPTIONS
.
initInvokeId
=
OPTIONS
.
invokeid
=
res
.
headers
[
'lambda-runtime-aws-request-id'
]
OPTIONS
.
invokedFunctionArn
=
res
.
headers
[
'lambda-runtime-invoked-function-arn'
]
OPTIONS
[
'x-amzn-trace-id'
]
=
res
.
headers
[
'lambda-runtime-trace-id'
]
DEADLINE_MS
=
+
res
.
headers
[
'lambda-runtime-deadline-ms'
]
OPTIONS
.
contextObjects
.
clientContext
=
res
.
headers
[
'lambda-runtime-client-context'
]
var
cognitoIdentity
=
tryParse
(
res
.
headers
[
'lambda-runtime-cognito-identity'
]
)
||
{
}
OPTIONS
.
contextObjects
.
cognitoIdentityId
=
cognitoIdentity
.
identity_id
OPTIONS
.
contextObjects
.
cognitoPoolId
=
cognitoIdentity
.
identity_pool_id
LOG_TAIL
=
res
.
headers
[
'docker-lambda-log-type'
]
===
'Tail'
OPTIONS
.
eventBody
=
''
res
.
setEncoding
(
'utf8'
)
.
on
(
'data'
,
data
=>
OPTIONS
.
eventBody
+=
data
)
.
on
(
'end'
,
(
)
=>
cb
(
OPTIONS
)
)
.
on
(
'error'
,
function
(
err
)
{
console
.
error
(
err
)
process
.
exit
(
1
)
}
)
}
)
.
on
(
'error'
,
err
=>
{
if
(
err
.
code
===
'ECONNRESET'
)
{
return
process
.
exit
(
errored
?
1
:
0
)
}
console
.
error
(
err
)
process
.
exit
(
1
)
}
)
}
)
}
,
reportRunning
:
function
(
invokeId
)
{
}
,
// eslint-disable-line no-unused-vars
reportDone
:
function
(
invokeId
,
errType
,
resultStr
)
{
if
(
!
invoked
)
return
if
(
errType
)
errored
=
true
reportDonePromise
=
new
Promise
(
resolve
=>
{
http
.
request
(
{
method
:
'POST'
,
hostname
:
'127.0.0.1'
,
port
:
9001
,
path
:
'/2018-06-01/runtime/invocation/'
+
invokeId
+
(
errType
==
null
?
'/response'
:
'/error'
)
,
headers
:
LOG_TAIL
?
{
'Docker-Lambda-Log-Result'
:
newBuffer
(
LOGS
)
.
slice
(
-
4096
)
.
toString
(
'base64'
)
}
:
{
}
,
}
,
res
=>
{
if
(
res
.
statusCode
!==
202
)
{
console
.
error
(
err
||
'Got status code: '
+
res
.
statusCode
)
process
.
exit
(
1
)
}
resolve
(
)
}
)
.
on
(
'error'
,
err
=>
{
console
.
error
(
err
)
process
.
exit
(
1
)
}
)
.
end
(
resultStr
)
}
)
}
,
reportFault
:
function
(
invokeId
,
msg
,
errName
,
errStack
)
{
errored
=
true
systemErr
(
msg
+
(
errName
?
': '
+
errName
:
''
)
)
if
(
errStack
)
systemErr
(
errStack
)
}
,
reportUserInitStart
:
function
(
)
{
}
,
reportUserInitEnd
:
function
(
)
{
}
,
reportUserInvokeStart
:
function
(
)
{
}
,
reportUserInvokeEnd
:
function
(
)
{
}
,
reportException
:
function
(
)
{
}
,
getRemainingTime
:
function
(
)
{
return
DEADLINE_MS
-
Date
.
now
(
)
}
,
sendConsoleLogs
:
consoleLog
,
maxLoggerErrorSize
:
256
*
1024
,
}
function
ping
(
retries
,
cb
)
{
http
.
get
(
{
hostname
:
'127.0.0.1'
,
port
:
9001
,
path
:
'/2018-06-01/runtime/ping'
}
,
cb
)
.
on
(
'error'
,
(
)
=>
{
if
(
!
retries
)
{
console
.
error
(
'Mock server did not respond to pings in time'
)
process
.
exit
(
1
)
}
setTimeout
(
ping
,
5
,
retries
-
1
,
cb
)
}
)
}
function
tryParse
(
cognitoIdentity
)
{
try
{
return
JSON
.
parse
(
cognitoIdentity
)
}
catch
(
e
)
{
return
null
}
}
function
consoleLog
(
str
)
{
if
(
STAY_OPEN
)
{
if
(
LOG_TAIL
)
{
LOGS
+=
str
}
process
.
stdout
.
write
(
str
)
}
else
{
process
.
stderr
.
write
(
formatConsole
(
str
)
)
}
}
function
systemErr
(
str
)
{
process
.
stderr
.
write
(
formatErr
(
str
)
+
'\n'
)
}
function
formatConsole
(
str
)
{
return
str
.
replace
(
/
^
[
0
-
9
T
Z
:
.
-
]
+
\t
[
0
-
9
a
-
f
-
]
+
\t
/
,
'\u001b[34m$&\u001b[0m'
)
}
function
formatErr
(
str
)
{
return
'\u001b[31m'
+
str
+
'\u001b[0m'
}
// Approximates the look of a v1 UUID
function
uuid
(
)
{
return
crypto
.
randomBytes
(
4
)
.
toString
(
'hex'
)
+
'-'
+
crypto
.
randomBytes
(
2
)
.
toString
(
'hex'
)
+
'-'
+
crypto
.
randomBytes
(
2
)
.
toString
(
'hex'
)
.
replace
(
/
^
.
/
,
'1'
)
+
'-'
+
crypto
.
randomBytes
(
2
)
.
toString
(
'hex'
)
+
'-'
+
crypto
.
randomBytes
(
6
)
.
toString
(
'hex'
)
}
function
randomAccountId
(
)
{
return
String
(
0x100000000
*
Math
.
random
(
)
)
}
function
arn
(
region
,
accountId
,
fnName
)
{
return
'arn:aws:lambda:'
+
region
+
':'
+
accountId
.
replace
(
/
[
^
\d
]
/
g
,
''
)
+
':function:'
+
fnName
}
function
newBuffer
(
str
)
{
return
HAS_BUFFER_FROM
?
Buffer
.
from
(
str
)
:
new
Buffer
(
str
)
}
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