Access and Query Amazon Athena via DBI/JDBC
Nie możesz wybrać więcej, niż 25 tematów Tematy muszą się zaczynać od litery lub cyfry, mogą zawierać myślniki ('-') i mogą mieć do 35 znaków.
boB Rudis 439ca3503c
log
1 rok temu
R log 1 rok temu
inst/java log 1 rok temu
man restored contributors 1 rok temu
tests log 1 rok temu
vignettes restored contributors 1 rok temu
.Rbuildignore restored contributors 1 rok temu
.bash_profile beta-update 2 lat temu
.codecov.yml pre-travis check 1 rok temu
.gitignore restored contributors 1 rok temu
.travis.yml pre-travis check 1 rok temu
CONDUCT.md beta-update 2 lat temu
DESCRIPTION pre-travis check 1 rok temu
LICENSE update 1 rok temu
LICENSE.md update 1 rok temu
NAMESPACE passed checks 1 rok temu
NEWS.md log 1 rok temu
README.Rmd pre-travis check 1 rok temu
README.md pre-travis check 1 rok temu
metis.Rproj passed checks 1 rok temu

README.md

Travis-CI Build Status [Coverage Status](https://codecov.io/gh/hrbrmstr/metis CRAN_Status_Badge

metis

Access and Query Amazon Athena via DBI/JDBC

Description

In Greek mythology, Metis was Athena’s “helper” so…

Methods are provided to connect to ‘Amazon’ ‘Athena’, lookup schemas/tables, perform queries and retrieve query results via the included JDBC DBI driver.

What’s Inside The Tin?

The following functions are implemented:

Easy-interface connection helper:

  • athena_connect Simplified Athena JDBC connection helper

Custom JDBC Classes:

  • Athena: AthenaJDBC (make a new Athena con obj)
  • AthenaConnection-class: AthenaJDBC
  • AthenaDriver-class: AthenaJDBC
  • AthenaResult-class: AthenaJDBC

Custom JDBC Class Methods:

  • dbConnect-method
  • dbExistsTable-method
  • dbGetQuery-method
  • dbListFields-method
  • dbListTables-method
  • dbReadTable-method
  • dbSendQuery-method

Pulled in from other cloudyr pkgs:

  • read_credentials: Use Credentials from .aws/credentials File
  • use_credentials: Use Credentials from .aws/credentials File

Installation

devtools::install_git("https://git.sr.ht/~hrbrmstr/metis")
# OR
devtools::install_gitlab("hrbrmstr/metis")
# OR
devtools::install_github("hrbrmstr/metis")

Usage

library(metis)

# current verison
packageVersion("metis")
## [1] '0.3.0'
library(rJava)
library(RJDBC)
library(metis)
library(magrittr) # for piping b/c I'm addicted
dbConnect(
  metis::Athena(),
  Schema = "sampledb",
  AwsCredentialsProviderClass = "com.simba.athena.amazonaws.auth.PropertiesFileCredentialsProvider",
  AwsCredentialsProviderArguments = path.expand("~/.aws/athenaCredentials.props")
) -> con

dbListTables(con, schema="sampledb")
## [1] "elb_logs"
dbExistsTable(con, "elb_logs", schema="sampledb")
## [1] TRUE
dbListFields(con, "elb_logs", "sampledb")
##  [1] "timestamp"             "elbname"               "requestip"             "requestport"          
##  [5] "backendip"             "backendport"           "requestprocessingtime" "backendprocessingtime"
##  [9] "clientresponsetime"    "elbresponsecode"       "backendresponsecode"   "receivedbytes"        
## [13] "sentbytes"             "requestverb"           "url"                   "protocol"
dbGetQuery(con, "SELECT * FROM sampledb.elb_logs LIMIT 10") %>% 
  dplyr::glimpse()
## Observations: 10
## Variables: 16
## $ timestamp             <chr> "2014-09-27T00:00:25.424956Z", "2014-09-27T00:00:56.439218Z", "2014-09-27T00:01:27.4417…
## $ elbname               <chr> "lb-demo", "lb-demo", "lb-demo", "lb-demo", "lb-demo", "lb-demo", "lb-demo", "lb-demo",…
## $ requestip             <chr> "241.230.198.83", "252.26.60.51", "250.244.20.109", "247.59.58.167", "254.64.224.54", "…
## $ requestport           <int> 27026, 27026, 27026, 27026, 27026, 27026, 27026, 27026, 27026, 27026
## $ backendip             <chr> "251.192.40.76", "249.89.116.3", "251.111.156.171", "251.139.91.156", "251.111.156.171"…
## $ backendport           <int> 443, 8888, 8888, 8888, 8000, 8888, 8888, 8888, 8888, 8888
## $ requestprocessingtime <dbl> 9.1e-05, 9.4e-05, 8.4e-05, 9.7e-05, 9.1e-05, 9.3e-05, 9.4e-05, 8.3e-05, 9.0e-05, 9.0e-05
## $ backendprocessingtime <dbl> 0.046598, 0.038973, 0.047054, 0.039845, 0.061461, 0.037791, 0.047035, 0.048792, 0.04572…
## $ clientresponsetime    <dbl> 4.9e-05, 4.7e-05, 4.9e-05, 4.9e-05, 4.0e-05, 7.7e-05, 7.5e-05, 7.3e-05, 4.0e-05, 6.7e-05
## $ elbresponsecode       <chr> "200", "200", "200", "200", "200", "200", "200", "200", "200", "200"
## $ backendresponsecode   <chr> "200", "200", "200", "200", "200", "400", "400", "200", "200", "200"
## $ receivedbytes         <S3: integer64> 0, 0, 0, 0, 0, 0, 0, 0, 0, 0
## $ sentbytes             <S3: integer64> 2, 2, 2, 2, 2, 2, 2, 2, 2, 2
## $ requestverb           <chr> "GET", "GET", "GET", "GET", "GET", "GET", "GET", "GET", "GET", "GET"
## $ url                   <chr> "http://www.abcxyz.com:80/jobbrowser/?format=json&state=running&user=20g578y", "http://…
## $ protocol              <chr> "HTTP/1.1", "HTTP/1.1", "HTTP/1.1", "HTTP/1.1", "HTTP/1.1", "HTTP/1.1", "HTTP/1.1", "HT…

Check types

dbGetQuery(con, "
SELECT
  CAST('chr' AS CHAR(4)) achar,
  CAST('varchr' AS VARCHAR) avarchr,
  CAST(SUBSTR(timestamp, 1, 10) AS DATE) AS tsday,
  CAST(100.1 AS DOUBLE) AS justadbl,
  CAST(127 AS TINYINT) AS asmallint,
  CAST(100 AS INTEGER) AS justanint,
  CAST(100000000000000000 AS BIGINT) AS abigint,
  CAST(('GET' = 'GET') AS BOOLEAN) AS is_get,
  ARRAY[1, 2, 3] AS arr1,
  ARRAY['1', '2, 3', '4'] AS arr2,
  MAP(ARRAY['foo', 'bar'], ARRAY[1, 2]) AS mp,
  CAST(ROW(1, 2.0) AS ROW(x BIGINT, y DOUBLE)) AS rw,
  CAST('{\"a\":1}' AS JSON) js
FROM elb_logs
LIMIT 1
") %>% 
  dplyr::glimpse()
## Observations: 1
## Variables: 13
## $ achar     <chr> "chr "
## $ avarchr   <chr> "varchr"
## $ tsday     <date> 2014-09-29
## $ justadbl  <dbl> 100.1
## $ asmallint <int> 127
## $ justanint <int> 100
## $ abigint   <S3: integer64> 100000000000000000
## $ is_get    <lgl> TRUE
## $ arr1      <chr> "1, 2, 3"
## $ arr2      <chr> "1, 2, 3, 4"
## $ mp        <chr> "{bar=2, foo=1}"
## $ rw        <chr> "{x=1, y=2.0}"
## $ js        <chr> "\"{\\\"a\\\":1}\""
cloc::cloc_pkg_md()
Lang # Files (%) LoC (%) Blank lines (%) # Lines (%)
R 8 0.89 250 0.83 83 0.72 194 0.79
Rmd 1 0.11 50 0.17 32 0.28 53 0.21

Code of Conduct

Please note that this project is released with a Contributor Code of Conduct. By participating in this project you agree to abide by its terms.