changed the paremeter service_name to service for faraday.

[mvlbarcelos]

faraday_middleware-aws-sigv4 changed to use service instead of service_name https://github.com/winebarrel/faraday_middleware-aws-sigv4#upgrading-from-faraday_middleware-aws-signers-v4

require 'aws-sdk'
require 'elasticsearch'
require 'faraday_middleware/aws_sigv4'


region = 'eu-central-1'
service = 'es'

credentials = Aws::AssumeRoleWebIdentityCredentials.new({
    role_arn: 'arn:aws:iam::ACCOUNT:role/ROLE',
    web_identity_token_file: '/var/run/secrets/eks.amazonaws.com/serviceaccount/token',
    region: 'eu-central-1'
}).credentials

full_url_and_port = 'HOST'
index = 'logs-marcus-test'
type = '_doc'
id = '1'
document = {
  year: 2007,
  title: '5 Centimeters per Second',
  info: {
    plot: 'Told in three interconnected segments, we follow a young man named Takaki through his life.',
    rating: 7.7
  }
}


client = Elasticsearch::Client.new(url: full_url_and_port) do |f|
  f.request :aws_sigv4,
    service_name: service,
    region: region,
    credentials: credentials
end

puts client.index index: index, type: type, id: id, body: document

Traceback (most recent call last):
       16: from /usr/local/bundle/gems/elasticsearch-transport-7.13.3/lib/elasticsearch/transport/transport/base.rb:288:in `perform_request'
       15: from /usr/local/bundle/gems/elasticsearch-transport-7.13.3/lib/elasticsearch/transport/transport/http/faraday.rb:48:in `block in perform_request'
       14: from /usr/local/bundle/gems/faraday-1.10.0/lib/faraday/connection.rb:516:in `run_request'
       13: from /usr/local/bundle/gems/faraday-1.10.0/lib/faraday/rack_builder.rb:154:in `build_response'
       12: from /usr/local/bundle/gems/faraday-1.10.0/lib/faraday/rack_builder.rb:167:in `app'
       11: from /usr/local/bundle/gems/faraday-1.10.0/lib/faraday/rack_builder.rb:174:in `to_app'
       10: from /usr/local/bundle/gems/faraday-1.10.0/lib/faraday/rack_builder.rb:174:in `inject'
        9: from /usr/local/bundle/gems/faraday-1.10.0/lib/faraday/rack_builder.rb:174:in `each'
        8: from /usr/local/bundle/gems/faraday-1.10.0/lib/faraday/rack_builder.rb:175:in `block in to_app'
        7: from /usr/local/bundle/gems/faraday-1.10.0/lib/faraday/rack_builder.rb:57:in `build'
        6: from /usr/local/bundle/gems/faraday-1.10.0/lib/faraday/dependency_loader.rb:21:in `new'
        5: from /usr/local/bundle/gems/faraday-1.10.0/lib/faraday/dependency_loader.rb:21:in `new'
        4: from /usr/local/bundle/gems/faraday_middleware-aws-sigv4-0.3.0/lib/faraday_middleware/request/aws_sigv4.rb:9:in `initialize'
        3: from /usr/local/bundle/gems/faraday_middleware-aws-sigv4-0.3.0/lib/faraday_middleware/request/aws_sigv4.rb:9:in `new'
        2: from /usr/local/bundle/gems/aws-sigv4-1.4.0/lib/aws-sigv4/signer.rb:122:in `initialize'
        1: from /usr/local/bundle/gems/aws-sigv4-1.4.0/lib/aws-sigv4/signer.rb:609:in `extract_service'
ArgumentError (missing required option :service)

fluent@marcus-fluentd:/$ gem list

*** LOCAL GEMS ***

async (1.30.0)
async-http (0.54.0)
async-io (1.32.2)
async-pool (0.3.8)
aws-eventstream (1.2.0)
aws-partitions (1.566.0)
aws-sdk-core (3.130.0)
aws-sigv4 (1.4.0)
bigdecimal (default: 1.4.1)
bundler (default: 1.17.2)
cmath (default: 1.0.0)
concurrent-ruby (1.1.9)
console (1.13.1)
cool.io (1.7.1)
csv (default: 3.0.9)
date (default: 2.0.0)
dbm (default: 1.0.0)
did_you_mean (1.3.0)
e2mmap (default: 0.1.0)
elasticsearch (7.13.3)
elasticsearch-api (7.13.3)
elasticsearch-transport (7.13.3)
etc (default: 1.0.1)
excon (0.92.0)
ext_monitor (0.1.2)
faraday (1.10.0)
faraday-em_http (1.0.0)
faraday-em_synchrony (1.0.0)
faraday-excon (1.1.0)
faraday-httpclient (1.0.1)
faraday-multipart (1.0.3)
faraday-net_http (1.0.1)
faraday-net_http_persistent (1.2.0)
faraday-patron (1.0.0)
faraday-rack (1.0.0)
faraday-retry (1.0.3)
faraday_middleware-aws-sigv4 (0.3.0)
fcntl (default: 1.0.0)
fiber-local (1.0.0)
fiddle (default: 1.0.0)
fileutils (default: 1.1.0)
fluent-plugin-aws-elasticsearch-service (2.4.1)
fluent-plugin-dedot_filter (1.0.0)
fluent-plugin-elasticsearch (5.2.0)
fluent-plugin-prometheus (2.0.2)
fluent-plugin-redaction (0.1.2)
fluentd (1.13.3)
forwardable (default: 1.2.0)
gdbm (default: 2.0.0)
http_parser.rb (0.7.0)
io-console (default: 0.4.7)
ipaddr (default: 1.2.2)
irb (default: 1.0.0)
jmespath (1.6.1)
json (2.4.1, default: 2.1.0)
logger (default: 1.3.0)
matrix (default: 0.1.0)
minitest (5.11.3)
msgpack (1.4.2)
multi_json (1.15.0)
multipart-post (2.1.1)
mutex_m (default: 0.1.0)
net-telnet (0.2.0)
nio4r (2.5.7)
oj (3.10.18)
openssl (default: 2.1.2)
ostruct (default: 0.1.0)
power_assert (1.1.3)
prime (default: 0.1.0)
prometheus-client (3.0.0)
protocol-hpack (1.4.2)
protocol-http (0.21.0)
protocol-http1 (0.13.2)
protocol-http2 (0.14.2)
psych (default: 3.1.0)
rake (12.3.3)
rdoc (default: 6.1.2.1)
rexml (default: 3.1.9.1)
rss (default: 0.2.7)
ruby2_keywords (0.0.5)
scanf (default: 1.0.0)
sdbm (default: 1.0.0)
serverengine (2.2.4)
shell (default: 0.7)
sigdump (0.2.4)
stringio (default: 0.0.2)
strptime (0.2.5)
strscan (default: 1.0.0)
sync (default: 0.5.0)
test-unit (3.2.9)
thwait (default: 0.1.0)
timers (4.3.3)
tracer (default: 0.1.0)
tzinfo (2.0.4)
tzinfo-data (1.2021.1)
webrick (default: 1.4.4)
xmlrpc (0.3.0)
yajl-ruby (1.4.1)
zlib (default: 1.0.0)